Ammonium salts of silanethiol and silaneselenol
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 3,p. 359-364
- https://doi.org/10.1039/dt9720000359
Abstract
Trisilylamine reacts with H2Y (Y = S or Se) at room temperature, giving (SiH3)2Y and solid equimolar adducts of ammonia and SiH3Y formulated from their i.r. spectra as NH4 +(YSiH3)–; N-methyldisilylamine and N-dimethylsilylamine react similarly but more rapidly. Reactions of the ammonium salts with Mel, with Me3SiCl, with GeH3Br, and with PF2Br are described. With acetyl chloride, the esters MeC(O,Y)·SiH3 are formed; n.m.r. spectra indicate that in these compounds there is intramolecular exchange of SiH3 between O and Y that is rapid at room temperature but slow at temperatures below –50°. When Y = S, the predominant isomer is MeC(:S)·O·SiH3; when Y = Se, the ratio of isomers CH3·C(:O)·Se·SiH3:MeC(:Se)·O·SiH 3 is ca. 2·5.Keywords
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