Study of Coordination Characteristics of Some Metal Complexes of 2- Thiouracil by Infrared Spectroscopy

The infrared spectra of 2-Thiouracil (Thu) have been recorded in the region 4000-400 cm -1 . The assignments of fundamental frequencies have been proposed on the basis of assignments in related molecules. Correlation of vibrational assignments with those of related molecules have been pointed out. The metal ion interactions of Thu with Cd (II), Hg (II), Cu (II), and Zn (II) bromides have been investigated by infrared spectroscopy. The results are consistent with the bonding of ligands through sulphur in all the complexes. The vibrational frequencies of metal complexes of 2Thiouracil are correlated with the spectral data of other structurally related pyrimidine thione complexes.