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  • Synthesis, characterization and electrochemical study of synthesis of a new Schiff base (H₂cddi(t)butsalen) ligand and their two asymmetric Schiff base complexes of Ni(II) and Cu(II) with NN'OS coordination spheres.

Synthesis, characterization and electrochemical study of synthesis of a new Schiff base (H₂cddi(t)butsalen) ligand and their two asymmetric Schiff base complexes of Ni(II) and Cu(II) with NN'OS coordination spheres.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (2012-08-29)
Saeid Menati, Azadeh Azadbakht, Abbas Taeb, Ali Kakanejadifard, Hamid Reza Khavasi
ABSTRACT

A novel Schiff base (H(2)cddi(t)butsalen) ligand was prepared via condensation of Methyl-2-{N-(2'-aminoethane)}-amino-1-cyclopentenedithiocarboxylate(Hcden) and 3,5-di-tert-butyl-2-hydroxybenzaldehyde. The ligand and Ni(II) and Cu(II) complexes were characterized based on elemental analysis, IR, (1)H NMR, (13)C NMR, UV-Vis spectrometry and cyclic voltammetry. The structure of copper{methyl-2-{N-[2-(3,5-di-tert-butyl-2-hydroxyphenyl)methylidynenitrilo]ethyl}amino-1-cyclopentedithiocarboxylate has been determined by X-ray crystallography. The X-ray results confirm that the geometry of the complex is slightly distorted square-planar structure. The copper(II) ion coordinates to two nitrogen atoms from the imine moiety of the ligand, a sulfur atom the methyl dithiocarboxylate moiety and phenolic oxygen atom.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
3,5-Di-tert-butyl-2-hydroxybenzaldehyde, 99%
Sigma-Aldrich
N,N′-Bis(salicylidene)ethylenediamine, 98%