Vanadium Compounds: Inorganic compounds that contain vanadium as an integral part of the molecule.Vanadium: A metallic element with the atomic symbol V, atomic number 23, and atomic weight 50.94. It is used in the manufacture of vanadium steel. Prolonged exposure can lead to chronic intoxication caused by absorption usually via the lungs.Capillary Electrochromatography: A separation technique which combines LIQUID CHROMATOGRAPHY and CAPILLARY ELECTROPHORESIS.Stereoisomerism: The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)G2 Phase Cell Cycle Checkpoints: CELL CYCLE regulatory signaling systems that are triggered by DNA DAMAGE or lack of nutrients during G2 PHASE. When triggered they restrain cells transitioning from G2 phase to M PHASE.Vanadates: Oxyvanadium ions in various states of oxidation. They act primarily as ion transport inhibitors due to their inhibition of Na(+)-, K(+)-, and Ca(+)-ATPase transport systems. They also have insulin-like action, positive inotropic action on cardiac ventricular muscle, and other metabolic effects.Organometallic Compounds: A class of compounds of the type R-M, where a C atom is joined directly to any other element except H, C, N, O, F, Cl, Br, I, or At. (Grant & Hackh's Chemical Dictionary, 5th ed)Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.GuanineReview Literature as Topic: Published materials which provide an examination of recent or current literature. Review articles can cover a wide range of subject matter at various levels of completeness and comprehensiveness based on analyses of literature that may include research findings. The review may reflect the state of the art. It also includes reviews as a literary form.Genes, Synthetic: Biologically functional sequences of DNA chemically synthesized in vitro.Hepatitis B, Chronic: INFLAMMATION of the LIVER in humans caused by HEPATITIS B VIRUS lasting six months or more. It is primarily transmitted by parenteral exposure, such as transfusion of contaminated blood or blood products, but can also be transmitted via sexual or intimate personal contact.Evidence-Based Practice: A way of providing health care that is guided by a thoughtful integration of the best available scientific knowledge with clinical expertise. This approach allows the practitioner to critically assess research data, clinical guidelines, and other information resources in order to correctly identify the clinical problem, apply the most high-quality intervention, and re-evaluate the outcome for future improvement.Antiviral Agents: Agents used in the prophylaxis or therapy of VIRUS DISEASES. Some of the ways they may act include preventing viral replication by inhibiting viral DNA polymerase; binding to specific cell-surface receptors and inhibiting viral penetration or uncoating; inhibiting viral protein synthesis; or blocking late stages of virus assembly.Phosphorus Compounds: Inorganic compounds that contain phosphorus as an integral part of the molecule.Inorganic Chemicals: A broad class of substances encompassing all those that do not include carbon and its derivatives as their principal elements. However, carbides, carbonates, cyanides, cyanates, and carbon disulfide are included in this class.Nanowires: Nanometer-scale wires made of materials that conduct electricity. They can be coated with molecules such as antibodies that will bind to proteins and other substances.Materials Testing: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.Biocompatible Materials: Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.Surface Properties: Characteristics or attributes of the outer boundaries of objects, including molecules.Alkynes: Hydrocarbons with at least one triple bond in the linear portion, of the general formula Cn-H2n-2.Propanols: Isomeric forms and derivatives of PROPANOL (C3H7OH).Palladium: A chemical element having an atomic weight of 106.4, atomic number of 46, and the symbol Pd. It is a white, ductile metal resembling platinum, and following it in abundance and importance of applications. It is used in dentistry in the form of gold, silver, and copper alloys.Benzene: Toxic, volatile, flammable liquid hydrocarbon byproduct of coal distillation. It is used as an industrial solvent in paints, varnishes, lacquer thinners, gasoline, etc. Benzene causes central nervous system damage acutely and bone marrow damage chronically and is carcinogenic. It was formerly used as parasiticide.Alkadienes: Acyclic branched or unbranched hydrocarbons having two carbon-carbon double bonds.Pelger-Huet Anomaly: Autosomal dominant anomaly characterized by abnormal ovoid shape GRANULOCYTE