Vibrational Spectra and Structure of Organogermanes. IV. Normal Vibrations and Free Rotation in Phenylgermane
- 15 October 1968
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 49 (8), 3422-3441
- https://doi.org/10.1063/1.1670616
Abstract
The infrared spectra of liquid phenylgermane, phenylgermane‐d3, phenylgermane‐d5, and phenylgermane‐d8 have been recorded from 4000–33 cm−1. The Raman spectra of the liquids have also been recorded and depolarization values have been measured. The vapor‐phase spectra show that the germyl group is freely rotating for these molecules. Thus, the local symmetry of the phenyl ring is and the vibrations have been assigned according to this symmetry. The effective symmetry of the GeH3 and GeD3 groups is essentially . All spectra have been interpreted in detail, and the 39 fundamental vibrations have been assigned based on previous assignments of benzene and its isotopic derivatives, depolarization ratios, and vapor‐phase infrared band contours. The assignments are shown to be consistent by means of the Teller–Redlich product rule and by application of the sum rule. The free rotation of the germyl group shows that the sixfold barrier to internal rotation around the C–Ge bond is negligibly small.
Keywords
This publication has 20 references indexed in Scilit:
- The vibrational spectra and structure of organogermanes—II. C6D5GeCl3Spectrochimica Acta Part A: Molecular Spectroscopy, 1968
- Infrared and Raman Spectra of C6H5SiCl3, C6H5GeCl3, and C6H5SnCl3The Journal of Chemical Physics, 1966
- Infrared spectra of organogermanesJournal of Organometallic Chemistry, 1965
- Infrared and Raman Spectra of α,α,α-Trichlorotoluene, C6H5CCl3The Journal of Chemical Physics, 1965
- The vibrational spectra and assignments of nitrobenzene, phenyl isocyanate, phenyl isothiocyanate, thionylaniline and anisoleSpectrochimica Acta, 1961
- Factors Influencing the Resonance Contribution of an Expanded Valence Shell. A Comparison of the Electrical Effects of the Triphenylsilyl and Triphenylgermanyl Groups on an Aromatic RingJournal of the American Chemical Society, 1956
- Electric Moments and Structures of Organosilicon Compounds. II. The Aromatic Carbon-Silicon Bond1,2Journal of the American Chemical Society, 1953
- The Conjugative Ability of the Trimethylsilyl GroupJournal of the American Chemical Society, 1953
- Dipole Moments of Aromatic Derivatives of TrimethylsilaneJournal of the American Chemical Society, 1951
- The Far Infrared Spectrum of Water VaporPhysical Review B, 1937