A class of inorganic or organic compounds that contain the borohydride (BH4-) anion.

Crystal structure of human muscle aldolase complexed with fructose 1,6-bisphosphate: mechanistic implications. (1/466)

Fructose 1,6-bisphosphate aldolase catalyzes the reversible cleavage of fructose 1,6-bisphosphate and fructose 1-phosphate to dihydroxyacetone phosphate and either glyceraldehyde 3-phosphate or glyceraldehyde, respectively. Catalysis involves the formation of a Schiff's base intermediate formed at the epsilon-amino group of Lys229. The existing apo-enzyme structure was refined using the crystallographic free-R-factor and maximum likelihood methods that have been shown to give improved structural results that are less subject to model bias. Crystals were also soaked with the natural substrate (fructose 1,6-bisphosphate), and the crystal structure of this complex has been determined to 2.8 A. The apo structure differs from the previous Brookhaven-deposited structure (1ald) in the flexible C-terminal region. This is also the region where the native and complex structures exhibit differences. The conformational changes between native and complex structure are not large, but the observed complex does not involve the full formation of the Schiff's base intermediate, and suggests a preliminary hydrogen-bonded Michaelis complex before the formation of the covalent complex.  (+info)

Serine transhydroxymethylase from rabbit liver. Sequence of anonapeptide at the pyridoxal-5'-phosphate-binding site. (2/466)

The amino acid sequence of the coenzyme-binding site of serine transhydroxymethylase from rabbit liver has been determined. After reduction with NaBH4 and aminoethylation, a first sample of enzyme was digested with thermolysin and a single phosphopyridoxyl peptide was isolated. A second sample of similarly treated enzyme was digested with chymotrypsin and three phosphopyridoxyl peptides clearly originating from a unique coenzyme-binding site were isolated. Sequence analysis of these peptides indicate the following structure: Val-Val-Thr-Thr-His(Pxy)-Thr-Leu. Sequence homologies of the active site of various pyridoxalphosphate enzymes are discussed in terms of a possible catalytic role and of evolution of this class of proteins.  (+info)

Radioactive labelling of ribosomal proteins with reductive alkylation and its use in studying ribosome-cytosol interactions. (3/466)

Mouse brain ribosomes were radioactively labelled by a cell-free reductive alkylation reaction with NaBH4 and [14C]formaldehyde. The radioactivity was largely associated with ribosomal proteins, but little, if any, of the rRNA was radioactive after the alkylation procedure. Both ribosomal structural proteins and loosely associated components were successfully labelled by this procedure. The sedimentation properties of the ribosomes were unaltered and their ability to carry out poly(U)-directed protein synthesis, although decreased, was largely retained. Incubation of 14C-labelled ribosomes with brain cytosol resulted in a 17% loss of radioactivity, although treatment of the ribosomes with 1.0 m-KCl to remove the loosely associated factors rendered the ribonucleoprotein particles resistant to cytosol effects. The ribosome-cytosol interactions did not appear to be related to an exchange process, since the released radioactivity was largely degraded to acid-soluble material. In addition, the incubation of native ribosomes with brain cytosol resulted in an almost complete loss in the ability of the ribosomes to participate in cell-free protein synthesis.  (+info)

The iron sulfur protein AtsB is required for posttranslational formation of formylglycine in the Klebsiella sulfatase. (4/466)

The catalytic residue of eukaryotic and prokaryotic sulfatases is a alpha-formylglycine. In the sulfatase of Klebsiella pneumoniae the formylglycine is generated by posttranslational oxidation of serine 72. We cloned the atsBA operon of K. pneumoniae and found that the sulfatase was expressed in inactive form in Escherichia coli transformed with the structural gene (atsA). Coexpression of the atsB gene, however, led to production of high sulfatase activity, indicating that the atsB gene product plays a posttranslational role that is essential for the sulfatase to gain its catalytic activity. This was verified after purification of the sulfatase from the periplasm of the cells. Peptide analysis of the protein expressed in the presence of AtsB revealed that half of the polypeptides carried the formylglycine at position 72, while the remaining polypeptides carried the encoded serine. The inactive sulfatase expressed in the absence of AtsB carried exclusively serine 72, demonstrating that the atsB gene is required for formylglycine modification. This gene encodes a 395-amino acid residue iron sulfur protein that has a cytosolic localization and is supposed to directly or indirectly catalyze the oxidation of the serine to formylglycine.  (+info)