nuclei and their clumping chromatin. Mutations in the LAMIN B receptor gene that results in reduced protein levels are associated with the disorder. Heterozygote individuals are healthy with normal granulocyte function while homozygote individuals occasionally have skeletal anomalies, developmental delay, and seizures.Hysteroscopes: Endoscopes for examining the interior of the uterus.Waxes: A plastic substance deposited by insects or obtained from plants. Waxes are esters of various fatty acids with higher, usually monohydric alcohols. The wax of pharmacy is principally yellow wax (beeswax), the material of which honeycomb is made. It consists chiefly of cerotic acid and myricin and is used in making ointments, cerates, etc. (Dorland, 27th ed)Molecular Weight: The sum of the weight of all the atoms in a molecule.Alkenes: Unsaturated hydrocarbons of the type Cn-H2n, indicated by the suffix -ene. (Grant & Hackh's Chemical Dictionary, 5th ed, p408)Polymers: Compounds formed by the joining of smaller, usually repeating, units linked by covalent bonds. These compounds often form large macromolecules (e.g., BIOPOLYMERS; PLASTICS).Cycloparaffins: Alicyclic hydrocarbons in which three or more of the carbon atoms in each molecule are united in a ring structure and each of the ring carbon atoms is joined to two hydrogen atoms or alkyl groups. The simplest members are cyclopropane (C3H6), cyclobutane (C4H8), cyclohexane (C6H12), and derivatives of these such as methylcyclohexane (C6H11CH3). (From Sax, et al., Hawley's Condensed Chemical Dictionary, 11th ed)Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Wheelchairs: Chairs mounted on wheels and designed to be propelled by the occupant.Dienestrol: A synthetic, non-steroidal estrogen structurally related to stilbestrol. It is used, usually as the cream, in the treatment of menopausal and postmenopausal symptoms.Catalysis: The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.Halogens: A family of nonmetallic, generally electronegative, elements that form group 17 (formerly group VIIa) of the periodic table.Polyphosphates: Linear polymers in which orthophosphate residues are linked with energy-rich phosphoanhydride bonds. They are found in plants, animals, and microorganisms.Models, Molecular: Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.Dinucleoside Phosphates: A group of compounds which consist of a nucleotide molecule to which an additional nucleoside is attached through the phosphate molecule(s). The nucleotide can contain any number of phosphates.Rutamycin: A macrolide antibiotic of the oligomycin group, obtained from Streptomyces rutgersensis. It is used in cytochemistry as a tool to inhibit various ATPases and to uncouple oxidative phosphorylation from electron transport and also clinically as an antifungal agent.Phosphates: Inorganic salts of phosphoric acid.Crystallography, X-Ray: The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)NorbornanesSpace-Time Clustering: A statistically significant excess of cases of a disease, occurring within a limited space-time continuum.Polypropylenes: Propylene or propene polymers. Thermoplastics that can be extruded into fibers, films or solid forms. They are used as a copolymer in plastics, especially polyethylene. The fibers are used for fabrics, filters and surgical sutures.Illusions: The misinterpretation of a real external, sensory experience.Surgical Mesh: Any woven or knit material of open texture used in surgery for the repair, reconstruction, or substitution of tissue. The mesh is usually a synthetic fabric made of various polymers. It is occasionally made of metal.TextilesTetraoxanes: Compounds with two peroxide groups, that is, two pairs of adjacent OXYGEN atoms. They may have activity against PLASMODIUM similar to the ARTEMISININS.Iron: A metallic element with atomic symbol Fe, atomic number 26, and atomic weight 55.85. It is an essential constituent of HEMOGLOBINS; CYTOCHROMES; and IRON-BINDING PROTEINS. It plays a role in cellular redox reactions and in the transport of OXYGEN.Ferrous Compounds: Inorganic or organic compounds that contain divalent iron.Ferric Compounds: Inorganic or organic compounds containing trivalent iron.Butyrophenones: Compounds containing phenyl-1-butanone.Heme: The color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins.Chlorpheniramine: A histamine H1 antagonist used in allergic reactions, hay fever, rhinitis, urticaria, and asthma. It has also been used in veterinary applications. One of the most widely used of the classical antihistaminics, it generally causes less drowsiness and sedation than PROMETHAZINE.
