The hydrazidosilanes Ph2Si (NHNMe2) 2 (1), Me2Si (NHNMe2) 2 (2), PhSi (NHNMe2) 3 (3), MeSi (NHNMe2) 3 (4), PhClSi (NHNMe2) 2 (5), MeClSi (NHNMe2) 2 (6), Me2ClSi (NHNMe2)(7), MeClHSi (NHNMe2)(8), MeHSi (NHNMe2) 2 (9), Me2HSi (NHNMe2)(10), Me2NN [HSi (NHNMe2) 2] 2 (11) and Si (NHNMe2) 4 (12) have been prepared by the reaction of the corresponding chlorosilanes with N, N-dimethylhydrazine. Some of the ...