Accession Number : AD0730529

Title :   Synthesis and Characterization of Bis(Trifluoromethyl)-Thiophosphoryl-mu-Thio-Bis(Trifluoromethyl)Phosphine and Di(Bis(Trifluoromethyl)Thiophosphoryl) Disulfide,

Corporate Author : ALBERTA UNIV EDMONTON DEPT OF CHEMISTRY

Personal Author(s) : Pinkerton,A. A. ; Cavell,R. G.

Report Date : 14 MAY 1970

Pagination or Media Count : 7

Abstract : Bis(trifluoromethyl)iodophosphine sulfide reacts with limited quantities of mercury to give the diphosphorus compound (CF3)2P(S-P(CF3)2 in which the phosphorus atoms are bridged by a sulfur atom. This same compound is better synthesized from the reaction of bis(trifluoromethyl)dithiophosphinic acid with either dimethylaminobis(trifluoromethyl)phosphine or with chlorobis(trifluoromethyl)phosphine. The mixed-valence compound is stable to air or sulfur oxidation but reacts with hydrogrn halides, halogens, and mercury. Hydrolysis by water and alkaline solutions gave 1 and 3 mol of CF3H, respectively per mole of compound. The diphosphine tetrasulfide, (CF3)2P(S)SSP(S)(CF3)2, was best prepared by bromination of salts of bis(trifluoromethyl)dithiophosphnic acid. The tetrasulfide also reacted with mercury, halogens, hydrogen halides, and hydrogen sulfide, but not with oxygen or sulfur. A simpler synthesis of (CF3)2P(S)SH is also described. (Author)

Descriptors :   (*ORGANIC PHOSPHORUS COMPOUNDS, SYNTHESIS(CHEMISTRY)), SULFUR COMPOUNDS, MERCURY, CHEMICAL REACTIONS, OXIDATION, HALOGENATED HYDROCARBONS, NUCLEAR MAGNETIC RESONANCE

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE