RAMAN, PRERESONANCE RAMAN AND ELECTRONIC-SPECTRA OF IRON(II) SACCHARINATE

The Raman spectrum of solid [Fe(Sac)2(H2O)4] . 2H2O was recorded and assigned. Some comparisons with the spectra of the related copper(II) and nickel(II) complexes were also made. The excitation profiles of the vibrational modes that show pre-resonance on excitation with laser lines within the electronic bands are reported. On this basis, and with the aid of a semi-empirical extended Huckel MO calculation, the assignment of the metal-ligand vibrations and the interpretation of the electronic spectrum could be reinforced.