Fourier-transform Raman and infrared spectra and normal coordinate analysis of the triphenyl compounds and their methyl-, methoxy- and fluoro-substituted derivatives of arsenic, antimony and bismuth

Abstract

The Fourier transform (FT)-Raman and infrared (IR) spectra of triphenyl-, perdeuterated triphenyl-, tris(2-methylphenyl)-, tris(3-methylphenyl)-, tris(2,4,6-trimethylphenyl)-, tris(2-methoxyphenyl)-, tris(3-methoxyphenyl)-, tris(3-fluorophenyl)- and tris(4-fluorophenyl)-arsine, -stibine and -bismuthine were measured in the range 3600-100 cm −1. A normal coordinate analysis was performed for all substances using a modified valence force field. This leads to an unique force field for these compounds, where only the metal depending force constants vary noticeably. It was also possible to find a relationship between the chemical nature and the position of the different substituent and the metal-carbon stretching force constant. For all substances 1H-NMR, 13C-NMR and MS data were also given.