1H- und 29Si-kernresonanzspektroskopische Charakterisierung der Anionen ⊖SiH3·n(SiH3)n / 1H and 29Si NMR Characterisation of the Anions⊖SiH3·n(SiH3)n

Abstract

KSiH3 in HMPT and monoglyme solutions has been investigated by 1H and 29Si NMR spectroscopy; chemical shifts and coupling constants have been measured. The polysilyl anions H3SiSiH2 ⊖, (H3Si)2SiH⊖ and (H3Si)3Si⊖ have been prepared (a) from SiH3 ⊖ with excessive SiH4, (b) from SiH3 ⊖ and Si3H8 and (c) from K and Si2H6 or Si3H8 in HMPT. They have been identified by 1H NMR and IR spectroscopy, and their structures are deduceable from the spectral data.