Vibrational Spectra and Normal Coordinate Calculations for Trimethyiarsine–Borane
- 1 May 1977
- journal article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 50 (5) , 1287-1294
- https://doi.org/10.1246/bcsj.50.1287
Abstract
Studies were carried out on the infrared spectra (33–4000 cm−1) of eight isotopic trimethylarsine–boranes, (CH3)3AsBH3, (CH3)3As10BH3, (CH3)3AsBD3, (CH3)3As10BD3, (CD3)3AsBH3, (CD3)3As10BH3, (CD3)3AsBD3, and (CD3)3As10BD3, in the solid state at low temperature, and on the Raman spectra (0–4000 cm−1) in the solid state and in solution of dichloromethane at room temperature. The spectra were interpreted on the basis of C3V molecular symmetry, complete assignments for all fundamentals except the internal torsion being made. Normal coordinate calculations were carried out utilizing a symmetry force field in order to confirm the assignments. One of the methyl rocks was found to be mixed with the borane rock, making the assignments of these frequencies complicated. The As–B and As–C force constants were found to have the values 1.849 and 3.087 mdyn/Å, respectively.Keywords
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