Reaction centers of photosystem II with a chemically-modified pigment composition: exchange of pheophytins with 13(1)-deoxo-13(1)-hydroxy-pheophytin a. (5/466)

Isolated reaction centers of photosystem II with an altered pigment content were obtained by chemical exchange of the native pheophytin a molecules with externally added 13(1)-deoxo-13(1)-hydroxy-pheophytin a. Judged from a comparison of the absorption spectra and photochemical activities of exchanged and control reaction centers, 70-80% of the pheophytin molecules active in charge separation are replaced by 13(1)-deoxo-13(1)-hydroxy-pheophytin a after double application of the exchange procedure. The new molecule at the active branch was not active photochemically. This appears to be the first stable preparation in which a redox active chromophore of the reaction center of photosystem II was modified by chemical substitution. The data are compatible with the presence of an active and inactive branch of cofactors, as in bacterial reaction centers. Possible applications of the 13(1)-deoxo-13(1)-hydroxy-pheophytin a-exchanged preparation to the spectral and functional analysis of native reaction centers of photosystem II are discussed.  (+info)

Reactions of lipid-derived malondialdehyde with collagen. (6/466)

Malondialdehyde is a product of fatty acid oxidation (e.g. from low density lipoprotein) implicated in the damage of proteins such as collagen in the cardiovascular system (Chio, K. J., and Tappel, A. L. (1969) Biochemistry 8, 2821-2827). Its concentration is raised in diabetic subjects probably as a side effect of increased protein glycation. Collagen has enzyme-catalyzed cross-links formed between its individual molecules that are essential for maintaining the structure and flexibility of the collagen fiber. The cross-link dehydro-hydroxylysinonorleucine reacts irreversibly with 10 mM malondialdehyde at least 3 orders of magnitude faster than glucose reactions with lysine or arginine, such that there is little cross-link left after 1 h at 37 degrees C. Other cross-links and glycated elements of collagen are also vulnerable. Several possible products of malondialdehyde with collagen cross-links are proposed, and the potential involvement of collagenous histidine in these reactions is discussed. We have also isolated Ndelta-(2-pyrimidyl)-L-ornithine from collagenous arginine reacted with malondialdehyde. The yields of this product were considerably higher than those from model reactions, being approximately 2 molecules/collagen molecule after 1 day at 37 degrees C in 10 mM malondialdehyde. Collagenous lysine-derived malondialdehyde products may have been present but were not protected from protein acid hydrolysis by standard reduction techniques, thus resulting in a multitude of fragmented products.  (+info)

The immobilization of adenine nucleotides on polysaccharides by using glutaraldehyde coupling and borohydride reduction. (7/466)

Adenine nucleotides were immobilized on modified Sepharose 4B or Dextran T40 with glutaraldehyde and reduced with KBH4. Binding was dependent on pH and the nature of the amino group on the modified polysaccharide. ATP bound to soluble dextran retained coenzyme activity with glycerol kinase. Binding is proposed to occur via a Schiff base.  (+info)

Reovirus messenger RNA contains a methylated, blocked 5'-terminal structure: m-7G(5')ppp(5')G-MpCp-. (8/466)

Reovirus mRNA synthesized in vitro by the virus-associated RNA polymerase in the presence of S-adenosylmethionine contains blocked, methylated 5'-termini with the structure, m-7G(5')ppp(5')G-MpCp. The functional significance and possible mechanism of formation of this novel 5'-5' terminal nucleotide linkage are discussed.  (+info)

Borohydrides are a class of chemical compounds that contain boron and hydrogen ions (H-). The most common borohydride is sodium borohydride (NaBH4), which is a white, solid compound often used in chemistry as a reducing agent. Borohydrides are known for their ability to donate hydride ions (H:-) in chemical reactions, making them useful for reducing various organic and inorganic compounds. Other borohydrides include lithium borohydride (LiBH4), potassium borohydride (KBH4), and calcium borohydride (Ca(BH4)2).

