The electronic spectra of binuclear molybdenum(II) carboxylates

Abstract

The electronic spectra of binuclear molybdenum(II) acetate, benzoate, p-fluorobenzoate, and pentafluorobutyrate show intense absorption at ≈ 30000cm^-1 which may, in part, be due to strong Mo-Mo bonding. The binuclear structure is characterized by a weak band at ≈ 23000 cm^-1 which displays extensive vibrational fine structure. A semi-empirical molecular orbital calculation is used as an aid in the interpretation of the spectra.