Spectral characterization, crystal structures and biological activities of iminodiacetate ternary complexes

Shahid, M. and Anjuli, . and Tasneem, S. and Mantasha, I. and Ahamad, M.N. and Sama, F. and Fatma, K and Siddiqi, Z.A. (2017) Spectral characterization, crystal structures and biological activities of iminodiacetate ternary complexes. Journal of Molecular Structure, 1146. pp. 424-431. ISSN 222860

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Abstract

The ternary complexes with stoichiometry [M(imda)(bipy)]·6H2O (M = Cu) and [M(imda)(bipy)(H2O)]·4H2O (M = Ni, Co and Mn) where H2imda = iminodiacetic acid and bipy = 2,2′-bipyridine, are prepared and characterized to exploit as novel antimicrobial agents and SOD mimics. The chemical structures were elucidated by IR, FAB-Mass, 1H, 13C NMR, EPR and spectral techniques. Single crystal X-ray and spectral studies of the complexes (1) and (2) have confirmed a square pyramidal geometry around Cu(II) ion while a saturated six coordinate (distorted octahedral) geometry around the Ni(II), Co(II) and Mn(II) ions due to the additional coordination from water. A supramolecular network is formed by extensive H-bonding in complex (1). The supramolecular assembly in complex (1) is additionally consolidated via the existence of unusual cyclic hexameric water clusters. The antimicrobial activities for the present complexes have been examined against Escherichia coli (K-12), Bacillus subtilis (MTC-121), Staphylococcus aureus (IOASA-22), Salmonella typhymurium (MTCC-98), Candida albicans, Aspergillus fumigatus and Penicillium marneffei. The superoxide dismutase (SOD) activity of the Cu(II) complex (1) is also assessed employing nitrobluetetrazolium (NBT) assay.

Item Type: Article
Uncontrolled Keywords: Antimicrobial activities; Crystal structure; Superoxide dismutase activity; Supramolecular assembly; Ternary complexes
Subjects: Q Science > QD Chemistry
Divisions: Faculties > Faculty of Science > Department of Chemistry
Depositing User: AMU Library
Date Deposited: 05 Feb 2018 06:15
Last Modified: 05 Feb 2018 06:44
URI: http://ir.amu.ac.in/id/eprint/11100

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