... such an unknown chiral compound could be assigned either a D- or an L-configuration. The use of vanadium pentoxide for the ... Before the invention of x-ray crystallography the exact determination of the configuration at a chiral carbon atom was ... With this starting point, all related chiral compounds could be chemically transformed into (−)- or (+)-glyceraldehyde. By ...
A compound containing the epoxide functional group can be called an epoxy, epoxide, oxirane, and ethoxyline. Simple epoxides ... The precursor compounds are called halohydrins. Starting with propylene chlorohydrin, most of the world's supply of propylene ... Chiral epoxides can often be derived enantioselectively from prochiral alkenes. Many metal complexes give active catalysts, but ... An epoxide is a cyclic ether with a three-atom ring. This ring approximates an equilateral triangle, which makes it strained, ...
Dialkylzinc compounds are monomeric with a linear coordination at the zinc atom. A polar covalent bond exists between carbon ... Aryltrimethylzincates participate in vanadium mediated C-C forming reactions. Low valent organozinc compounds having a Zn-Zn ... In the presence of chiral ligands, the reaction is fast and gives high conversion. Noyori determined that a monozinc-ligand ... The first such compound, decamethyldizincocene, was reported in 2004. Compounds of zinc Compounds of carbon with other elements ...
... isopropoxide is used in the synthesis of chiral organic compounds via the Sharpless epoxidation. Titanium forms a ... In nature, this compound is found in the minerals anatase, brookite, and rutile. Paint made with titanium dioxide does well in ... The titanium is often alloyed with about 4% aluminium or 6% Al and 4% vanadium. Titanium has the inherent ability to ... titanium for implantation in the body involves subjecting it to a high-temperature plasma arc which removes the surface atoms, ...
This compound is used as a reducing agent in organic synthesis, especially for the reduction of esters, carboxylic acids, and ... The Li+ centers are bonded to one hydrogen atom from each of the surrounding tetrahedra creating a bipyramid arrangement. At ... This process can be accelerated by the presence of catalytic elements, such as titanium, iron or vanadium. When heated LAH ... Seebach, D.; Kalinowski, H.-O.; Langer, W.; Crass, G.; Wilka, E.-M. (1991). "Chiral Media for Asymmetric Solvent Inductions. (S ...
Vanadium dioxide has been investigated for use as a "spectrally-selective" window coating to block infrared transmission and ... Virtually all inorganic compounds are thermochromic to some extent. Most examples however involve only subtle changes in color ... Bis(dimethylammonium) tetrachloronickelate is a raspberry-red compound, which becomes blue at about 110 °C. On cooling, the ... through anisotropic chiral or twisted nematic phase, to the high-temperature isotropic liquid phase. Only the nematic mesophase ...
... (also osmium(VIII) oxide) is the chemical compound with the formula OsO4. The compound is noteworthy for its ... Other osmium compounds can be used as catalysts, including osmate(VI) salts ([OsO2(OH)4)]2−, and osmium trichloride hydrate ( ... As the oxygen atoms are added in a concerted step the resulting stereochemistry is cis. ... If the amine is chiral, then the dihydroxylation can proceed with enantioselectivity (see Sharpless asymmetric dihydroxylation ...
In chemistry, an amphoteric compound is a molecule or ion that can react both as an acid and as a base.[1] Many metals (such as ... Instead it is a Lewis acid whose Zn atom accepts an electron pair from the base OH−. The other metal oxides and hydroxides ... Some other elements which form amphoteric oxides are gallium, indium, scandium, titanium, zirconium, vanadium, chromium, iron, ... and self-ionizable compounds such as water. ... all amphiprotic substances contain a hydrogen atom. Also, since ...
No compounds of zinc in oxidation states other than +1 or +2 are known. Calculations indicate that a zinc compound with the ... Enzymes with a zinc atom in the reactive center are widespread in biochemistry, such as alcohol dehydrogenase in humans. ... The results (yield and ee) obtained with chiral zinc catalysts are comparable to those achieved with palladium, ruthenium, ... Vanadium, and Zinc. National Academy Press. 2001. "Overview on Dietary Reference Values for the EU population as derived by the ...
