SYNTHESIS AND CHARACTERIZATION OF MIXED-LIGAND COMPLEXES OF ZINC(II) WITH CYTIDINE AND AMINO-ACIDS

Mixed ligand complexes of Zn(II) with cytidine and amino acids, L-alan ine, L-phenylalanine and L-tryptophan have been synthesized and charac terized by elemental analysis, conductivity data, electronic spectra, IR, H-1 NMR and C-13 NMR spectra. In these complexes, the nucleoside a cts as a monodentate ligand involving only N(3) in metal coordination whereas the amino acids coordinate through carboxylate oxygen and amin o nitrogen. The results drawn about binding sites of these octahedral complexes are compared with the results obtained from solution studies .