
%0 Journal Article
%A Bowmaker, GA 
%A Knappstein, RJ 
%A Tham, SF 
%T An infrared and Raman spectroscopic study of some Group 1B halide complexes containing an M<sub>4</sub>X<sub>4</sub> core
%J Australian Journal of Chemistry
%D 1978/10/01
%V 31
%N 10
%P 2137-2143
%K 
%R https://doi.org/10.1071/CH9782137
%U https://www.publish.csiro.au/paper/CH9782137 
%X The infrared and Raman spectra of [Et3PcuI]4 and [Et3AsCuI]4 have been measured, and bands have been assigned to vibrations of the ligand and of the Td Cu4I4 core. The far-infrared spectra show two strong T2 v(CuI) bands at about 90 and 140 cm-1, the higher frequency member of which has a Raman counterpart which shows possible longitudinal-transverse splitting. The Raman spectra also show an intense band at about 50 cm-1. Similar features have been observed in the low-frequency vibrational spectra of [Et2S]3 [CuI]4, [C5H5NcuI]4, [C5H11NAgI]4, [Et3PAgBr]4 and [Et3PagCl]4, although the last two compounds gave only a single broad band in the v(MX) region. 
