Rhodium
Alkenes
Organometallic Compounds
Cyclization
Alkynes
Amination
Catalysis
The interaction of rhodium(II) carboxylates with enzymes. (1/243)
The effect of rhodium(II) acetate, propionate, and methoxyacetate on the activity of 17 enzymes was evaluated. The enzymes were preincubated with the rhodium(II) complexes in order to detect irreversible inhibition. All enzymes that have essential sulfhydryl groups in or near their active site were found to be irreversibly inhibited. Those enzymes without essential sulfhydryl groups were not affected. In each case, the rate of inactivation closely paralleled the observed toxicity and antitumor activity of rhodium(II) carboxylates; that is, rhodium(II) propionate greater than rhodium(II) acetate greater than rhodium(II) methoxyacetate. In addition, those enzymes that have been demonstrated to be most sensitive to established sulfhydryl inhibitors, such as glyceraldehyde-3-phosphate dehydrogenase, were also most sensitive to rhodium(II) carboxylate inactivation. Proton nuclear magnetic resonance measurements made during the titration of rhodium(II) acetate with cysteine showed that breakdown of the carboxylate cage occurred as a result of reaction with this sulfhydryl-containing amino acid. (+info)Long-range oxidative damage to DNA: effects of distance and sequence. (2/243)
INTRODUCTION: Oxidative damage to DNA in vivo can lead to mutations and cancer. DNA damage and repair studies have not yet revealed whether permanent oxidative lesions are generated by charges migrating over long distances. Both photoexcited *Rh(III) and ground-state Ru(III) intercalators were previously shown to oxidize guanine bases from a remote site in oligonucleotide duplexes by DNA-mediated electron transfer. Here we examine much longer charge-transport distances and explore the sensitivity of the reaction to intervening sequences. RESULTS: Oxidative damage was examined in a series of DNA duplexes containing a pendant intercalating photooxidant. These studies revealed a shallow dependence on distance and no dependence on the phasing orientation of the oxidant relative to the site of damage, 5'-GG-3'. The intervening DNA sequence has a significant effect on the yield of guanine oxidation, however. Oxidation through multiple 5'-TA-3' steps is substantially diminished compared to through other base steps. We observed intraduplex guanine oxidation by tethered *Rh(III) and Ru(III) over a distance of 200 A. The distribution of oxidized guanine varied as a function of temperature between 5 and 35 degrees C, with an increase in the proportion of long-range damage (> 100 A) occurring at higher temperatures. CONCLUSIONS: Guanines are oxidized as a result of DNA-mediated charge transport over significant distances (e.g. 200 A). Although long-range charge transfer is dependent on distance, it appears to be modulated by intervening sequence and sequence-dependent dynamics. These discoveries hold important implications with respect to DNA damage in vivo. (+info)The effect of the antiscatter grid on full-field digital mammography phantom images. (3/243)
Computer Analysis of Mammography Phantom Images (CAMPI) is a method for making quantitative measurements of image quality. This article reports on a recent application of this method to a prototype full-field digital mammography (FFDM) machine. Images of a modified ACR phantom were acquired on the General Electric Diagnostic Molybdenum Rhodium (GE-DMR) FFDM machine at a number of x-ray techniques, both with and without the scatter reduction grid. The techniques were chosen so that one had sets of grid and non-grid images with matched doses (200 mrads) and matched gray-scale values (1500). A third set was acquired at constant 26 kVp and varying mAs for both grid conditions. Analyses of the images yielded signal-to-noise-ratio (SNR), contrast and noise corresponding to each target object, and a non-uniformity measure. The results showed that under conditions of equal gray-scale value the grid images were markedly superior, albeit at higher doses than the non-grid images. Under constant dose conditions, the non-grid images were slightly superior in SNR (7%) but markedly less uniform (60%). Overall, the grid images had substantially greater contrast and superior image uniformity. These conclusions applied to the whole kVp range studied for the Mo-Mo target filter combination and 4 cm of breast equivalent material of average composition. These results suggest that use of the non-grid technique in digital mammography with the GE-DMR-FFDM unit, is presently not warranted. With improved uniformity correction procedure, this conclusion would change and one should be able to realize a 14% reduction in patient dose at the same SNR by using a non-grid technique. (+info)Ca(2+)- and metabolism-related changes of mitochondrial potential in voltage-clamped CA1 pyramidal neurons in situ. (4/243)
In hippocampal slices from rats, dialysis with rhodamine-123 (Rh-123) and/or fura-2 via the patch electrode allowed monitoring of mitochondrial potential (DeltaPsi) changes and intracellular Ca(2+) ([Ca(2+)](i)) of CA1 pyramidal neurons. Plasmalemmal depolarization to 0 mV caused a mean [Ca(2+)](i) rise of 300 nM and increased Rh-123 fluorescence signal (RFS) by +info)Robust charge transport in DNA double crossover assemblies. (5/243)
BACKGROUND: Multiple-stranded DNA assemblies, encoded by sequence, have been constructed in an effort to self-assemble nanodevices of defined molecular architecture. Double-helical DNA has been probed also as a molecular medium for charge transport. Conductivity studies suggest that DNA displays semiconductor properties, whereas biochemical studies have shown that oxidative damage to B-DNA at the 5'-G of a 5'-GG-3' doublet can occur by charge transport through DNA up to 20 nm from a photo-excited metallointercalator. The possible application of DNA assemblies, in particular double crossover (DX) molecules, in electrical nanodevices prompted the design of a DNA DX assembly with oxidatively sensitive guanine moieties and a tethered rhodium photo-oxidant strategically placed to probe charge transport. RESULTS: DX assemblies support long-range charge transport selectively down the base stack bearing the intercalated photo-oxidant. Despite tight packing, no electron transfer (ET) crossover to the adjacent base stack is observed. Moreover, the base stack of a DX assembly is well-coupled and less susceptible than duplex DNA to stacking perturbations. Introducing a double mismatch along the path for charge transport entirely disrupts long-range ET in duplex DNA, but only marginally decreases it in the analogous stack within DX molecules. CONCLUSIONS: The path for charge transport in a DX DNA assembly is determined directly by base stacking. As a result, the two closely packed stacks within this assembly are electronically insulated from one another. Therefore, DX DNA assemblies may serve as robust, insulated conduits for charge transport in nanoscale devices. (+info)Induction of chromosomal aberrations by the rhodium(III) complex cis-[Rh(biq)(2)Cl(2)]Cl in cultured human lymphocytes. (6/243)
