Sodium hydrogen bis

The location of protons in intermolecularly hydrogen-bonded carboxylate-carboxylic acid complexes, for example sodium hydrogen bis(acetate) [1],... 

Sodium hydrogen acetate (diacetate) Sodium hydrogen carbonate Sodium hydrogen (bi) sulphite... 

Mixed dinuclear complexes of tartrates and 2,2 -bipyridyl or 1,10-phenanthroline and chromium(III) have been prepared 934,935 the typical structure is illustrated below (213). Stereochemical correlations have been carried out by oxidatively cleaving the tartrate bridge (214,215).936 The crystal structure of sodium hydrogen bis(//-meso-tartrato)bis(2,2 -bipyridyl)dichromate(III) heptahydrate has been reported.937... 

Spinner, E., Vibrational spectrum of solid sodium hydrogen bis(formate). An unsymmetrical very... 

R 2.47 A (Fig. 9.2(b), sodium hydrogen bis(4-nitrophenoxide)dihydrate [36]) The lowest proton level is slightly below the central barrier. The 0) and 1) levels draw together and the 0) —> 1) transition is around 600 cm i, in accord with the experimental data [36]. The separation of the corresponding levels for the deuteron decreases faster with R growth than does the proton levels. This is why the y value is very high ( 2). 

Sodium Salt (2 1), CI(H3 NaO, sodium hydrogen bis(2-propylpentanoatel, divalproex sodium, Abbott-50711, Depakote. 

A route to derivatives of o-rhamnose is mentioned in Chapter 7 (see Scheme 30), while a new preparation of 5-deoxy-D-lyxose derivatives is based on reductive cleavage of methyl 2,3-0-isopropylidene-5-0-toluene-p-sulphonyl-a-D-lyxofurano-side (prepared from methyl 2,3-0-isopropylidene-a-D-mannofuranoside) with sodium borohydride in DMSO. The reductive cleavage of carbohydrate 6-sulphonates with sodium hydrogen bis-(2-methoxyethoxy)aluminate has been discussed in Chapter 6. 

The systematic name for bi carbonate ion is hydrogen carbonate Thus the system atic name for sodium bicar bonate (NaHCOs) is sodium hydrogen carbonate... 

A solution of ( )-l,2-bis(trimethylsilyl)oct-l-ene (12mmol) in glacial AcOH (31 ml) and H20 (1.6 ml) was heated with stirring at 110°C for 29 h. The mixture was then cooled to0°C, aqueous NaOH (60 ml, 9 m) added, and the total was extracted with ether (50 ml). The ethereal extract was washed with saturated sodium hydrogen carbonate solution and brine, and dried. Concentration and distillation gave 2-trimethylsilyloct-l-ene (U.5mmol, 96%), b.p. 106 °C/1 mmHg. 

The preparation of thiols by nucleophilic displacement reactions using aqueous potassium or sodium hydrogen sulphide under catalytic conditions is not particularly effective. A limited number of simple alkane thiols have been obtained under mild and neutral conditions in moderate yield (70-80%) from the reaction of bis(n-butyltin) sulphide with bromoalkanes in the presence of a ca. twofold amount of tetra-n-butylammonium fluoride [1], but there has been no exploitation of this procedure. 

Sodium hydrogen telluride, sodium 0,0-diethyl phosphorotellurolate, alkali 2-thienyl tellurolates and bis(triphenylstannyl) telluride °/KF reduce a-haloketones to the corresponding ketones. 

Biphenyl-Diphenyl Ether Bis(Acetato)Dioxouranium Bis(2-Aminoethyl)Amine N, N-Bis(2-Aminoethyl) Ethylenediamine Bis(P-Chlorobenzoyl) Peroxide Bis(2-Chloroethyl) Ether Bis(2-Chloroethyl) Ether Bis(Dimethylthiocarbamyl) Disulfide Bis(Dimethylthiocarbamyl) Disulfide Bis(2-Ethylhexyl) Hydrogen Phosphate Bis-(2-Ethylhexyl)Hydrogen Phosphate Bis(2-Ethylhexyl) Phthalate Bis(2-Ethylhexyl)Sodium Sulfosuccinate Bis(2-(2-Hydroxyethoxy)Etlryl) Ether... 

