Abstract

Mohammad Hakimi

In this work, a new cobalt(III) complex, [Co(HEAC)2 ]ClO4 ’”2.5H2O (1), with the HEAC, 2- (2-(2-hydroxyethylamino)ethylamino)cyclohexanol, was prepared and identified by elemental analysis, FT-IR and UV-Vis spectroscopy, cyclic voltammetry and single-crystal X-Ray diffraction. The cobalt atom in the crystal structure of 1 has a distorted octahedral geometry by coordination of the four nitrogen and two oxygen atoms of HEAC. The cyclic voltammetry of 1 revealed two reversible oxidation and reduction steps, corresponding to the CoIII/CoII and CoII/Co0 couple. The complex 1 has one center of inversion on the cobalt atom and Ci symmetry. The axial Co”N bond lengths are similar to equatorial one, proving low spin status for d6 configuration and no Jahn-Teller effects. Possible six diastereomers in complexation of HEAC to cobalt atom are present in this paper.

Cobalt(III) Complex; Amino Alcohol; Cyclic Voltammetry; Ci Symmetry; X-ray Crystal Structure

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