The most important borohydrides are lithium borohydride and sodium borohydride, but other salts are well known (see Table). ... Some homoleptic borohydride complexes are volatile. One example is uranium borohydride. Metal borohydride complexes can often ... Sodium borohydride is the borohydride that is produced on the largest scale industrially, estimated at 5000 tons/year in 2002. ... Borohydride refers to the anion [BH4]−, which is also called tetrahydridoborate, and its salts. Borohydride or hydroborate is ...
... aluminium borohydride is a covalent compound. Aluminium borohydride is formed by the reaction between sodium borohydride with ... "First-principles study on thermodynamical stability of metal borohydrides: Aluminum borohydride Al(BH4)3". J. Alloys Compd. 446 ... Aluminium borohydride, also known as aluminium tetrahydroborate, is the chemical compound with the formula Al(BH4)3. It is a ... ISBN 0-8493-0594-2. J. Kollonitsch & O. Fuchs (1955). "Preparation of Aluminium Borohydride and its Applications in Organic ...
Various steroids and vitamin A are prepared using sodium borohydride in at least one step. Sodium borohydride has been ... Exploiting this reactivity, sodium borohydride has been used in prototypes of the direct borohydride fuel cell. NaBH4 + 2 H2O ... since the alcohol produced attacks the borohydride to produce an ester of the borohydride, which then reduces the neighboring ... Sodium borohydride is a reducing agent that finds application in papermaking and dye industries. It is also used as a reagent ...
... is an inorganic compound with the chemical formula Be(BH4)2. Beryllium borohydride is formed by the ... The borohydride ions, BH−4, adopt a tetrahedral geometry. Beryllium is 6-coordinate and adopts a distorted trigonal prismatic ... It can also be formed by the reaction of beryllium chloride and lithium borohydride in a sealed tube at 120 °C: BeCl2 + 2LiBH4 ... The purest beryllium hydride is obtained by the reaction of triphenylphosphine, PPh3, with beryllium borohydride, Be(BH4)2 at ...
... (LiBH4) is a borohydride and known in organic synthesis as a reducing agent for esters. Although less ... As a hydride reducing agent, lithium borohydride is stronger than sodium borohydride but weaker than lithium aluminium hydride ... "Preparation of Quaternary Ammonium Borohydrides from Sodium and Lithium Borohydrides". J. Am. Chem. Soc. 74 (9): 2346-2348. doi ... Direct borohydride fuel cell The greater ratio of energy density to specific energy for hydrogen is because of the very low ...
... was discovered by Hermann Irving Schlesinger and Herbert C. Brown, who also discovered sodium borohydride. ... Uranium borohydride is the inorganic compound with the empirical formula U(BH4)4. Two polymeric forms are known, as well as a ... Uranium borohydride is, after uranium hexafluoride, the most volatile compound of uranium known with a vapor pressure of 4 mmHg ... Borohydrides are nonideal ligands for isotope separations, since there are isotopes of boron that occur naturally in high ...
... s (DBFCs) are a subcategory of alkaline fuel cells which are directly fed by sodium borohydride or ... 4H2 Direct borohydride fuel cells decompose and oxidize the borohydride directly, side-stepping hydrogen production and even ... Sodium borohydride could potentially be used in more conventional hydrogen fuel cell systems as a means of storing hydrogen. ... Choudhury, N.A.; Raman, R.K.; Sampath, S.; Shukla, A.K. An alkaline direct borohydride fuel cell with hydrogen peroxide as ...
