Affordable Access

Publisher Website

Diphosphine derivatives—I. The vibrational spectrum of tetramethyldiphosphine disulphide (tmps) and of tmps-d12and tmps-13C4

Spectrochimica Acta Part A Molecular Spectroscopy
Publication Date
DOI: 10.1016/0584-8539(77)80020-2


Abstract The i.r. and Raman spectra of tetramethyldiphosphine disulphide (tmps) and of tmps-d 12 and tmps- 13C 4 are reported and the assignment of the skeletal modes is discussed. Raman polarization data confirm previous assignments for the PS and PP stretching modes and the symmetric PPS bend is assigned at Δν = 170 cm −1. There is no evidence of trans-gauche or trans-cis isomerism in solution: it is estimated that the molecule remains at least 99.5% in or very close to the trans form in chloroform or methylene chloride. The small dipole moment in benzene solution most probably arises from small distortions of the trans-structure, rather than trans-gauche isomerism. It has been suggested that the solid compound contains two significantly different types of tmps molecule but there is no evidence of this in the solid vibrational spectrum. Interactions between the skeletal and internal methyl vibrations are significant and are illustrated by the appreciable frequency shifts which occur in many of the skeletal modes in the deuterated compound.

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times

More articles like this

Diphosphine derivatives—IV. Vibrational data for a...

on Spectrochimica Acta Part A Mol... Jan 01, 1979

Millimeter-Wave Measurements of Vibrationally Exci...

on Journal of Molecular Spectrosc... Jan 01, 1993

Analysis of theν 2 ν 4dyad of12CH4and13CH4

on Journal of Molecular Spectrosc... Jan 01, 1989

The Infrared Spectrum of13C2D2: The Bending States...

on Journal of Molecular Spectrosc... Jan 01, 2002
More articles like this..