Infrared and Raman properties of [M(dmit)(2)] (M=Ni, Pd) based compounds

The Raman spectra of [M(dmit)(2)](-n) (dmit = 1,3-dithiole-2-thione-4,5-dit hiolato, M = Ni, Pd; 0 less than or equal to n less than or equal to 2) bas ed complexes with different cations were studied. It was found that the ani on A(g) modes frequencies correlate linearly with its charge, In the polari zed reflectance spectra of the 1:1, [NBu4][Ni(dmit)(2)] salt the intra- and intermolecular electronic transitions as well as the vibronic bands were a ssigned. Electron-molecular vibration coupling constants have been evaluate d using the dimer model.