Synthesis, characterization and electrochemistry of unsymmetrical macrocyclic cobalt(ll) complexes derived from bis(benzyl)ethylenediimine

Abstract

Macrocyclic cobalt(ll) complexes with varying ring sizes (12-14 membered) have been synthesized by using template method with bis(benzil)ethylenediamine precursor. These complexes have been characterized by elemental analyses, conductance, IR and electronic spectra. The spectral data suggest octahedral geometry for all the complexes. Various ligand field parameters have been calculated. The CV results suggest that the cobalt complexes derived from aromatic diamines are reduced at more negative potentials.