If the borohydride is sodium borohydride, then methane is a side product. If the metal is lithium then no methane is produced. ... Schlesinger, H. I.; Brown, Herbert C (September 1943). "The Borohydrides of Gallium". Journal of the American Chemical Society ... When trimethylgallium reacts with diborane at -45°, methyldiborane is produced along with dimethylgallium borohydride. 2(CH3) ... or reacting a metal borohydride with trimethylborane in the presence of hydrogen chloride, aluminium chloride or boron ...
"Beryllium borohydride". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-11-22. PubChem. "Beryllium dibromide". pubchem.ncbi.nlm.nih. ... Na2B4O7 Sodium borohydride - NaBH4 Sodium bromate - NaBrO3 Sodium bromide - NaBr Sodium bromite - NaBrO2 Sodium carbide - Na2C2 ... 2 Beryllium borohydride - Be[BH4]2 Beryllium bromide - BeBr2 Beryllium carbonate - BeCO3 Beryllium chloride - BeCl2 Beryllium ... LiBr Lithium borohydride - LiBH4 Lithium carbonate (Lithium salt) - Li2CO3 Lithium chloride - LiCl Lithium hypochlorite - LiClO ...
However, these compounds are useful for reducing carboxylic acids and esters to alcohols, since sodium borohydride is not ... Chaikin, Saul W.; Brown, Weldon G. (1949-01-01). "Reduction of Aldehydes, Ketones and Acid Chlorides by Sodium Borohydride". ... Gribble, Gordon W.; Ferguson, Duncan C. (January 1975). "Reactions of sodium borohydride in acidic media. Selective reduction ... Banfi, Luca; Narisano, Enrica; Riva, Renata (2001-01-01). Sodium Borohydride. John Wiley & Sons, Ltd. doi:10.1002/047084289x. ...
"Asymmetric synthesis using chirally modified borohydrides. Part 3. Enantioselective reduction of ketones and oxime ethers with ...
... for the discovery of metal borohydrides; and the elaboration of practical procedures for their preparation; for the discovery ...
"Asymmetric synthesis using chirally modified borohydrides. Part 2. Enantioselective reduction of ketones with polymeric (S)- ...
"From Metal Hydrides to Metal Borohydrides". Inorganic Chemistry. American Chemical Society (ACS). 57 (17): 10768-10780. doi: ...
"Carbene-Stabilized Beryllium Borohydride". Journal of the American Chemical Society. 134 (24): 9953-9955. doi:10.1021/ja304514f ...
A good example is beryllium borohydride, which dimerizes to form three-center two-electron bonds. Compounds such as these ... Most common ligands attached to beryllium are halides, hydride (like beryllium borohydride in a three-center two-electron bond ... "Carbene-Stabilized Beryllium Borohydride". Journal of the American Chemical Society. 134 (24): 9953-9955. doi:10.1021/ja304514f ...
... with sodium borohydride. Chemically, N-methylphenyethanolamine is an aromatic compound, an amine, and an alcohol. The amino- ... and the product finally converted to racemic N-methylphenylethanolamine by means of sodium borohydride in ethanol. An efficient ...
He and Herbert C. Brown discovered sodium borohydride in 1940 and both were involved in the further development of borohydride ... "New developments in the chemistry of diborane and the borohydrides. General summary". Journal of the American Chemical Society ...
Christian, Meganne (2013). PH.D THESIS: Core-shell borohydrides for reversible hydrogen storage. www.unsworks.unsw.edu.au ( ... she received the 2011 Heinz Harant award and her doctorate in 2014 for research into hydrogen storage with borohydrides. After ...
"Preparation of quaternary ammonium borohydrides from sodium and lithium borohydrides". J. Am. Chem. Soc. 74 (9): 2346-2348. doi ... tetramethylammonium borohydride has been made from tetramethylammonium hydroxide as shown: Me 4 N + [ OH ] − + Na + [ BH 4 ...
Its conjugate base is the borohydride anion. Butterfly cluster compound "Borane". Burg, Anton B.; Schlesinger, H. I. (May 1937 ...
GRIBBLE, Gordon W.; HEALD, Peter W. (1975). "Reactions of Sodium Borohydride in Acidic Media; III. Reduction and Alkylation of ... The reduction of quinoline with sodium borohydride in the presence of acetic acid is known to produce Kairoline A. (C.f. ...