2, a zinc compound with a +1 oxidation state.[36] No compounds of zinc in oxidation states other than +1 or +2 are known.[40] ... Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ... The results (yield and ee) obtained with chiral zinc catalysts are comparable to those achieved with palladium, ruthenium, ... Ribbon diagram of human carbonic anhydrase II, with zinc atom visible in the center ...
The precursor compounds are called halohydrins.[18] Starting with propylene chlorohydrin, most of the world's supply of ... An epoxide is a cyclic ether with a three-atom ring. This ring approximates an equilateral triangle, which makes it strained, ... A compound containing the epoxide functional group can be called an epoxy, epoxide, oxirane, and ethoxyline. Simple epoxides ... Chiral epoxides can often be derived enantioselectively from prochiral alkenes. Many metal complexes give active catalysts, but ...
... such an unknown chiral compound could be assigned either a D- or an L-configuration. The use of vanadium pentoxide for the ... Before the invention of x-ray crystallography the exact determination of the configuration at a chiral carbon atom was ... With this starting point, all related chiral compounds could be chemically transformed into (−)- or (+)-glyceraldehyde. By ...
A compound containing the epoxide functional group can be called an epoxy, epoxide, oxirane, and ethoxyline. Simple epoxides ... The precursor compounds are called halohydrins. Starting with propylene chlorohydrin, most of the worlds supply of propylene ... Chiral epoxides can often be derived enantioselectively from prochiral alkenes. Many metal complexes give active catalysts, but ... An epoxide is a cyclic ether with a three-atom ring. This ring approximates an equilateral triangle, which makes it strained, ...
Compound 1is a member of a large family of supramolecular metallic compounds recently derived from a proton transfer ion pair,( ... Aqueous two phase chiral-extraction with strong chiral separation ability, plays great role in preparative separation of ... The spectroscopic data revealed that the oxygen atoms of salen moieties were selectively bonded to the three phosphorus atoms ... Cloud Point and Solid Phase Extraction of Vanadium in Surface and Bottled Mineral Water Samples Using 8-Hydroxyquinoline as a ...
Patent 5208357: Chiral metallocene compounds and preparation thereof by attachment of chiral center. (ORGANIC COMPOUNDS -- PART ... Metal atom is part of an organic compound : Organic metal compound contains a Group I or Group II metal atom :). Patent 5208270 ... Patent 5208303: Process for preparing a vanadium-based catalyst suitable for olefin polymerization. (SYNTHETIC RESINS OR ... Nitrogen compound contains a nitrogen atom bonded to three carbon atoms and wherein none of the carbon atoms are double-bonded ...
The present invention relates to a preparation method for a medicine and an intermediate compound thereof, specifically, ... relates to a preparation method for entecavir, an intermediate compound thereo ... to afford chiral Intermediate 9. Then epoxidation of Intermediate 9 by t-BuO.sub.2H under catalysis of acetylacetone vanadium ... In the compounds of above formula, the compounds in the following table are particularly preferred. TABLE-US-00001 Compound ...
... alkyl groups having from 1 to 18 carbon atoms and cycloaliphatic compounds having from 3 to 18 carbon atoms. The substituents ... The charge transport layer forming mixture preferably comprises an aromatic amine compound of one or more compounds having the ... William H. Pirkle et al, "α-Arylalkylamide-Derived Chiral Stationary Phase Evaluation of Urea Linkages", Journal of ... Typical metals include aluminum, zirconium, niobium, tantalum, vanadium, hafnium, titanium, nickel, stainless steel, chromium, ...
... of a chiral vanadium catalyst and aqueous H,O, as oxidizing agent, sulfides can be converted under the simplest of conditions ... The chalcogen atoms cover the walls of the pores. Ta,(S,Te),: Microporous Tantalum with Chalcogen-Coated Inner Surfaces Alkynes ... These compounds are expected, like the isoelectronic silanetrioles RSi(OH),, to exhibit a wide range of reactivityselective ... In an attempt to synthesize the analogous compound containing [C(SiMe,),{SiMe,(HC=CH,))]- as anion, crystals of 2 were obtained ...