The genotoxicity of the rhodium(III) complex cis-[Rh(biq)(2)Cl(2)]Cl (complex R) in cultured human lymphocytes was studied using the chromosome aberrations (CAs) assay. Lymphocyte cultures were initiated from two adult healthy non-smoking male volunteers and were exposed to the complex for a duration of 3 or 20 h prior to cell collection. The reduction in mitotic indices (MI) and the induction of CAs represented the toxic and clastogenic effects of the different treatments, respectively. Complex R proved to be an intermediate toxic clastogen with a MI(50) of 1.0 microg/ml and a minimum positive dose (MPD) of 0.1 microg/ml. Like bleomycin, complex R exerted its clastogenic effects without the need for metabolic activation and induced CAs of all types in lymphocytes treated in the G(2) and late S phases and, therefore, can be considered a radiomimetic. In addition, it induced more total CAs of chromatid-type than of chromosome-type. The reduction in the frequencies of CAs following the 20 h treatment as compared with those induced following the 3 h treatments indicated that human lymphocytes in the presence of complex R can partially tolerate the lesions involved in CA production. Based on the biological effects of complex R and the similarities between its functional group and that of bleomycin, possible mechanisms for complex R genotoxicity are discussed. (+info)Effects of cis-Dichlorudiammineplatinum (II) and related transition metal complexes on Escherichia Coli. (7/243)
A number of transition metal complexes, including the cis and trans isomers of dichlorodiammineplatinum (II), six complexes of rhodium (I), two of iridium (I), and one of ruthenium (II) have been tested for their ability to induce lambda prophage, to produce filamentous growth of Escherichia coli, and to be selectively toxic for strains with defects in the deoxyribonucleic acid repair system. Dichlorotetrakis(dimethylsulfoxide)ruthenium II [RuCl(2) (DMSO)(4)] was strictly similar to cis-dichlorodiammineplatinum II [cis PtCl(2) (NH(3))(2)] in the test for lambda induction, filamentous growth production, and selective toxicity for a recA(-) strain. [Rh COD 1,10-phenanthroline](+) Cl(-), though more toxic for recA(-) than for rec(+)E. coli, was scarcely effective in the test for filamentous growth and did not induce prophage. None of the other tested compounds showed any similarity with cis-PtCl(2)(NH(3))(2). Due to the interesting results obtained with cis-PtCl(2)(NH(3))(2) as an antitumor agent, it seems reasonable to propose RuCl(2)(DMSO)(4) as a potential antitumor substance. (+info)Charge transport through DNA four-way junctions. (8/243)
Long range oxidative damage as a result of charge transport is shown to occur through single crossover junctions assembled from four semi-complementary strands of DNA. When a rhodium complex is tethered to one of the arms of the four-way junction assembly, thereby restricting its intercalation into the pi-stack, photo-induced oxidative damage occurs to varying degrees at all guanine doublets in the assembly, though direct strand scission only occurs at the predicted site of intercalation. In studies where the Mg(2+) concentration was varied, so as to perturb base stacking at the junction, charge transport was found to be enhanced but not to be strongly localized to the arms that preferentially stack on each other. These data suggest that the conformations of four-way junctions can be relatively mobile. Certainly, in four-way junctions charge transport is less discriminate than in the more rigidly stacked DNA double crossover assemblies. (+info)Rhodium is not commonly used in the medical field.
Rhodium is a chemical element with the symbol Rh and atomic number 45. It is a rare, silvery-white metal that is highly resistant to corrosion and oxidation. In the medical field, rhodium is not commonly used for therapeutic purposes. However, it has been studied for its potential use in cancer treatment. Some research has suggested that rhodium compounds may have anti-cancer properties and may be effective in treating certain types of cancer, such as ovarian cancer. However, more research is needed to fully understand the potential therapeutic applications of rhodium in medicine.
Alkenes are a type of unsaturated hydrocarbon that contain at least one carbon-carbon double bond and are commonly used in the production of medical-grade plastics and resins.
In the medical field, alkenes are a type of organic compound that contain at least one carbon-carbon double bond. They are unsaturated hydrocarbons, which means they have fewer hydrogen atoms than the maximum possible number for their molecular formula. Alkenes are commonly used in the production of various medical products, including drugs, plastics, and synthetic rubber. They are also used as solvents in some medical procedures and as components in medical devices. One example of an alkene used in medicine is propylene glycol, which is a common ingredient in many medications and medical devices. It is used as a solvent, a preservative, and a stabilizer. Another example is ethylene oxide, which is used as a sterilizing agent for medical equipment and as a precursor for the production of various medical products. Overall, alkenes play an important role in the medical field and are used in a variety of applications to improve patient care and medical technology.
Organometallic compounds are chemical compounds that contain a carbon-metal bond, and they have potential applications in the medical field for the development of new drugs and therapies.
In the medical field, organometallic compounds are compounds that contain a metal atom bonded to a carbon atom of an organic molecule. These compounds have a wide range of applications in medicine, including as drugs, diagnostic agents, and catalysts for various chemical reactions. One example of an organometallic compound used in medicine is cisplatin, which is a chemotherapy drug used to treat various types of cancer. Cisplatin contains a platinum atom bonded to two carbon atoms from organic molecules, and its mechanism of action involves binding to DNA and inhibiting its replication. Another example is ferrocene, which is an organometallic compound containing a ferrocene moiety. Ferrocene has been studied for its potential as a treatment for various diseases, including cancer and Alzheimer's disease, due to its ability to modulate cellular signaling pathways. Overall, organometallic compounds have a significant impact on the medical field, and ongoing research is exploring their potential for new therapeutic applications.
Cyclization in the medical field refers to the formation of a ring structure in a molecule through the joining of two or more atoms or groups.
In the medical field, cyclization refers to a chemical reaction in which a molecule undergoes a rearrangement to form a ring structure. This process can occur naturally in the body as part of metabolic pathways, or it can be induced artificially in the laboratory to synthesize new compounds with specific properties. Cyclization reactions are important in the synthesis of many drugs and other bioactive molecules, as they can be used to create molecules with specific shapes and chemical properties that are necessary for their biological activity. For example, the synthesis of many antibiotics involves cyclization reactions to create the ring structures that are essential for their activity against bacteria. In addition to their use in drug synthesis, cyclization reactions are also important in the study of biological molecules such as proteins and nucleic acids. Cyclization can occur naturally in these molecules as part of their structure, and understanding the mechanisms of cyclization can provide insights into the function and regulation of these molecules.
