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Title: Mn(III) complexes of the monoprotic tridentate ONN donor 2-[2-(1H-(benzo[d]imidazol-2-yl)ethylimino)methyl]phenol as a functional mimic of haloperoxidase
Authors: Maurya, Mannar Ram
Saini P.
Haldar C.
Avecilla F.
Published in: Polyhedron
Abstract: The reaction of Mn II(ClO 4) 2 with 2-[2-(1H-(benzo[d]imidazol-2-yl)ethylimino)methyl]phenol (Hsal-aebmz, I) under aerobic conditions results in the formation of [Mn III(sal-aebmz) 2]·ClO 4 (1). In the presence of triethylamine and using MnCl 2 under aerobic conditions, I forms [Mn III(sal- aebmz-H)(sal-aebmz)] (2). These complexes are characterised on the basis of elemental and electrochemical analyses, spectroscopic (IR and UV-Vis) data and thermogravimetric studies. Single crystal X-ray analysis of 2 shows that it is stabilized in the solid state through intermolecular hydrogen bonding between the NH groups of the two benzimidazole moieties after losing one of the hydrogen atoms; the coordination sites of the ligand are the imine nitrogen of the benzimidazole ring, the azomethine nitrogen and the deprotonated phenolic oxygen. Complex 2 catalyses the oxidative bromination of styrene by H 2O 2, yielding 1,2-dibromo-1-phenylethane, 1-phenylethane-1,2-diol and 2-bromo-1-phenylethane-1-ol, acting as a functional mimic of haloperoxidases. © 2012 Elsevier Ltd. All rights reserved.
Citation: Polyhedron, 46(1): 33-40
Issue Date: 2012
Keywords: Crystal structure
Functional model of haloperoxidases
Manganese(III) complexes
Oxidative bromination of styrene
ISSN: 2775387
Author Scopus IDs: 7005255411
Author Affiliations: Maurya, M.R., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Saini, P., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Haldar, C., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247 667, India
Avecilla, F., Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, 15071 A Coruña, Spain
Funding Details: M.R.M. thanks the Department of Science and Technology (DST), Government of India, New Delhi (SR/S1/IC-32/2010) for financial support of this work. C.H. acknowledges the Council of Scientific and Industrial Research (CSIR), New Delhi for a fellowship. Bangladesh Council of Scientific and Industrial Research, BCSIR; Department of Science and Technology, Government of Kerala: SR/S1/IC-32/2010
Corresponding Author: Maurya, M.R.; Department of Chemistry, , Roorkee 247 667, India; email:
Appears in Collections:Journal Publications [CY]

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