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Fluorosilanes react with lithium salts of hydrazines to give fluorosilylhydrazines. The  19 F NMR spectra of N,N′-bis(difluoromethylsilyl)-N,N′-diphenylhydrazine and N,N′-bis-(difluoroorganylsilyl) - N, N′ - bis (trimethylsilyl)-hydrazines show an AB system for the fluorineatoms at room temperature, which results from hindered rotation about the Si–N bonds. The coalescence temperature of N,N′bis(difluoromethylsilyl)-N,N′-diphenylhydrazine was observed at + 170 °C ± 10 °C.

Notizen: Si-N-Rotationshinderung in Fluor-Silyl-Hydrazinen / Si-N-Rotational Barrier in Fluoro-Silyl-Hydrazines