The preparation of isotactic PP using a soluble, stereorigid, chiral Zr compound and an aluminoxane is also known (cf. EP-A ... in these compounds is no longer chiral due to mirror symmetry at the central metal. Separation of the stereoisomers is known in ... CH2 in which R denotes an alkyl radical having 1 to 28 carbon atoms, preferably 1 to 10 carbon atoms, in particular one carbon ... Me is a metal from group IVb or Vb of the Periodic Table of the Elements, i.e. titanium, zirconium, hafnium, vanadium, niobium ...
Group 4 and vanadium metallocenes are useful metallocenes and the components typically include an electron donor such as an ... The present invention relates to components of catalysts for the polymerization of olefins comprising a metallocene compound ... The alkyl-Al compound is generally selected from compounds of formula AlR3, in which R is an alkyl that has 1-12 carbon atoms, ... The chiral metallocene compounds that can be used are for example of the type described in European Application EP-A-485823, EP ...
G60.00150: Doping effects on itinerant-electron magnetism of Laves compound AFe2 (A = Ti and Zr). Yuki Takei, Sou Enomoto, ... G60.00184: Enhanced Intrinsic Spin Hall Effect of Bi Atoms on Ag(001) Surface. Zhe Wang, Yizheng Wu, Ruqian Wu ... G60.00201: The role of crystal structure on magnetocrystalline anisotropy in non-cubic YCo5 and ZrCo5 compounds. Masahiro ... G60.00156: Magneto-Raman Spectroscopy on Vanadium-derived Lacunar Spinel GaV4S8. Gary Knight, Zhengguang Lu, Ganesh Pokharel, ...
Shell suits: Two shells of Ga12 icosahedra characterize the arrangement of 24 gallium atoms in the title compound (see ... Pseudofullerene Shell of 60 Carbon Atoms and 60 Methyl Groups Protecting a Cluster Core of 50 Aluminum Atoms Cluster Compounds ... Cationic and Neutral Four-Coordinate Alkylidene Complexes of Vanadium(iv) Containing Short V糃 Bonds DNA Synthesis M. Taki, Y. ... from chiral imide 1 in 18 % overall yield. The key steps included a highly anti-selective aldol reaction, the stereoselective ...
Theoretical study on the electronic structures and magnetism of Fe3Si intermetallic compound, Journal of Alloys and Compounds ... Homochiral Zinc(II) Coordination Compounds Based on In-Situ-Generated Chiral Amino Acid-Tetrazole Ligands: Circular Dichroism, ... Phase stability, magnetism and generalized electron-filling rule of vanadium-based inverse Heusler compounds, Europhysics ... Behaviors and interactions of La atom with other foreign substitutional atoms (Al, Si, Ti, V, Cr, Mn, Co, Ni, Cu, Nb or Mo) in ...
... hetero atom, m and n are identical or different and are zero, 1, or 2, and m+n is zero, 1, or 2. ... and the Zr or Hf central atom is coordinated with two ligands which are derivatives of 2-substituted indenyl nuclei and which ... hetero atom, m+n is zero or 1, and R10 is hydrogen, form, together with aluminoxanes as cocatalysts, a very effective catalyst ... Process for the preparation of a chiral, stereorigid metallocen compound. EP0336128B1. Mar 7, 1989. Jan 27, 1993. Hoechst ...
... in these compounds is no longer chiral due to the mirror symmetry at the central metal atom and it is therefore not possible to ... One of the methods is, for example, to react an aluminum hydrocarbon compound and/or a hydridoaluminum hydrocarbon compound ... vanadium, niobium, tantalum, chromium, molybdenum or tungsten, preferably zirconium, hafnium or titanium. ... an OH group or a halogen atom, the radicals R3 are identical or different and are a hydrogen atom, a halogen atom, a C1 -C10 - ...
... where each alkyl radical is of 1 to 10 carbon atoms and each aryl radical is of 6 to 20 carbon atoms, R 1 to R 6 are each ... an open-chain or cyclic alumoxane compound of the general formula VI or VII ##STR3## where R 18 is C 1 -C 4 -alkyl and m is an ... carbon atoms, or Si(R 8 ) 3 R 8 is C 1 -C 10 -alkyl, C 6 -C 15 -aryl or C 3 -C 10 -cycloalkyl, is silicon, germanium, tin or ... where two adjacent radicals together may furthermore be a cyclic group of 4 to 15 carbon atoms, or Si(R 17 ) 3 , R 17 is C 1 -C ...
