Synthesis, crystal structure, electrochemistry and antioxidative activity of copper(II), manganese(II) and nickel(II) complexes containing bis( N ‐ethylbenzimidazol‐2‐ylmethyl)aniline | Zendy

Wu Huilu | Zendy; Peng Hongping | Zendy; Zhang Yanhui | Zendy; Wang Fei | Zendy; Zhang Han | Zendy; Wang Cuiping | Zendy; Yang Zaihui | Zendy

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Synthesis, crystal structure, electrochemistry and antioxidative activity of copper(II), manganese(II) and nickel(II) complexes containing bis( N ‐ethylbenzimidazol‐2‐ylmethyl)aniline

Author(s) -

Wu Huilu,

Peng Hongping,

Zhang Yanhui,

Wang Fei,

Zhang Han,

Wang Cuiping,

Yang Zaihui

Publication year - 2015

Publication title -

applied organometallic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.53

H-Index - 71

eISSN - 1099-0739

pISSN - 0268-2605

DOI - 10.1002/aoc.3313

Subject(s) - chemistry , molar conductivity , square pyramidal molecular geometry , trigonal bipyramidal molecular geometry , aniline , copper , nickel , manganese , ligand (biochemistry) , radical , electrochemistry , hydroxyl radical , superoxide , inorganic chemistry , coordination complex , crystal structure , coordination geometry , medicinal chemistry , electron paramagnetic resonance , transition metal , crystallography , metal , molecule , elemental analysis , organic chemistry , biochemistry , enzyme , receptor , hydrogen bond , physics , electrode , nuclear magnetic resonance , catalysis

Bis( N ‐ethylbenzimidazol‐2‐ylmethyl)aniline (Etbba) and its transition metal complexes, [Cu(Etbba)(Cl) 2 ]⋅DMF ( 1 ), [Mn(Etbba)(Cl) 2 ] ( 2 ) and [Ni(Etbba)(Cl) 2 ] ( 3 ), have been synthesized and characterized on the basis of elemental analysis, molar conductivity, UV–visible, infrared and NMR spectroscopies and X‐ray crystallography. The coordination environment of complex 1 can be described as distorted square‐based pyramidal, while complexes 2 and 3 each have a distorted trigonal bipyramidal geometry. Cyclic voltammograms of complex 1 indicate an electrochemically quasi‐reversible Cu 2+ /Cu + couple. In addition, the antioxidant activities of the free ligand and its complexes were investigated using the superoxide and hydroxyl radical scavenging methods in vitro . Complexes 1 , 2 , 3 are found to possess potent hydroxyl radical scavenging activity and to be better than standard antioxidants like vitamin C and mannitol. Furthermore, complexes 1 and 2 exhibit significant superoxide radical activity. Copyright © 2015 John Wiley & Sons, Ltd.

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