Sodium borohydride is one such reducing agent. Another option is the selection of appropriate counter ion or surfactant. The ...
". "Microsoft PowerPoint - Borohydride Reduction of Vanillin.ppt". 2005. Retrieved January 10, 2013. v t e (Articles without ...
4) Chirally modified borohydrides are also useful for enantioselective ketone reductions. Economical ligands derived from amino ... Stoichiometric reducing agents to accomplish this task include lithium aluminium hydride, sodium borohydride, alkoxy ... borohydrides, alkoxy aluminium hydrides, and boranes. Initial efforts toward enantioselective ketone reductions focused on the ... acids have been used to modify borohydrides, affording highly selective reducing agents. (5) Chiral alkylborohydrides are ...
WAGNER, J; TSHIKHUDO, T; KOHLER, J (2008-01-15). "Microfluidic generation of metal nanoparticles by borohydride reduction". ...
Subsequent reduction using sodium borohydride produced alcohol 51 . Reaction of this alcohol with the Ojima lactam 52 and a ... Reduction of this diketone with sodium borohydride provided unsaturated ketoalcohol 2, which was protected as an acetate. ...
While the use of sodium borohydride produces alcohols. (R group can also be hydrogens) The use of hydrogen peroxide can produce ...
The borohydride must be added gradually to the nickel salt solution, not the other way around, because the product catalyzes ... Reaction of sodium borohydride with nickel salts in ethanol solution. P-2 Nickel, a highly convenient, new, selective ... The P−2 form is prepared similarly from nickel(II) acetate and sodium borohydride in ethanol. An inert atmosphere was found ... doi:10.1021/ic50022a031 Charles A. Brown and Herbert C. Brown (1963): "The reaction of sodium borohydride with nickel acetate ...
"Structure and spectroscopy of CuH prepared via borohydride reduction". Acta Crystallographica Section B: Structural Science, ...
The most important borohydrides are lithium borohydride and sodium borohydride, but other salts are well known (see Table). ... Some homoleptic borohydride complexes are volatile. One example is uranium borohydride. Metal borohydride complexes can often ... Sodium borohydride is the borohydride that is produced on the largest scale industrially, estimated at 5000 tons/year in 2002. ... Borohydride refers to the anion [BH4]−, which is also called tetrahydridoborate, and its salts. Borohydride or hydroborate is ...
Here, calcium borohydride allows for the high-yielding synthesis of (C5Me5)2An(η3-H3BH)2 (An = Th, U) by reaction with (C5Me5)2 ... Arene uranium borohydrides: synthesis and crystal structure of η-C6Me6)U(BH4)3 journal, July 1989 * Baudry, Denise; Bulot, ... Triketiminate bis(borohydride) complexes of rare-earth metals [(2,6-Me{sub 2}C{sub 6}H{sub 3}N=CMe){sub 2}C(2,6-Me{sub 2}C{sub ... Uranium(iv) amido-borohydrides as highly active diene polymerisation catalysts journal, January 2013 * Mansell, Stephen M.; ...
Exploiting this reactivity, sodium borohydride has been studied as a prototypes of the direct borohydride fuel cell. ... Partial oxidation of borohydride with iodine gives octahydrotriborate: 3 [BH4]− + I2 → [B3H8]− + 2 H2 + 2 I−. Coordination ... since the alcohol produced attacks the borohydride to produce an ester of the borohydride, which then reduces the neighboring ... Sodium borohydride, also known as sodium tetrahydridoborate and sodium tetrahydroborate, is an inorganic compound with the ...
Heavy metal borohydrides. (U.S. Atomic Energy Commission, Technical Information Division, 1948), by H. R. Hoekstra, Joseph J. ...
Environmental Aspects of Sodium Borohydride. 6/29/2022. Using NaBH4 as a reducing agent makes it possible to solve ecological ...