Alkynes are a type of unsaturated hydrocarbon with at least one triple bond between two carbon atoms, which can be used in the synthesis of various medicinal compounds.
In the medical field, alkynes are a type of organic compound that contain at least one carbon-carbon triple bond. They are unsaturated hydrocarbons and are classified as a subclass of the larger group of unsaturated hydrocarbons called alkenes. Alkynes are important in medicine because they can be used as building blocks for the synthesis of a wide range of organic compounds, including drugs, dyes, and other useful chemicals. They can also be used as intermediates in the synthesis of other organic compounds, such as alcohols, aldehydes, and ketones. In addition to their use in organic synthesis, alkynes have also been studied for their potential therapeutic applications. For example, some alkynes have been shown to have anti-inflammatory and anti-cancer properties, and are being investigated as potential treatments for a variety of diseases.
Amination in the medical field refers to the process of adding an amino group to a molecule, often used in the synthesis of drugs and other bioactive compounds.
In the medical field, "amination" typically refers to the process of administering a medication or treatment that contains an amine, which is a type of organic compound containing a nitrogen atom bonded to two hydrogen atoms. For example, amine medications such as dopamine, norepinephrine, and epinephrine are commonly used in the treatment of various medical conditions, including hypertension, heart failure, and shock. These medications work by stimulating the release of certain hormones and neurotransmitters in the body, which can help to regulate blood pressure, heart rate, and other vital functions. Amination may also refer to the process of adding an amine group to a molecule, which can alter its chemical properties and potentially make it more effective as a medication or therapeutic agent. This process is often used in the development of new drugs and treatments.
Catalysis in the medical field refers to the acceleration of a chemical reaction by a catalyst, which increases the rate of a desired reaction without being consumed in the process.
In the medical field, catalysis refers to the acceleration of a chemical reaction by a catalyst. A catalyst is a substance that increases the rate of a chemical reaction without being consumed or altered in the process. Catalysts are commonly used in medical research and drug development to speed up the synthesis of compounds or to optimize the efficiency of chemical reactions. For example, enzymes are biological catalysts that play a crucial role in many metabolic processes in the body. In medical research, enzymes are often used as catalysts to speed up the synthesis of drugs or to optimize the efficiency of chemical reactions involved in drug metabolism. Catalysis is also used in medical imaging techniques, such as magnetic resonance imaging (MRI), where contrast agents are used to enhance the visibility of certain tissues or organs. These contrast agents are often synthesized using catalytic reactions to increase their efficiency and effectiveness. Overall, catalysis plays a critical role in many areas of medical research and drug development, helping to accelerate the synthesis of compounds and optimize the efficiency of chemical reactions.
Rhodium
... (III) chloride, rhodium trifluoride, rhodium pentafluoride and rhodium hexafluoride are examples. The lower oxidation ... Look up rhodium in Wiktionary, the free dictionary. Wikimedia Commons has media related to Rhodium. Rhodium at The Periodic ... A 78 g sample of rhodium Cut-away of a metal-core catalytic converter Rhodium-plated white gold wedding ring Rhodium foil and ... "The Rhodium Market and Rhodium Price". Roth, James F. (1975). "Rhodium Catalysed Carbonylation of Methanol" (PDF). Platinum ...
Rhodium acetylacetonate
... is the coordination complex with the formula Rh(C5H7O2)3, which is sometimes known as Rh(acac)3. The ... Dicarbonyl(acetylacetonato)rhodium(I), Rh(C5H7O2)(CO)2 Iridium acetylacetonate, Ir(C5H7O2)3 James E. Collins, Michael P. ... rhodium(II)" Organometallics 1995, pp 1232-1238. doi:10.1021/om00003a025 Drake, A. F.; Gould, J. M.; Mason, S. F.; Rosini, C.; ... Rhodium(III) compounds, Acetylacetonate complexes, All stub articles, Organic compound stubs). ...
Rhodium pentafluoride
... is an inorganic compound with the formula Rh4F20. It is a red solid. It is prepared by fluorination of ... In the case of rhodium pentafluoride, these distances average 1.999(4) and 1.808(8) Å. The Rh-F-Rh angles average 135°, which ... Holloway, J. H.; Rao, P. R.; Bartlett, Neil (1965). "Quinquevalent rhodium compounds: RhF5 and CsRhF6". Chemical Communications ... "Crystal Structure of Rhodium Pentafluoride". Inorganic Chemistry. 12 (11): 2640-p2644. doi:10.1021/ic50129a029.{{cite journal ...
Lignum rhodium
... is a common name for several plants and may refer to: Amyris balsamifera Convolvulus floridus Convolvulus ...
Rhodium Nights
"Rhodium Nights" at IMDb Law & Order: SVU - Episode Guide - Rhodium Nights (Articles with short description, Short description ... "Rhodium Nights" was the most watched program on NBC that night, beating both the season finale episode and an encore episode of ... "Rhodium Nights" was written by executive producer/show runner Warren Leight with Julie Martin and directed by Norberto Barba. ... "Rhodium Nights" is the thirteenth season finale of the police procedural television series Law & Order: Special Victims Unit ...
Rhodium hexafluoride
... , also rhodium(VI) fluoride, (RhF6) is the inorganic compound of rhodium and fluorine. A black volatile ... Rhodium hexafluoride is prepared by reaction of rhodium metal with an excess of elemental fluorine: Rh + 3 F2 → RhF6 The RhF6 ... 63, Rhodium, Part B1, pp. 266-268. Rhodium hexafluoride at webelements.com. (CS1 uses Chinese-language script (zh), CS1 Chinese ... Rhodium compounds, Hexafluorides, Octahedral compounds, Platinum group halides). ...
Cyclamen rhodium
... subsp. rhodium is white or pale pink with a pink nose and grows in shaded woodland and shrubland on the ... Cyclamen rhodium subsp. vividum J. Compton & Culham is deep carmine-magenta and grows in sunny areas on the southeastern coast ... Cyclamen rhodium subsp. peloponnesiacum J. Compton & Culham is pink with a deep carmine-pink mouth and grows in shaded woodland ... Cyclamen rhodium (also called Cyclamen peloponnesiacum; once included in Cyclamen repandum) is a species of flowering plant in ...
