The reactions of some silylamines with carbon dioxide and related molecules

Abstract

Trisilylamine and N-methyldisilylamine do not react with carbon dioxide, carbon disulphide, or carbon oxysulphide at up to 100° and pressures up to 30 atmospheres. NN-Dimethylsilylamine combines with carbon dioxide to give silyl NN-dimethylcarbamate, and with carbon disulphide to give silyl NN-dimethyldithiocarbamate; with carbon oxysulphide, a compound is produced, formulated as O-silyl NN-dimethylmonothiocarbamate, whose n.m.r. spectrum indicates that rotation about the Me₂N–C bond is restricted.