Aldrich-215813; Potassium hydride 30 wt % dispersion in mineral oil; CAS Number: 7693-26-7; Linear Formula: KH; find related products, papers, technical documents, MSDS & more at Sigma-Aldrich.
... and dimethylarsane by aqueous borohydride and (methyl) arsenates. ...
Borohydride intermediates pave the way for magnesium-catalysed enantioselective ketone reduction. From DOI 10.1039/C9CC09111D ...
Find Dyes & Pigments manufacturers, suppliers, exporters and wholesalers in India. Dyes & Pigments suppliers companies listings with detailed Dyes & Pigments exporters catalogs - distributors and dealers for quality products
New factors governing stereoselectivity in borohydride reductions of β-D-glycoside-2-uloses - The peculiar effect of activated ...
229910000033 sodium borohydride Inorganic materials 0.000 description 1 * 239000012279 sodium borohydride Substances 0.000 ... A method of nuclear hydrogenation of β-phenethyl alcohol using rhodium chloride and sodium borohydride has also been reported ( ...
Sodium Metal, Sodium Hydride, Sodium Ethoxide, Sodium Borohydride, Barium, Chlorotrimethylsilane. Class 4.2. Spontaneously ...
Best way to check for active content of old borohydride?. Direct Volumetric Assay of Sodium Borohydride and Potassium ... Catalytic hydrogenation of methyl 3,4,5-trimethoxycinnamate using Cu/Co salts and sodium borohydride Quality!. Some mp data. 45 ... Borohydride. 10.1021/ac60077a054. Anal .... 5-1-2022 at 07:18. by: Mush. ...
Alkali free hydrolysis of sodium borohydride for hydrogen generation under pressure. International Journal of Hydrogen Energy, ...
The prevailing synthesis methodologies consume imprudent amounts of energy and use harmful chemicals such as sodium borohydride ...
First principles guided design of borohydride oxidation electrocatalysts. Janik, M. J., Rostamikia, G. & Hickner, M. A., 2011, ...
... sodium borohydride in 0.1 m PB to remove active aldehyde before processing for immunoperoxidase labeling. For this, the tissue ...
Reduction with sodium-borohydride yielded 81.8 percent of DMPS in urine, with a peak between 1 and 2 hours. Analysis of zinc ...
Efficient Catalysts for the Hydrolytic Evolution of Hydrogen from Sodium Borohydride. Molecular Catalysis 2022, 528, 112476. ... Efficient Hydrolytic Hydrogen Evolution from Sodium Borohydride Catalyzed by Polymer Immobilized Ionic Liquid-Stabilized ...
Baetsi ba Tlhokomelo ea Metsi, Fektheri, Bafani ba thepa ba Tsoang Chaena, Re ikemiselitse ho sebelisana le metsoalle ea khoebo e tsoang lapeng le kantle ho naha le ho theha bokamoso bo botle hammoho.
... sodium borohydride - NaBH4 and lithium borohydride - LiBH4 as examples. Cf "Thoughts on attending ICCF-19 in Padua by David ...
To a solution of the compound described above (0.022 g, 0.024 mmol) in MeOH (1 mL) was added sodium borohydride (0.001 g, 0.024 ... mmol). Additional sodium borohydride (0.004 g, 1.00 mmol) was added over a period of 3 hours. The reaction mixture was diluted ...
Some reducing agents, such as sodium borohydride and hydrazine, have elemental impurities, toxicity, and environmental impact ...
... nanowires as an efficient multifunctional catalyst for electrochemical water splitting and hydrolysis of sodium borohydride. XW ...
... and 5 are produced from PbTx-3 by opening of the A-ring lactone to the saturated and unsaturated diols using sodium borohydride ... and 5 are produced from PbTx-3 by opening of the A-ring lactone to the saturated and unsaturated diols using sodium borohydride ...
The reaction was fixed with 0.75% glutaraldehyde for 3 min, quenched for 5 min with 0.1% sodium borohydride, and analyzed ... sodium borohydride. Part of the reaction was squashed under a coverslip and analyzed microscopically. Images were acquired ...