Rhodium trifluoride
... is the inorganic compound with the formula RhF3. It is a red-brown, diamagnetic solid. The compound is ... 9H2O can be prepared by adding hydrofluoric acid to aqueous rhodium(III) solutions. According to X-ray crystallography, the ... prepared by fluorination of rhodium trichloride: 2 RhCl3 + 3 F2 → 2 RhF3 + 3 Cl2 It can also be obtained by direct combination ...
Rhodium oxide
... can refer to: Rhodium(III) oxide, Rh2O3 Rhodium(IV) oxide, RhO2 This set index article lists chemical compounds ...
Rhodium(II) acetate
... is usually prepared by the heating of hydrated rhodium(III) chloride in acetic acid (CH3COOH): Rhodium(II) ... Rh2(OAc)4 + 4 HO2CR → Rh2(O2CR)4 + 4 HOAc The structure of rhodium(II) acetate features a pair of rhodium atoms, each with ... Rhodium(II) acetate is the coordination compound with the formula Rh2(AcO)4, where AcO− is the acetate ion (CH 3CO− 2). This ... Rhodium(II) acetate dimer, compared to copper(II) acetate, is more reactive and useful in differentiating ribonucleosides and ...
Rhodium(III) oxide
Rhodium Rhodium(IV) oxide Rhodium-platinum oxide Coey, J. M. D. (1970-11-01). "The crystal structure of Rh2O3". Acta ... Rhodium(III) oxide (or Rhodium sesquioxide) is the inorganic compound with the formula Rh2O3. It is a gray solid that is ... Adding sodium hydroxide results in hydrated rhodium oxide, which upon heating converts to Rh2O3. Rhodium oxide thin films can ... Rhodium oxide films behave as a fast two-color electrochromic system: Reversible yellow ↔ dark green or yellow ↔ brown-purple ...
Rhodium(III) bromide
... is a starting material for the synthesis of other rhodium halides. For example, it reacts with bromine ... Like most other rhodium trihalides, anhydrous RhBr3 is insoluble in water. The dihydrate RhBr3·2H2O forms when rhodium metal ... Rhodium bromides are similar to the chlorides, but have attracted little academic or commercial attention. Rhodium(III) bromide ... Rhodium(III) bromide refers to inorganic compounds of the formula RhBr3(H2O)n where n = 0 or approximately three. Both forms ...
Rhodium(III) sulfate
This method used rhodium metal and sulfuric acid to make the rhodium(III) sulfate. The two compounds were heated together at ... The first attempts to produce rhodium(III) sulfate was in 1929 with the reaction of rhodium(III) hydroxide and sulfuric acid . ... Rhodium(III) sulfate refers to inorganic compounds of the formula Rh2(SO4)3. It is a red crystalline solid. ... Schwarzer, Stefan; Betke, Annika; Logemann, Christian; Wickleder, Mathias S. (18 January 2017). "Oxidizing Rhodium with ...
Rhodium(III) perchlorate
3 HCl The reaction of rhodium(III) hydroxide with concentrated perchloric acid also produce rhodium(III) perchlorate. Rh(OH)3 ... Rhodium(III) perchlorate refers to the inorganic compound with the formula Rh(H2O)6(ClO4)3. It is a hygroscopic yellow solid. ... The preparation of rhodium(III) perchlorate hexahydrate. Journal of Inorganic and Nuclear Chemistry, 1957. Vol.3, Iss.6, pp 365 ... The compound is prepared by treating hydrated rhodium(III) chloride and perchloric acid at elevated temperatures: [Rh(H2O)6]Cl3 ...
Rhodium(IV) oxide
... (or rhodium dioxide) is the chemical compound with the formula RhO2. RhO2 is highly insoluble even in hot ...
Uranium rhodium germanium
... (URhGe) is the first discovered metal that becomes superconducting in the presence of an extremely ... Intermetallics, Superconductors, Correlated electrons, Alloys, Uranium compounds, Germanium compounds, Rhodium compounds). ... uranium rhodium germanium actually regains superconducting abilities at about 8 teslas. URhGe's critical temperature (Tc) is ...
Rhodium(III) nitrate
... is used as a precursor to synthesize rhodium. "Rhodium nitrate". PubChem. Retrieved 12 March 2021. " ... Rhodium(III) nitrate is a inorganic compound, a salt of rhodium and nitric acid with the formula Rh(NO3)3. This anhydrous ... Rhodium nitrates are of interest because nuclear wastes, which contain rhodium, are recycled by dissolution in nitric acid. ... they contain various hexacoordinated rhodium(III) aqua and nitrate complexes. A number of other rhodium nitrates have been ...
Rhodium(III) iodide
... is only known in the anhydrous form. Unlike the other rhodium(III) halides, it does not form hydrates. The ... Rhodium(III) iodide is an inorganic compound with the formula RhI3. It is a black solid. Rhodium(III) iodide can be synthesised ... The structure consists of cubic close-packed iodide ions and rhodium ions filling a third of the octahedral interstices, ... by the reaction of aqueous potassium iodide with rhodium(III) bromide. RhBr3 + 3KI → RhI3 + 3KBr RhI3 adopts same crystal ...
Rhodium(III) hydroxide
... is a chemical compound with the formula Rh(OH)3. Various compounds of rhodium(III) with hydroxide ... Some double hydroxides called rhodium(III) hydrogarnets are known to exist. They include BaNaRh(OH)6, Ca3Rh2(OH)12, Sr3Rh2(OH) ... "Alkaline-Earth Rhodium Hydroxides: Synthesis, Structures, and Thermal Decomposition to Complex Oxides". Inorganic Chemistry. 57 ... Rhodium(III) compounds, Hydroxides, All stub articles, Inorganic compound stubs). ...
Isotopes of rhodium
John W. Arblaster (April 2011). "The Discoverers of the Rhodium Isotopes. The thirty-eight known rhodium isotopes found between ... Isotopes of rhodium, Rhodium, Lists of isotopes by element). ... Naturally occurring rhodium (45Rh) is composed of only one ... "Standard Atomic Weights: Rhodium". CIAAW. 2017. Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04 ...
