Mercury atom diphenyl

Diorgano ditellurium compounds react with transition metal salts and carbonyl complexes to form coordination compounds (Table 5, p. 283). Complexes with the following transition metals have been reported Ti, Cr, Mo, W, Mn, Re, Fe, Ir, Ni, Pd, Pt, Cu, Ag, Cd, Hg, Yb, and U. In many of these complexes, the organyltelluro group bridges the metal atoms in binuclear complexes. The Te —Te bond seems to remain intact upon complexation to mercury halides, rhenium carbonyls, and uranium pentachloride. For details on tellurolatO bridged complexes see p. 212. Complexes with SnCl are also known. Diphenyl ditellurium and bis[4-ethoxyphenyl] ditellurium formed charge-transfer complexes when equimolar amounts of the ditellurium compound and tetracyano-p-quinodime-thane were refluxed in acetonitrile. ... 

Phenylmercuric bromide may be obtained from phenyl magnesium bromide and mercuric bromide in dry ether by the interaction of mercury diphenyl and two atoms of bromine if four atoms of the halogen are used, bromobenzene and mercuric bromide result, When mercury diphenyl and mercuric bromide in alcoholic solution are heated at 120° C., and when ethylene dibromide and mercury diphenyl are heated at 200° C. this bromide is also formed. 

The reduction products from triphenylsulfonium ions depend on the electrode material and the potential [116-118]. Electrolysis of tirphenylsulfonium bromide at a mercury electrode at the potential of the first wave quantitatively yields diphenylsulfide and diphe-nylmercury. No benzene or diphenyl is formed. At potentials more negative than the second reduction wave, diphenylsulfide and benzene are formed quantitatively, provided low substrate concentrations are used. With increasing substrate concentration the yield of diphenylmercury increases at the expense of benzene. Reduction in aqueous solution at an aluminum cathode produces diphenylsulfide and some benzene addition of DMF increases the yield of benzene, as DMF is as a better hydrogen atom donor than water [117]. 

Czochralska [113] investigated the reduction of the optically active 2-phenyl-2-chloropropionic acid at a mercury cathode in acidic ethanolic solution. It was found that inversion took place during electrolytic reduction, and the yield of optically active product amounted to 77.2-92.2%. Annino and co-workers [112] investigated the electrolytic reduction on mercury of the optically active l-bromo-2,2-diphenylcyclopropanecarboxylic acid and its methyl ester, and also the reduction of l-bromo-l-methyl-2,2-diphenyl-cyclopropane in neutral, acidic, and alkaline ethanolic solutions. It was found that reduction of the acid took place with 26-35% inversion of the configuration in acidic solutions and with 31-38% retention in alkaline solutions. Reduction of methyl l-bromo-2,2-di-phenylcyclopropanecarboxylate took place with 30-56% inversion of the configuration irrespective of the composition of the solution, whereas reduction of l-bromo-l-methyl-2,2-diphenylcyclopropane took place with 21% retention. These results can be explained on the assumption that the molecule is subject to attack by electrons from the side of the halogen atom and that the whole stereochemistry of the process is determined by stereoselective reaction with proton donors of the free carbanion or of the carbanion screened by the electrode. 

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