VIBRATIONAL STUDIES OF C-13-LABELED AND S-34-LABELED BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE (ET) DONOR MOLECULE

FT-IR and FT-Raman studies of C-13- and S-34-labeled bis(ethylanedithi o)tetrathiafulvalene (BEDT-TTF or ET) electron-donor molecules were ma de, and the results are presented. Assignments for fundamental vibrati ons in ET were verified. Spectral data suggest that ET has no center o f symmetry (confirming X-ray data) and that the data can be reconciled by a D-type point group with only slight interactions occurring betwe en the four molecules per unit cell.