Rhodium-platinum oxide
Rhodium-catalyzed hydrogenation Rhodium(III) oxide Wilkinson's catalyst Platinum black Platinum on carbon Palladium on carbon ... Rhodium-platinum oxide (Rh-Pt oxide), or Nishimura's catalyst, is an inorganic compound used as a hydrogenation catalyst. Rh-Pt ... V. Rhodium-Platinum Oxide as a Catalyst for the Hydrogenation of Organic Compounds". Bulletin of the Chemical Society of Japan ... Rhodium-Platinum Oxide as a Catalyst for the Hydrogenation of the Aromatic Nucleus". Bulletin of the Chemical Society of Japan ...
Rhodium(IV) fluoride
... is a chemical compound of rhodium and fluorine. It is formed when rhodium(III) bromide reacts with bromine ...
Rhodium(III) sulfide
... is the inorganic compound with the formula Rh2S3. It is an insoluble black solid, prepared by the heating ... Parthé, Erwin; Hohnke, Dieter K.; Hulliger, Fritz (1967). "New Structure Type with Octahedron Pairs for Rhodium(III) Sulfide, ... Rhodium(III) Selenide, and Iridium(III) Sulfide". Acta Crystallographica. 23: 832-40. doi:10.1107/S0365110X67003767. (Articles ... a mixture of elemental rhodium and sulfur. Crystals can be grown by chemical vapor transport using bromine as the transporting ...
Rhodium carbonyl chloride
Das Rhodium im System der Metallcarbonyle (Metal carbonyls. XLV. Rhodium in the system of metal carbonyls)" Zeitschrift für ... rhodium carbonyl chloride reacts to give dicarbonyl(acetylacetonato)rhodium(I). The dimer reacts with a variety of Lewis bases ... Rhodium carbonyl chloride is an organorhodium compound with the formula Rh2Cl2(CO)4. It is a red-brown volatile solid that is ... It is a precursor to other rhodium carbonyl complexes, some of which are useful in homogeneous catalysis. The molecule consists ...
Chlorobis(cyclooctene)rhodium dimer
... is an organorhodium compound with the formula Rh2Cl2(C8H14)4, where C8H14 is cis- ... C-H activation is often catalyzed by chlorobis(cyclooctene)rhodium dimer as demonstrated in the synthesis of a strained ... Van der Ent, A.; Onderdelinden, A. L. "Chlorobis(cyclooctene)rhodium(I) and di-μ-chlorobis[bis(cryclooctene)iridium] (I) ... The complex is prepared by treating an alcohol solution of hydrated rhodium trichloride with cyclooctene at room temperature. ...
Dicarbonyl(acetylacetonato)rhodium(I)
... is an organorhodium compound with the formula Rh(O2C5H7)(CO)2. The compound consists of ... It is prepared by treating rhodium carbonyl chloride with sodium acetylacetonate in the presence of base: [(CO)2RhCl]2 + 2 ... Bonati, F.; Wilkinson, G. (1964). "Dicarbonyl-β-diketonato- and Related Complexes of Rhodium(I)". J. Chem. Soc.: 3156-3160. doi ... Zacuto, Michael J.; Leighton, James L. (2002). "Dicarbonyl(acetylacetonato) Rhodium(I)". Encyclopedia of Reagents for Organic ...
Pentamethylcyclopentadienyl rhodium dichloride dimer
This rhodium(III) dimer can be reduced with zinc in the presence of CO to produce the rhodium(I) complex [Cp*Rh(CO)2]. ... Pentamethylcyclopentadienyl rhodium dichloride dimer is an organometallic compound with the formula [(C5(CH3)5RhCl2)]2, ... Kang, Jung W.; Mosley, K.; Maitlis, Peter M. (1968). "Mechanisms of Reactions of Dewar Hexamethylbenzene with Rhodium and ... Herrmann, Wolfgang A.; Zybill, Christian (1996). "Bis{(μ-chloro)[chloro(η-pentamethylcyclopentadienyl)rhodium]} - {Rh(μ-Cl)Cl[η ...
Chlorobis(ethylene)rhodium dimer
... is an organorhodium compound with the formula Rh2Cl2(C2H4)4. It is a red-orange solid that is ... Carbonylation affords rhodium carbonyl chloride. Treatment with acetylacetone and aqueous KOH gives Rh(acac)(C2H4)2. Hayashi, ... The complex is prepared by treating an aqueous methanolic solution of hydrated rhodium trichloride with ethylene at room ... 5052-5058.doi:10.1021/ja012711i Neely, Jamie M. (2014). "chlorobis(ethylene)rhodium(I) dimer". E-EROS Encyclopedia of Reagents ...
Cyclooctadiene rhodium chloride dimer
... is the organorhodium compound with the formula Rh2Cl2(C8H12)2, commonly abbreviated [RhCl ... A related but still more reactive complex is chlorobis(cyclooctene)rhodium dimer. The dimer reacts with a variety of Lewis ... "Di-μ-chloro-bis[(cis,cis-η4-1,5-cyclooctadiene)rhodium(I)]: a redetermination" De Ridder, Kirk J. A. Acta Crystallographica, ... The synthesis of [RhCl(COD)]2 involves heating a solution of hydrated rhodium trichloride with 1,5-cyclooctadiene in aqueous ...
Hydridotetrakis(triphenylphosphine)rhodium(I)
... is the coordination complex with the formula HRh[P(C6H5)3]4. It consists of a Rh( ... In the presence of base, H2, and additional triphenylphosphine, Wilkinson's catalyst (chloridotris(triphenylphosphane)rhodium(I ... Eduardo Peña-Cabrera "Hydridotetrakis(triphenylphosphine)rhodium" Encyclopedia of Reagents for Organic Synthesis, 2001, John ... Rhodium(I) compounds, Catalysts, Homogeneous catalysis, Triphenylphosphine complexes, Coordination complexes, Hydrogenation ...
Rhodium - Wikipedia
Rhodium(III) chloride, rhodium trifluoride, rhodium pentafluoride and rhodium hexafluoride are examples. The lower oxidation ... Look up rhodium in Wiktionary, the free dictionary. Wikimedia Commons has media related to Rhodium. Rhodium at The Periodic ... A 78 g sample of rhodium Cut-away of a metal-core catalytic converter Rhodium-plated white gold wedding ring Rhodium foil and ... "The Rhodium Market and Rhodium Price". Roth, James F. (1975). "Rhodium Catalysed Carbonylation of Methanol" (PDF). Platinum ...
