BARRIERS TO INTERNAL-ROTATION OF CYCLOPROPYLSILANE-D3 AND CYCLOPROPYLGERMANE FROM COMBINATION BAND SPECTRA Academic Article uri icon

abstract

  • The sum and difference bands of cyclopropylsilane-d3 in the 1400-1700 cm-1 region arising from combinations of the internal rotation with the SiD stretching mode have been recorded and analyzed. The data correspond to a barrier to internal rotation of 651 cm-1, somewhat less than the value of 694 cm-1 determined for the undeuterated species. Similarly, the combination band spectra of cyclopropylgermane in the 1950-2200 cm-1 region establish the barrier to rotation of the germyl group as 474 cm-1. These results confirm that the attachment of a silyl group to the cyclopropyl ring results in a higher barrier than would be expected from comparisons to other silanes and to methylcyclopropane and cyclopropylgermane. 1989.

published proceedings

  • JOURNAL OF MOLECULAR SPECTROSCOPY

author list (cited authors)

  • KELLY, M. B., LAANE, J., & DAKKOURI, M.

citation count

  • 10

complete list of authors

  • KELLY, MB||LAANE, J||DAKKOURI, M

publication date

  • September 1989