Infrared spectra of the BEDT-TTF and DIMET salts with NO3- and ClO4- anions

Abstract

The infrared absorption spectra of the salts α-(BEDT-TTF)3(N03)2, (BEDT-TTF)3(Cl04)2, (DIMET)2Cl04xTHF and (DIMET)xx(N03)yx(TRF)z have been investigated in the temperature range 80-300 K. The vibrational bands in the BEDT-TTF crystals result from the coupling between electrons and a g modes of the BEDT-TTF molecule. The infrared spectra of the DIMET g salts suggest that the electron-molecular-vibration coupling is not limited to totally symmetric modes.