Hydride and fluoride transfer reactions accompanying nucleophilic substitution of pentacoordinate silicon

Nucleophilic substitution reactions of ClSi(R'-NCH2CH2)3N with amide anions help synthesize aminoazosilatranes of the type R2NSi(R'NCH2CH2)3N. The reaction mechanisms are affected by the equatorial NR' functionalities and are accompanied by hydride and fluoride transfer reactions, with the nucleophile being substituted at the pentacoordinate silicon. The formation of reaction products is influenced by stereoelectronic factors, the nature of nucleophilic reagents and reaction conditions.