... to share standard protocols for the labelling of individual atoms in complex molecules. This will facilitate clear and ... AbstractProcedures are proposed for the naming of individual atoms, P, O, F, N, and S in phosphate esters, amidates, ... These oxygen atoms are spectroscopically and chemically non-equivalent in a chiral environment. ... It was concerned with the naming of compounds, but did not consider the identification of the individual atoms of the phosphate ...
... in a high space-time yield if a catalyst system is used which comprises an aluminoxane and a stereorigid metallocene compound ... 3. The compound as claimed in claim 1, wherein R14 and R15 are identical or different and are a halogen atom or a C1-C10-alkyl ... Catalysts which can be used for cyclic olefins are stereorigid chiral metallocene compounds, such as, for example, ethylenebis( ... M1 is titanium, zirconium, hafnium, vanadium, niobium or tantalum, R14 and R15 are identical or different and are a hydrogen ...
Such inorganic fluorine containing compounds may be any compound containing a fluorine atom as long as it does not contain a ... The molecules represented by structures (1) through (3) can exist as both chiral and achiral structures. These chiral ... vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo) and tungsten (W), R is a hydrocarbyl group or ... The term "activator" is defined herein to be any compound or component, or combination of compounds or components, capable of ...
Chiral primary amine/palladium dual catalysis for asymmetric allylic alkylation of β-ketocarbonyl compounds with allylic ... for the direct α-vinylidenation between the aldehyde 6 and alkyne compound 61, provided a mixture of the α-allenyl aldehyde 63 ... Sud A, Sureshkumar D, Klussmann M (2009) Oxidative coupling of amines and ketones by combined vanadium- and organocatalysis. ... providing β-branched ketones with excellent branched selectivity in an atom- and step economic approach [66]. Kang and ...
Lorber, C., Despagnet-Ayoub, E., Vendier, L., Arbaoui, A., & Redshaw, C. (2011). Amine influence in vanadium-based ethylene ... Manoury, E., & Poli, R. (2011). Phosphine-Containing Planar Chiral Ferrocenes: Synthesis, Coordination Chemistry and ... High quality nano-patterned thin films of the coordination compound {Fe(pyrazine)[Pt(CN)4]} deposited layer-by-layer. New ... complexes stabilized by beta-ketiminato ligands and application in the reverse atom-transfer radical polymerization of styrene ...
Noam Levi; Ronny Neumann (2012). Manganese Salen Compounds Embedded within Cross-Linked Chiral Polyethylenimine: Asymmetric ... Neumann R, Assael I (1989). The Vanadium(V)/Vanadium(III) Redox Couple in Acidic Organic Media: The Structure of a Vanadium ( ... Irena Efremenko; Roy Emanuel Schreiber; JML Martin; Ronny Neumann (2014). DFT study of the quasi Wells-Dawson compound [Mn(L) ... Hydrogen-Atom Transfer Oxidation with H2O2 Catalyzed by [FeII(1,2-bis(2,2 -bipyridyl-6-yl)ethane(H2O)(2)](2+): Likely ...
For polymers of chiral molecules, the polymer may contain the D-form, the L-form, or a mixture of the D- and L-forms. For ... Just loading these compounds into carriers can provide many benefits over treatment with free drugs. For example, encapsulation ... The atomizer can also utilize a single spray nozzle or a compound spray nozzle. The atomizer is preferably made of a material ... 6.365×10−21 mol×6.022×10−23 g mol−1=3.833 silver atoms per nanoparticle (4). ...
Organomercury compounds. Organic mercury compounds. Chemical compound. A chemical compound is a pure chemical substance ... Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together ... It occurs in two diastereomers, meso and the chiral dl forms.... (DMSA). In one small study including 11 construction workers ... vanadium, and tungsten... ... Organic compound. An organic compound is any member of a large ...
It also states that a transition metal is "an element whose atom has an incomplete d sub-shell, or which can give rise to ... Silver nitrate compounds are used in silver plating, applied in mirrors and tableware. (Most mirrors today, however, use ... Instead, the mysterious compound turned a yellowish-orange.. Strohmeyer continued to analyze the sample, and eventually ... vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, and rhenium-are referred to here as "alloy metals." ...