Creativity pendant, White, Rhodium plated | Swarovski
Rhodium-plated metal adds a modern touch. Wear with a longer pendant for an on-trend multi-length layered look. The pendant ... Creativity pendant, White, Rhodium plated ... Creativity pendant, White, Rhodium plated Home Jewelry Necklaces and pendants ... Home Jewelry Necklaces and pendants Pendants Creativity pendant, White, Rhodium plated ... Rhodium-plated metal adds a modern touch. Wear with a longer pendant for an on-trend multi-length layered look. The pendant ...
Dicarbonyl(η(5)-pentamethylcyclopentadienyl)rhodium
WebElements Periodic Table » Rhodium » tetrarhodium dodecacarbonyl
Sterling Silver Rhodium Plated Serpentine Chains for Sale
Dreamland Jewelry offers top quality Rhodium Plated Silver Chains. Shop online today. ... Sterling Silver Rhodium Plated Serpentine Chains for Sale. ... Rhodium Sterling Silver Twisted Serpentine Chain 1.0MM. Sale ... Sterling Silver Rhodium Plated Serpentine Chains. Filter Showing 1 - 1 of 1 product 96 per page. Display 24 per page 48 per ...
Rhodium Plated Ring | PriceScope
Do all Jewelers do the same job on Rhodium plating Rings? Im trying to find the best Jeweler, so Im not sure if going with ... Also, by Rhodium plating my ring, I know that it will eventually rub off, but will it look like chips of yellow and silver or ... Do all Jewelers do the same job on Rhodium plating Rings?. Im trying to find the best Jeweler, so Im not sure if going with ... So long as the rhodium is clean and fresh it is a pretty simple process. Just check it for blemishes when you pick it up. ...
Haematite & Rhodium Plated Crest Multicolored | Church's
Haematite & Rhodium Plated Crest Multicolored ELG008_9KZ_F0DZO : buy online on the official store Churchs. ... Rhodium plated base metal with haematite • Inlay with embossed Churchs crest • Whale-back fastening • Includes presentation ... this timeless style boasts a Churchs crest embossed into a high-shine rhodium plated inlay. Complement your professional ...
Sample of the element Rhodium in the Periodic Table
Kenneth jay lane rhodium silver resin beads circle fishhook earrings + FREE SHIPPING | Zappos.com
Free shipping BOTH ways on kenneth jay lane rhodium silver resin beads circle fishhook earrings from our vast selection of ... Rhodium Neutral Mix. Price. $119.00MSRP: $198.00. Rating. Kendra Scott - Blair Jewel Open Frame Earrings. Color Rhodium White ... Rhodium Ivory Mother-of-Pearl. Price. $80.00. Rating. COACH - Signature Link Drop Earrings. Color Black/Rhodium. Low Stock.. $ ... Crystal/Rhodium. Price. $48.00. Rating. Kendra Scott - Tessa Earring. Color Rhodium/Iridescent Drusy. Low Stock.. $70.00. . 4.6 ...
Engagement Ring Update by Rhodium Plating
Rhodium plating a dated yellow gold engagement ring gives your wedding set new life for a fraction of a new mounting! ... When we rhodium plate a yellow gold piece, we first polish it, then we electroplate it (or "dip it") with liquid rhodium. ... While rhodium is more expensive than platinum, the process of electroplating your piece with rhodium in a layer only 1 micron ... Colored gold, Diamond cut, engagement ring rohdium, EngagementRing, Jewelry, rhodium plate yellow gold engagement ring, rhodium ...
Olivine Amber Resin Beaded Bracelet w/ Rhodium Traditional Bracelet
High Polish Medium Hoop Rhodium Plated Earrings | Ylang 23
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rhodium | Taber's Medical Dictionary
rhodium answers are found in the Tabers Medical Dictionary powered by Unbound Medicine. Available for iPhone, iPad, Android, ... "Rhodium." Tabers Medical Dictionary, 24th ed., F.A. Davis Company, 2021. Tabers Online, www.tabers.com/tabersonline/view/ ... Rhodium [Internet]. In: Venes DD, editors. Tabers Medical Dictionary. F.A. Davis Company; 2021. [cited 2023 September 26]. ... www.tabers.com/tabersonline/view/Tabers-Dictionary/736719/all/rhodium PB - F.A. Davis Company ET - 24 DB - Tabers Online DP - ...
White Rainbow Moonstone Rhodium Over Sterling Silver Bracelet - JSM090A | JTV.com
![3-Acyloxy-1,4-enyne: A new five-carbon synthon for rhodium-catalyzed [5 + 2] cycloadditions](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAMAAAAoLQ9TAAAAb1BMVEUnJir///8ZFxoZFxwnJikoJiooJikZFxsWFBcPDRASEBMkIiccGh0RDxIPDRI1MzhGREe1s7VUUlUuLC9dXF+koqWWlZaNjI1+fH5BP0KenJ/d3N8IBgm7urxhX2Lo5uiIhojLyctwbnKsqqzw7/AgpnjjAAAAv0lEQVQYlR2OgY6DMAxD04S2SQprKQwOxm1wu///xqWzFCl6si1DBu89QNfZhRAypIiIomHqRTjGBBCRh/m+rPf1Z1MyY2TeH4U1La5KAyirmw9E1d9nA92wuVfPVqSlaDQgp7s4EpFlqTluoxsViW9N0ZvDwIC8/TVNLbJbBDnXxV3VN1Ddw0r5mN37IA8BdXRFejye1mWgQw3XFUSG878qhTZd+/O9rvuSBSNAIowsaSuTKCIlyNDkU0rfJ38Ap50K6+l3zagAAAAASUVORK5CYII=)
3-Acyloxy-1,4-enyne: A new five-carbon synthon for rhodium-catalyzed [5 + 2] cycloadditions
... * Casi M. Schienebeck , Xiaoxun Li ... Cationic rhodium catalyst ([Rh(COD)2]BF4) afforded the highest isolated yield (85 %). This condition proved to be sufficient ... Modern Rhodium-Catalyzed Organic Reactions, Wiley-VCH, Weinheim (2005); (h) V. Michelet, P. Y. Toullec, J. P. Genet. Angew. ... Using a rhodium complex with just three free coordination sites, the alkyne may compete effectively with ACE for coordination ...
