Syntheses and characterizations of zinc(II) and copper(II) complexes with reduced Schiff base derived from salicylaldehyde and D,L-selenomethionine

Abstract

New zinc(II) and copper(II) complexes with a reduced Schiff-base ligand derived from D,L-selenomethionine and salicylaldehyde have been synthesized and characterized by elemental analysis, magnetic susceptibility, IR, and NMR measurements. The single-crystal X-ray structure of the Cu(II) complex reveals that this complex is a carboxylate-bridged dimer of dinuclear copper(II) subunits and all metal centers are five-coordinate with O₄N donor sets in distorted square-pyramidal geometries. The Cu(II) complex consists of a 1-D coordination polymer.

Keywords:

• Reduced Schiff base
• D,L-Selenomethionine
• Metal complexes
• Single-crystal X-ray structure

Acknowledgments

The support by the National Natural Science Foundation of China (20904010) and the Fundamental Research Funds for the Central Universities (2009ZM0170) is gratefully acknowledged.