  • The most important borohydrides are lithium borohydride and sodium borohydride, but other salts are well known (see Table). (wikipedia.org)
  • Lithium borohydride is an inorganic compound with molecular formula LiBH4. (axiomchemicals.in)
  • Lithium borohydride is a stronger reducing agent and is highly soluble in ethers. (axiomchemicals.in)
  • The chemists from Utrecht University have discovered a way to make the solid substance lithium borohydride (LiBH4) more than 1,000 times as conductive at room temperature. (inorganic-chemistry-and-catalysis.eu)
  • 2-(lithium borohydride (LiBH4) in THF (1.9?ml, 3.8?mmol) dropwise more than 10?min as well as the response mix was stirred in 273?K (20?min). (afl-journal.org)
  • Reduction with sodium-borohydride yielded 81.8 percent of DMPS in urine, with a peak between 1 and 2 hours. (cdc.gov)
  • Condensation cascades and methylgroup transfer reactions during the formation of arsane, methyl- and dimethylarsane by aqueous borohydride and (methyl) arsenates. (bvsalud.org)
  • In the borohydride anion and most of its modifications, boron has a tetrahedral structure. (wikipedia.org)
  • Metallic borohydride hydrazinates are novel boron- and nitrogen-based materials that appear to be promising candidates for chemical hydrogen storage. (edu.au)
  • Alkali metal borohydrides were first described in 1940 by Hermann Irving Schlesinger and Herbert C. Brown. (wikipedia.org)
  • Borohydride refers to the anion [BH4]−, which is also called tetrahydridoborate, and its salts. (wikipedia.org)
  • In this work, the relation between the equilibrium pressure at plateau region (plateau pressure) and the electronegativity of cation or anion in the metal halides or borohydrides was clarified. (ammoniaenergy.org)
  • Sodium borohydride is also used to reduce aldehydes and ketones in the production of pharmaceuticals including chloramphenicol, thiophenicol, vitamin A, atropine, and scopolamine, as well as many flavorings and aromas. (wikipedia.org)
  • The combination of sodium borohydride and amberlyst-15 (H + ) in tetrahydrofurane is a powerful reductor for unreactive ketones. (edu.pe)
  • abstract = "The combination of sodium borohydride and amberlyst-15 (H+) in tetrahydrofurane is a powerful reductor for unreactive ketones. (edu.pe)
  • Because of their high hydrogen content, borohydride complexes and salts have been of interest in the context of hydrogen storage. (wikipedia.org)
  • In its coordination complexes, the borohydride ion is bound to the metal by means of one to three bridging hydrogen atoms. (wikipedia.org)
  • Some homoleptic borohydride complexes are volatile. (wikipedia.org)
  • Metal borohydride complexes can often be prepared by a simple salt elimination reaction: TiCl4 + 4 Li[BH4] + Et2O (solvent) → Ti[BH4]4·Et2O + 4 LiCl Some metal tetrahydroborates transform on heating to give metal borides. (wikipedia.org)
  • Sodium borohydride is the borohydride that is produced on the largest scale industrially, estimated at 5000 tons/year in 2002. (wikipedia.org)
  • Borohydrides find wide use as reducing agents in organic synthesis. (wikipedia.org)
  • Sodium borohydride hydrazinates: synthesis, crystal structures, and th" by Jianfeng Mao, Qinfen Gu et al. (edu.au)
  • Herein, sodium borohydride hydrazinates, including NaBH 4 ·N2H 4 and NaBH 4 ·2N 2 H 4 , were synthesized via a facile solution synthesis approach based on the solid-liquid reaction between NaBH 4 and hydrazine in tetrahydrofuran (THF) solution. (edu.au)
  • Sodium borohydride is soluble in protic solvents such as water and lower alcohols. (detailedpedia.com)
  • Due to the limited knowledge about the crystal structure of trimetallic borohydrides, first, a crystal structure prediction study has been accomplished to determine the lowest-energy crystal structures of Al-based trimetallic borohydrides using the recently developed highly parallel FFCASP tool together with subsequent electronic structure calculations. (itu.edu.tr)