Shopzilla - Disney jewelry disney sterling silver, Rhodium Necklaces & Pendants
Buy Jewelry & Watches online and read professional reviews on Disney jewelry disney sterling silver, Rhodium Necklaces & ... Kiera Rhodium Plated Sterling ... It can never go wrong with classic style, and for this, we would like to recom... It can ... Kiera Rhodium Plated Sterling ... With KIERA jewelry, its never been that easy to pull off an elegant yet bold ... With KIERA ... The disc pendant of this rhodium-plated necklace offers an engraved skull on one side an a custom name on the other.Full ...
Shaun Leane Silver Black Rhodium Rose Thorn Stud Earring
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Black Rhodium Plated Silver Nipple Ring - 84C01UK Body Jewellery Shop
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Cable Flat Rabbit Rhodium Plated Silver Chain
Pilot Vanishing Point Fountain Pen Red Rhodium on Sale
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Green Rhodium CZ Sterling Silver Ring (Size 8)
Rhodium or Silver Plating Rings
7MM Men's Wedding Band - Brush Finish with Textured Black Rhodium with - artcarvedbridal
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Letter 'W' Bead - Antique Rhodium Plate - That Bead Lady
Sold Out NO LONGER AVAILABLE...."Heart" Rhodium Magnetic Bracelet
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Adult 7' Oval Rhodium Plated Bangle Bracelet with St. Fiacre Medal Charm | The Catholic Company®
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Evidence for reversible α-hydrogen abstraction from methyl-cobalt and -rhodium complexes involving the possible formation of...
Rhodia Classic Notepad (5.75 x 5.75) - Jenni Bick Custom Journals
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BR-332 Black Rhodium Overlay Bali Bead - Bali Designs Inc
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... founder and CEO of Rhodium Scientific. "This project is a perfect fit for Rhodium Scientifics bioprospecting program and is ... Southern Research and Rhodium Scientific have partnered to send bacteria to space on a mission to find new hope for people with ... Southern Research and Rhodium Scientific send bacteria to space to explore potential cancer treatments. November 7, 2022 ... Rhodiums science team will work with astronauts aboard the International Space Station to grow the 11 strains under ...
Palladium and rhodiumPeriodic tablePlatingOsmiumOxidationBraceletDensitySterling silverCorrosionPlatinumDurableMetalPlateCrystalBlackWhiteElementMelting pointLevelSimpleIridiumIron-RhodiumCatalytic convertersNickelCrystalsCationicEarringsTrisBraceletSilveryNotepadComplexesPendant1934AtomicFinishScored coverGroupFreePaper
Palladium and rhodium2
- Diluted nitric acid dissolved all but palladium and rhodium. (wikipedia.org)
- This could be compared to today's exhaust-cleaning catalytic converters, which contain about three grams of platinum, palladium and rhodium, which are also precious metals," says Ola Wendt. (lu.se)
Periodic table2
- Rhodium belongs to group 9 of the periodic table, but exhibits an atypical ground state valence electron configuration for that group. (wikipedia.org)
- Rhodium is a member of the platinum group on the periodic table, but is even rarer and much more expensive - it is its own metal. (raymondleejewelers.net)
Plating5
- Do all Jewelers do the same job on Rhodium plating Rings? (pricescope.com)
- Also, by Rhodium plating my ring, I know that it will eventually rub off, but will it look like chips of yellow and silver or is is just a slight yellowish color? (pricescope.com)
- Dipping" your yellow gold jewelry, or rhodium plating it, is a simple and inexpensive process that will completely transform your engagement ring. (raymondleejewelers.net)
- We offer rhodium plating on rings for anywhere between $75 for thin bands to $150 for chunky, wide shanks (mo' metal, mo' money) Compare this to the cost of a brand new mounting and you have a ring that looks brand spanking new for a fraction! (raymondleejewelers.net)
- This bracelet will not tarnish over time as rhodium is incredibly resilient and its plating is intended to protect articles from corrosion, and to furnish a highly decorative finish and provide a mirror surface which is highly reflective. (acemagnetics.com)
Osmium2
- Unlike ruthenium and osmium, rhodium forms no volatile oxygen compounds. (wikipedia.org)
- 94 of the 185 drill hole samples were analyzed for iridium, osmium, rhodium, and ruthenium, and none was detected. (cdc.gov)
Oxidation2
- The common oxidation state of rhodium is +3, but oxidation states from 0 to +7 are also observed. (wikipedia.org)
- The oxidation number of rhodium in tetrarhodium dodecacarbonyl is 0 . (webelements.com)
Bracelet2
- Dark Olivine Amber Resin Beads bracelet with new rhodium beads all accented in beautiful & traditional bracelet this is Gorgeous Bracelet. (fashionjewelryforeveryone.com)
- 9x7mm Oval Rainbow Moonstone Rhodium Over Sterling Silver Bracelet. (jtv.com)
Density1
- Rhodium has both a higher melting point and lower density than platinum. (wikipedia.org)
Sterling silver2
- White gold is often plated with a thin rhodium layer to improve its appearance, while sterling silver is often rhodium-plated to resist tarnishing. (wikipedia.org)
- Nature's most seductive flower captured in a petite sterling silver and black rhodium version of the Rose Thorn stud. (shaunleane.com)
Corrosion2
- Because rhodium metal is inert against corrosion and most aggressive chemicals, and because of its rarity, rhodium is usually alloyed with platinum or palladium and applied in high-temperature and corrosion-resistive coatings. (wikipedia.org)
- for example, by the turn of the century, rhodium-containing thermocouples were used to measure temperatures up to 1800 °C. They have exceptionally good stability in the temperature range of 1300 to 1800 °C. The first major application was electroplating for decorative uses and as corrosion-resistant coating. (wikipedia.org)
Platinum3
- Rhodium is found in platinum or nickel ores with the other members of the platinum group metals. (wikipedia.org)
- The previous catalytic converters used platinum or palladium, while the three-way catalytic converter used rhodium to reduce the amount of NOx in the exhaust. (wikipedia.org)
