Synthesis and spectral studies of ternary complexes of Ni(II) and dioxouranium(VI) with 2-hydroxy-l-naphthaldehyde and some amino acids

Abstract

The 1:1:1 ternary complexes of Ni(II)and dioxouranium( VI) with 2-hydroxy-1-naphthaldehyde (A) and some amino acids have been synthesized and characterized. The IR spectral data of the complexes indicate that histidine, aspartic acid and glutamic acid act as tridentate ligands while glycine, ɑ-alanine, β-alanine, valine, leucine, phenylalanine, serine and threonine act as bidentate ligands coordinating through amino nitrogen and carboxylic oxygen. The electronic spectra of the nickel(II) complexes suggest that they are octahedral. An eight coordination has been proposed for uranyl complexes also.