PREPARATION, THERMAL-BEHAVIOR AND SPECTROSCOPIC PROPERTIES OF SEVERALMONONUCLEAR COPPER(II) COMPLEXES OF URIDINE AND CYTIDINE

By reacting different copper(II) salts with uridine and cytidine in et hyl acetate, several mononuclear copper(II) complexes have been obtain ed. The complexes are pale in colour and exhibit hygroscopic behaviour . Both nucleosides coordinate in molecular form through a carbonyl gro up and through the nitrogen atom of the pyrimidine ring for uridine an d cytidine, respectively, resulting in a weak ligand field. The spectr oscopic data of the complexes and their thermal study using TG and DSC techniques are reported.