- While rhodium is more expensive than platinum, the process of electroplating your piece with rhodium in a layer only 1 micron thick is realtively inexpensive. (raymondleejewelers.net)
Durable1
- Rhodium is a hard, silvery, durable metal that has a high reflectance. (wikipedia.org)
Metal6
- Naturally occurring rhodium is usually found as a free metal or as an alloy with similar metals and rarely as a chemical compound in minerals such as bowieite and rhodplumsite. (wikipedia.org)
- After being washed with ethanol, the rose-red precipitate was reacted with zinc, which displaced the rhodium in the ionic compound and thereby released the rhodium as free metal. (wikipedia.org)
- Rhodium metal does not normally form an oxide, even when heated. (wikipedia.org)
- Rhodium-plated metal adds a modern touch. (swarovski.com)
- Color Rhodium Filigree Metal. (zappos.com)
- Available in black, blue and red barrel colors with gold or rhodium accents, black or blue carbonesque finishes with rhodium accents, and yellow, brown, raden, chrome, white and gun metal gray finishes with rhodium accents. (altmanluggage.com)
Plate1
- When we rhodium plate a yellow gold piece, we first polish it, then we electroplate it (or "dip it") with liquid rhodium. (raymondleejewelers.net)
Crystal1
- Color Rhodium Gray Crystal. (zappos.com)
Black2
- Create a sophisticated look with this gorgeous Black Rhodium Plated 925 Silver Nipple Ring. (bodyjewelleryshop.com)
- With textured black rhodium and polished lines, this ring is a bold choice. (artcarvedbridal.com)
White1
- This Beautiful Necklace Is 0.10ctw White Diamond Rhodium And 14k Rose Gold Over Silver.This Is The Perfect Gift For A Disney Lover! (shopzilla.com)
Element1
- Rhodium is a chemical element with the symbol Rh and atomic number 45. (wikipedia.org)
Melting point1
- Oxygen is absorbed from the atmosphere only at the melting point of rhodium, but is released on solidification. (wikipedia.org)
Level1
- Rhodium detectors are used in nuclear reactors to measure the neutron flux level. (wikipedia.org)
Simple1
- So long as the rhodium is clean and fresh it is a pretty simple process. (pricescope.com)
Iridium2
Iron-Rhodium4
- This product is to be used for making thin films approaching cell size (10 micrometer diameter or less) of Iron-Rhodium, a magnetocaloric material which has potential as a switchable MRI contrast agent. (nih.gov)
- Two iron-rhodium samples of different purity (99% and 99.9%) and a lanthanum-iron-silicon sample were obtained from commercial vendors. (nih.gov)
- Temperature-dependent MRI of different iron-rhodium and lanthanum-iron-silicon samples were performed on 3 different MRI scanners at 1 Tesla (T), 4.7T, and 7T. (nih.gov)
- Sharp, first-order magnetic phase transition of each iron-rhodium sample at a physiologically relevant temperature (~37°C) but at different MRI magnetic fields (1T, 4.7T, and 7T, depending on the sample) showed clear image contrast changes in temperature-dependent MRI. (nih.gov)
Catalytic converters3
- The primary use for Rhodium is in catalytic converters for cars. (conservapedia.com)
- The element's major use (consuming about 80% of world rhodium production) is as one of the catalysts in the three-way catalytic converters in automobiles. (wikipedia.org)
- The previous catalytic converters used platinum or palladium, while the three-way catalytic converter used rhodium to reduce the amount of NOx in the exhaust. (wikipedia.org)
Nickel2
- Rhodium is found in platinum or nickel ores with the other members of the platinum group metals. (wikipedia.org)
- Encrusted with a dazzling array of clear Austrian crystals in shimmering rhodium plated nickel free base metal, and surmounted by a crown with red enamelling, the open work shield with raised and grooved features frames a majestic rampant lion studded with gorgeous sparkling clear crystal detailing. (historicroyalpalaces.com)
Crystals2
- Crafted with a rhodium plated chain, the design features vivid crystals in extraordinary cuts and sizes that work beautifully together as one. (swarovski.com)
- This elegant Swarovski Elements crystal necklace is composed from rhodium plating and clear pave crystals. (cerijewelry.com)
Cationic1
- 19. Intramolecular alkyl phosphine dehydrogenation in cationic rhodium complexes of tris(cyclopentylphosphine). (nih.gov)
Earrings2
- Rhodium over sterling silver LogoArt Phi Sigma Sigma sorority Greek letters small dangle earrings with polished finish. (jtv.com)
- Stud silver 925 rhodium plated mini earrings with clear cubic zirconia stones from the Heart4Heart collection. (follifollie.com)
Tris1
- Use of a cobalt carbonyl complex as catalyst required high pressure in an older process, which has been largely replaced by a low-pressure process based on rhodium complex catalysts, such as a tris (alkyldiarylphosphine) rhodium carbonyl hydride. (nih.gov)
Bracelet1
- Adjustable rhodium-plated sterling silver friendship bracelet with 3.4mm square beads on a box chain. (billythetree.com)
Silvery2
- Rhodium (RO-dee-em) is a hard, silvery metal. (conservapedia.com)
- Rhodium is a hard, silvery, durable metal that has a high reflectance. (wikipedia.org)
Notepad1
- It is these componants which create the very essence of the Rhodia notepad, a traditional yet contemporary object since 1934. (bloc-rhodia.com)
Complexes2
Pendant1
- Show that you care for Israel and wear this rhodium plated pendant displaying the two stripes and Star of David an image of the flag of the State of Israel. (ajudaica.com)
19341
- Rhodia has been around since the 1930s.In 1934, the company moved from Lyon to Sechilienne near Grenoble in the French Alps. (penboutique.com)
Atomic1
- Rhodium is a chemical element with the symbol Rh and atomic number 45. (wikipedia.org)
Finish1
- They are then polished and bathed (European norms and anti-allergic), and given a rhodium finish to add a strong shine. (flamencoexport.com)
Scored cover1
- People love Rhodia pads for their grids, smooth paper and unique scored cover which folds back neatly. (penboutique.com)
Group1
- Rhodium belongs to group 9 of the periodic table, but exhibits an atypical ground state valence electron configuration for that group. (wikipedia.org)
Free1
- All Rhodia paper is acid-free and ink-friendly. (penboutique.com)
Paper1
- People love Rhodia pads and notebooks for their grids, smooth paper & iconic cover. (penboutique.com)
