A mononuclear cobalt(III) complex and its catecholase activity

Merry Mitra; Pallepogu Raghavaiah; Rajarshi Ghosh

doi:10.1039/C4NJ01587H

A mononuclear cobalt(III) complex and its catecholase activity

Merry Mitra,^a Pallepogu Raghavaiah^b and Rajarshi Ghosh*^a

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^a Department of Chemistry, The University of Burdwan, Burdwan 713 104, India
E-mail: rajarshi_chem@yahoo.co.in
Fax: +91-342-2530452
Tel: +91 342 2533913 ext: 424

^b School of Chemistry, University of Hyderabad, Hyderabad 500 046, India

Abstract

The structural analysis of a cobalt(III) complex [Co(HL)₂](OAc)·H₂O (1) [H₂L = N-(2-hydroxyethyl)-3-methoxysalicylaldimine] reveals a tridentate chelation behaviour of the ligand H₂L having a distorted octahedral coordination environment around the cobalt(III) center with a CoN₂O₄ chromophore. 1 behaves as an effective catalyst towards the oxidation of 3,5-di-tert-butylcatechol in different solvents, viz. dichloromethane (DCM), methanol (MeOH) and acetonitrile (MeCN) to its corresponding quinone derivative in aerial oxygen. The reaction follows Michaelis–Menten enzymatic reaction kinetics with turnover numbers (K_cat), 1.46 × 10³, 1.21 × 10³ and 2.16 × 10³ h⁻¹ in DCM, MeOH and MeCN, respectively.

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Publication details

The article was received on 16 Sep 2014, accepted on 01 Oct 2014 and first published on 02 Oct 2014

Article type: Paper

DOI: 10.1039/C4NJ01587H

Author version available: Download Author version (PDF)

Citation: New J. Chem., 2015,39, 200-205

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A mononuclear cobalt(III) complex and its catecholase activity

M. Mitra, P. Raghavaiah and R. Ghosh, New J. Chem., 2015, 39, 200
DOI: 10.1039/C4NJ01587H
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A mononuclear cobalt(III) complex and its catecholase activity

Abstract

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A mononuclear cobalt(III) complex and its catecholase activity

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