  • Iso-energetic crystal structures with different metal-borohydride coordinations were obtained with FFCASP especially for the higher borohydride stoichiometries, indicating a potential energy landscape with shallow minima, which make easier the phase transformations under temperature. (itu.edu.tr)
  • The NaBH 4 ·xN 2 H 4 (x = 1, 2) was characterized by Powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), and mass spectroscopy (MS) to obtain a full picture of the relationship of the structure to the decomposition, which will be useful for future work on borohydride hydrazinates or the study of other B-N materials. (edu.au)
  • Furthermore, magnesium borohydride hydrazinates were synthesized by ball milling the sodium borohydride hydrazinates with magnesium borohydride, and their thermal decomposition was investigated as well. (edu.au)
  • Sodium borohydride is an odorless white to gray-white microcrystalline powder that often forms lumps. (detailedpedia.com)
  • Enstitümüz Öğretim Üyelerinden Adem Tekin'in ve eski araştırma görevlilerinden Samet Demir'in yazarları arasında olduğu, 'Hydrogen Storage in Trimetallic Borohydrides: a Crystal Structure Prediction and Ab Initio Molecular Dynamics Simulations Study' başlıklı makale 'The Journal of Physical Chemistry C' dergisinde 25 Eylül 2023 tarihinde yayınlanmıştır. (itu.edu.tr)
  • Trimetallic borohydrides have emerged as promising candidates for hydrogen storage due to their unique structural and chemical properties. (itu.edu.tr)
  • When the borohydride complex is volatile, this decomposition pathway is the basis of chemical vapor deposition (CVD), a way of depositing thin films of metal borides. (wikipedia.org)
  • Sodium borohydride is a reducing agent that finds application in papermaking and dye industries. (detailedpedia.com)
  • Reduction with sodium-borohydride yielded 81.8 percent of DMPS in urine, with a peak between 1 and 2 hours. (cdc.gov)
  • Further, eriochrome black T when applied together with sodium borohydride showed an additive effect on reducing autofluorescence while combining Sudan black with sodium borohydride yielded no additional benefit. (nih.gov)
  • Lithium hydride is a salt-like white or gray crystalline powder, prepared by passing hydrogen gas over lithium metal and is majorly used in the preparation of lithium borohydride and lithium aluminum hydride. (coherentmarketinsights.com)
  • It has ha high melting point and is soluble with lithium borohydride, sodium hydride, and lithium fluoride. (coherentmarketinsights.com)
  • This growth is attributed to increasing adoption of lithium hydride in the production of various reagents such as lithium borohydride and lithium aluminum hydride, for organic synthesis. (coherentmarketinsights.com)
  • Silver nanoparticles-containing dual-function hydrogels based on a guar gum-sodium borohydride system. (americanelements.com)
  • A class of inorganic or organic compounds that contain the borohydride (BH4-) anion. (nih.gov)
  • DMAB is produced by the reaction of diborane with dimethylamine or a borohydride with an amine (e.g., dimethylamine, dimethylammonium salt, or amine hydrochloride salt). (nih.gov)
  • Histochemical differentiation utilizing the borohydride-KOH-PAS reaction. (nih.gov)
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  • Sodium borohydride (10(-3) to 10(-5) M) in PBS for 10 min at pH 7.4 reversed the periodate effect. (nih.gov)
  • Suppressor effect induced by sodium periodate on the antibody response of mouse splenic cells in vitro : inhibition of this effect by sodium borohydride]. (nih.gov)