51V NMR has been used to study the binding of vanadium, vanadate and vanadium compounds to a number of different proteins ... 129Xe NMR spectra obtained at 11.7 T and 293 K for compound 1 (9 mm) in D2O (A) and compound 11 (37 mm) in D2O (B). Inset: ... Every 10-20 s, a transverse DC field of magnitude 5.3 mT is switched on for 4 ms to tip the 129Xe atoms onto the x-y plane and ... 59Co NMR has been used to probe interactions of [Co(NH3)6]3+ with helical B-DNA (Braunlin et al., 1987) and for chiral ...
  • Before the invention of x-ray crystallography the exact determination of the configuration at a chiral carbon atom was impossible. (wikipedia.org)
  • 7. The imaging member of claim 2, wherein D is an alkoxy derivative of polysiloxane having from 1 to 20 carbon atoms. (google.ca)
  • Carbon-hydrogen bond activation of arenes and alkylarenes by electron transfer followed by oxygen transfer catalyzed by vanadium substituted polyoxometalates - A comparative study of the reactivity of different polyoxometalate compounds. (weizmann.ac.il)
  • The presence of the transition metals, along with the heat of combustion generated by an automobile engine causes an exhaust coming from an internal combustion engine to be broken down from partially burned hydrocarbon compounds into less harmful compounds such as water vapour and carbon dioxide. (ukessays.com)
  • PLANT PROTECTING AND REGULATING COMPOSITIONS : PLANT GROWTH REGULATING COMPOSITIONS (E.G., HERBICIDES, ETC.) : Organic active compound containing : Containing nitrogen, other than as nitro or nitroso, attached directly or indirectly to carbon by nonionic bonding : Carboxamides or thiocarboxamides (i.e. (everypatent.com)
  • 6. The process of claim 1 wherein the catalyst component slurry comprises a diluent selected from the group consisting of mineral oil, silicone oil, an alkane or a branched alkane having from 3 to 60 carbon atoms, and combinations thereof. (google.co.uk)
  • 12. The process of claim 10 wherein the catalyst component solution comprises a liquid solvent selected from the group consisting of an alkane having from 5 to 30 carbon atoms, a cyclic alkane, an aromatic compound, mineral oil and combinations thereof. (google.co.uk)
  • 5. The metal complex according to claim 1, wherein, in the formula (1), the substituent represented by any of R.sup.1 to R.sup.6 is a halogeno group, a linear or branched saturated hydrocarbon group having 1 to 20 carbon atoms in total, alinear or branched alkoxy group having 1 to 10 carbon atoms in total, or an aromatic group having 6 to 30 carbon atoms in total. (patentgenius.com)
  • These compounds possess a common flavane (2‐phenyl‐benzo‐γ‐piran) nucleus, consisting of an aromatic A‐ring fused to a heterocyclic C‐ring, attached through a single carboncarbon bond to a benzene B‐ring ( Figure 1 ). (intechopen.com)
  • The present invention provides a system containing an array of chemically sensitive sensors based on coated single walled carbon nanotubes, for measuring volatile organic compounds indicative of renal failure. (justia.com)
  • National Institute of Standards and Technology (NIST) August 24th, 2018 In a marriage of quantum science and solid-state physics, researchers at the National Institute of Standards and Technology (NIST) have used magnetic fields to confine groups of electrons to a series of concentric rings within graphene, a single layer of tightly packed carbon atoms. (sciencesgate.com)
  • Compound 1 possesses a cationic 1D polymeric chain [Dy(HL)(L) 1.5 (H 2 O) 3 ] n 4n+ with cyclic-, chain- and semi-cyclic-like fragments, corresponding to three different configurations of the double-betaine-containing ligand. (chemweb.com)
  • This composite compound displays electrocatalytic activities towards the reduction of nitrite and the luminescent property.The reaction between a double-betaine-containing ligand and LnHPMo 11 VO 40 ·nH 2 O leads to a new polyoxometalate-based lanthanide-organic hybrid chain.Display Omitted► In this study we report a new polyoxometalate(POM)-based lanthanide-organic hybrid compound. (chemweb.com)
  • The literature discloses the preparation of polyolefins using soluble metallocene compounds in combination with aluminoxanes or other cocatalysts which, due to their Lewis acidity, are able to convert the neutral metallocene into a cation and stabilize it. (google.com)
