Microwave Spectrum of (SiH3)2X, X = O,S, r0-Structure, Molecular Electric Dipolemoment and Barrier to Internal Rotation of Disilylsulfide

Author:

Dössel K. F.1,Sutter D. H.1

Affiliation:

1. Abteilung Chemische Physik im Institut für Physikalische Chemie, Christian-Albrechts-Universität Kiel

Abstract

Abstract The rotational spectrum of SiH3-S-SiH3 in its vib-torsional ground state has been investigated in the frequency range between 8 and 40 GHz. From the absolute frequencies and torsional splittings a rigid-top-rigid-frame r0-structure could be derived. The molecular electric dipole moment was determined from the second order Stark effect of some AA-species rotational transitions. The analysis of the microwave spectrum of the related molecule SiH3-O-SiH3 was yet unsuccessful. However several features of the observed spectrum rend support to the idea of a “quasi-linear” double rotor molecule with a relatively low energy hump for the linear configuration of the Si-O-Si-chain.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics

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