| Abstrakt: |
The microwave spectra from 26.5 to 39.0 GHz of eighteen isotopic species of methylgermyl bromide, 12CH3GeH2Br, 12CH3GeD2Br, and 13CH3GeH2Br for three of the naturally occurring isotopes of germane, 70Ge, 72Ge, and 74Ge, as well as the two of bromine, 79Br and 81Br, have been measured and assigned. From these data, substitution structural parameters were determined except for the methyl group. The determined parameters are: r(Ge–Br)=2.308±0.002 Å, r(Ge–C)=1.933±0.002 Å, r(Ge–H)=1.520±0.001 Å, r(C–Hs)=1.100±0.012 Å, r(C–Ha)=1.097±0.030 Å, CGeBr=107.0±0.2°, HGeH=111.5±0.1°, HGeC=112.2±0.1°, GeCHs=110.3±4.7°, and GeCHa=111.9±1.7°. From a diagnostic least-squares adjustment to fit 36 rotational constants, r0 structural parameters were also obtained. Quadrupolar coupling constants have been obtained. These results are compared to similar quantities in some related molecules. [ABSTRACT FROM AUTHOR] |
