R. Cavell, R. Leary, A. Tomlinson
Apr 20, 1972
Citations
0
Influential Citations
10
Citations
Journal
Inorganic Chemistry
Abstract
Abstract : Trimethylsilyl esters of difluorophosphinic, -thiophosphinic, and -dithiophosphinic acids and their bis(trifluoromethyl) analogs have been prepared by one or more of four different synthetic routes and characterized by infrared and nmr spectroscopy. Their reactions with anhydrous hydrogen chloride and thermal behavior have been investigated, the esters containing a P-S-Si bridge unit being markedly less thermally stable than those possessing the P-O-Si bridge. Dimethylamine reacts with the bis(trifluoromethyl) esters to give Me3SiNMe2 and dimethylammonium salts of the phosphinic acids, but in the case of the difluoro esters the initail product Me3SiNMe2 then attacks P-F bonds in the anions F2PEE'(-) (E,E' = O,S) yielding Me3SiF and the anions F(Me2N)PEE'(-). (Author)