Microwave spectrum and molecular structure of trichloro germane

Abstract

From measurements of the pure rotational transitions in trichloro germane, the rotational constants B₀ (in megacycles/sec) for the various isotopic modifications of the molecule were found to be: 2172.75 for HGe⁷⁰Cl₃³⁵, 2169.26 for HGe⁷²Cl₃³⁵, 2165.84 for HGe⁷⁴Cl₃³⁵, 2063.74 for HGe⁷⁰Cl₃³⁷, 2060.43 for HGe⁷²Cl₃³⁷, and 2057.20 for HGe⁷⁴Cl₃³⁷. The calculated structure from the above data for the molecule in the ground state is: d_GeH=1.55± 0.04A, d_GeCl=2.1139± 0.0010A, and ∃ClGeCl=108^° 17'± 12'. Rotational lines for the molecule when it is in the two excited GeCl₃ deformation vibrations are also measured and the corresponding molecular structures calculated.