Synthesis, characterization, and crystal structures of a pair of Copper(II) and Zinc(II) complexes derived from 2-bromo-4-chloro-6-[(2-isopropylaminoethylimino) methyl] phenol

A pair of new structurally similar mononuclear Schiff base copper(II) and zinc(II) complexes, [CuL2]center dot 2ClO(4) (1) and [ZnL2(ClO4)(2)] (2) (L = 2-bromo-4-chloro-6-[(2-isopropylaminoethylimino) methyl] phenol), have been synthesized and characterized by elemental analysis, IR and single crystal X-ray diffraction. Each Cu atom in ( 1) is four-coordinated by two phenolate O and two imine N atoms from two Schiff base ligands, forming a square-planar coordination. Each Zn atom in ( 2) is six-coordinated by two phenolate O and two imine N atoms from two Schiff base ligands, and by two O atoms from two perchlorate anions, forming an octahedral coordination. The different metal perchlorate salts used in the preparation of the complexes with the Schiff base ligand can result in the similar structures of the final products.