Dimethyl-y-pyrone reacts with sodium selenide (or sodium hydrogen selenide) to give 2,6-dimethyl-4-seleno-y-pyrone (66). This, in turn, reacts with sodium selenide to give 4,6-bis(hydroseleno)-3,5-heptadien-2-one (67), which is readily oxidized by air to 5-methyl-l,2-diselenol-3-yIidene acetone (68).84,85... 

Symmetrical 3,5-dialkyl-l,2,4-trithiolanes (178) can be synthesized in reasonable yield by chlorination of dialkyl disulfides (175) to a-chiloroalkyl sulfenyl chlorides (176), which are then reacted with potassium iodide to give di-a-chloroalkyl disulfides (177). Subsequent cyclization with sodium sulfide gave (178) (72T3489). When (176) was treated with one molar equivalent of sodium sulfide, the reductive dimerization and cyclization was effected in one step (78HCA1404). Treatment of perfluoropropene with sodium hydrogen sulfide in THF resulted in the formation of 3,5-bis(2,2,2-trifluoroethyl)-l,2,4-trithiolane (179) (72IZV2517). 

Bis[triphcnylstannyl] Tellurium4 A solution of sodium hydrogen telluride is prepared from tellurium and sodium borohydride in aqueous ethanol. A benzene solution of chlorotriphenylstannane (2 mol/mol of tellurium) is added dropwise, the benzene layer is separated, and evaporated to dryness. The residue is recrystallized several times from diethyl ether/hexane m.p. 150°. 

Bis[tetraethylammonium tetrakis[benzenetellurolato] ferrate(II) was obtained from sodium benzenetellurolate and the tetrachloroferrate(II) salt as a red solid. This compound reacted with sodium hydrogen tclluridc to give a complex with an Fc/Tc/benzenctcllurolatc ratio of 1 1 l3. 

Tris[tetraethylammonium] Tetrakis [benzenetellurolate(tellurido) ferrate]3 Under an atmosphere of nitrogen, 4.54 g (4 mmol) of bis[tetraethylammonium] tetrakis[benzenetellurolato]ferrate(II) dissolved in 40 m/ acetonitrile are dropped into a solution of sodium hydrogen telluride in 30 ml acetonitrile. (The sodium hydrogen telluride was prepared from 0.51 g (4.0 mmol) tellurium powder and a three-fold excess of sodium borohydride in ethanol, evaporation of the ethanol, and dissolution of the residue in 30 ml acetonitrile.) The... 

Bis[3-phcnyl-l-rf-propyl] Ditellurium1 A suspension of 266 mg (2.0 mmol) 3-phenylpropanal and 1.75 g (4.0 mmol) aluminum telluridein 10 ml tetrahydrofuran is cooled to - 78°. A solution of 0.21 m/(4.0 mmol) of concentrated (98%) sulfuric acid in 1.75 ml (96 mmol) deuterium oxide is added to the chilled suspension. The mixture is wanned to 20° and then heated to the reflux temperature with continuous stirring over a 30 min period. The mixture is then refluxed for 1.5 h. After cooling to 20°, the black precipitate is removed by filtration. The filtrate is washed with aqueous sodium hydrogen carbonate solution and dried with calcium sulfate. The mixture is filtered, the solvent removed from the filtrate, and the residue chromatographed with hexane/benzcnc (1 1) as the mobile phase. The product was obtained as a dark-red oil in 70% yield. 

Bis[2-carboxyphenvl] Ditellurium [Sodium disulfite Method]3 10 g (0.03 mol) of 2-carboxyphenyl tellurium bromide are suspended in 100 ml of water and a 10% solution of sodium disulfitc is added dropwiseto the red suspension. The precipitate is collected, dissolved in sodium hydrogen carbonate solution, filtered, and acid is added to the filtrate. The precipitated product is filtered yield 4.1 g (52%) m.p. 216° (dec.). 

Carbon monotelluride is only known as a ligand coordinated to osmium1,2 or molybdenum3. Air-stable carbonyldichloro(telluracarbonyl)bis triphenylphosphane]osmium(II) was obtained from carbonyldichloro(dichlorocarbene)bis[triphenylphosphane]osmi-um(III) and sodium hydrogen telluride in benzene1,2. 

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