  • Soluble metallocene compounds based on bis(cyclopentadienyl)dialkylzirconium or bis(cyclopentadienyl)zirconium dihalide in combination with oligomeric aluminoxanes are capable of polymerizing ethylene in good activity and propylene in moderate activity. (google.com)
  • Their purpose is to enable scientists in very different fields, e.g. biochemistry, biophysics, chemistry, computational chemistry, crystallography, and molecular biology, to share standard protocols for the labelling of individual atoms in complex molecules. (degruyter.com)
  • These 1D chains are connected together by the H-bonds and π-π interactions to form a 3D supramolecular framework, encapsulating the vanadium-substituted Keggin-type polyoxoanions [PMo 11 VO 40 ] 4− and the solvent molecules. (chemweb.com)
  • We show that any coherent second-order nonlinear optical process in a system of randomly oriented molecules requires the medium to be chiral. (mpg.de)
  • The novel metallocenes of the formula I in which, preferably, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl, -(CR8R9)m-R7-(CR8R9)n- is a single- or multi-membered chain in which R7 may also be a (substituted) hetero atom, m+n is zero. (google.com)
  • A new chiral separation technology, aqueous two-phase extraction, was proposed for the separation of racemic mandelic acid. (magiran.com)
  • Aqueous two phase chiral-extraction with strong chiral separation ability, plays great role in preparative separation of racemic compounds and is important for the development of aqueous two phase extraction technique. (magiran.com)
  • It also states that a transition metal is "an element whose atom has an incomplete d sub-shell, or which can give rise to cations with an incomplete d sub-shell. (ukessays.com)
  • A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus. (absoluteastronomy.com)
  • In chemistry and physics, the atomic number is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. (absoluteastronomy.com)
  • In addition, seven of the compounds combine multiple types of atomic arrangements, which are mesoscopically distributed along the crystals. (sciencemag.org)
  • Rev. A 63, 047801 (2001)], then there would be an electric dipole in the y direction induced in a hydrogen atom in the M-s = + 1/2 state by a static electric field in the x direction. (mpg.de)
  • 3. Formation of ( h ‑ Cyclopentadienyl)pentahydrido (trimethylphosphino)-tungsten from Cyclopentane, Trimethylphosphine and Tungsten atoms. (columbia.edu)
  • Cloud point extraction (CPE) and solid phase extraction (SPE) methods were developed for the determination of µg l-1 of vanadium ions in surface, tap and bottled mineral water samples, based on the rapid reaction of vanadium(V) with 8-hydroxyquinoline (8-quinolinol) at pH 3-5. (magiran.com)
  • High quality nano-patterned thin films of the coordination compound {Fe(pyrazine)[Pt(CN) deposited layer-by-layer. (lcc-toulouse.fr)
  • Two model compounds of the active site of [NiFe]-hydrogenases with an unusual {S₂Ni(μ-S)(μ-CO)Fe(CO)₂S}-coordination environment around the metals are reported. (usda.gov)
  • More particularly, the invention relates to a thiol compound derivative which is added to a polymer having reactivity to a thiol derivative substituent to provide a curable composition, a curable composition containing the derivative and a crosslinkable halogen-containing crosslinking polymer, and a crosslinked molded product of the composition. (patentsencyclopedia.com)
  • Influences on shapes and mechanical properties of compound particles, wettability of compound with the spraying metal, and generation of {eta}(Co6W6C) in the WC-Co alloy are pointed out as the problems. (worldwidescience.org)
  • Proposals for next-generation quantum- and spin-based electronics also rely on the tuning of the charge, spin, and interactions of dopant atoms with local electric fields. (anl.gov)
  • Structural analysis shows that compound 1 possesses unprecedented (3,4)-connected tfi topology. (chemweb.com)
  • The rotationally invariant susceptibility is zero in the static field limit and shows exceptionally sensitive resonance and dephasing effects that are particular to chiral centers. (mpg.de)