Information on the vibrational and electronic properties of the [VO(bi
uret)(SO4)] . 3H2O complex was improved in order to gain a deeper insi
ght into the characteristics of the metal-ligand bonds. Normal Raman a
nd pre-resonance Raman studies were performed, which allowed a better
characterization of the metal-ligand modes and a thorough analysis of
the electronic spectrum. The results were also compared with theoretic
al semi-empirical molecular orbital calculations.