Synthesis, crystal structure and catecholase activity of a Ni(II) complex derived from a tetradentate Schiff base ligand

被引：12

作者：

Basu, Pradipta Kumar ^{[1
]}

Mitra, Merry ^{[2
]}

Ghosh, Amrita ^{[1
]}

Thander, Latibuddin ^{[3
]}

Lin, Chia-Her ^{[4
]}

Ghosh, Rajarshi ^{[2
]}

机构：

[1] Durgapur Govt Coll, Dept Chem, Burdwan 713214, W Bengal, India

[2] Univ Burdwan, Dept Chem, Burdwan 713104, W Bengal, India

[3] Hooghly Mohsin Coll, Dept Chem, Chinsura 712101, Hooghly, India

[4] Chung Yuan Christian Univ, Dept Chem, Chungli 32023, Taiwan

来源：

JOURNAL OF CHEMICAL SCIENCES | 2014年 / 126卷 / 06期

关键词：

Nickel(II); Schiff base; X-ray structure; Catecholase activity; DICOPPER(II) COMPLEXES; NICKEL(II) COMPLEXES; MAGNETIC-PROPERTIES; MACROCYCLIC LIGAND; CU(II) COMPLEXES; MIMETIC ACTIVITY; RADICAL PATHWAY; MIXED-VALENCE; MONONUCLEAR; DINUCLEAR;

D O I：

10.1007/s12039-014-0742-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new nickel(1) complex [Ni(L)] (1) [H2L = 1,1'-(1E,1'E)-(propane-1,3-diylbis(azan-l-yl-1-ylidene))bis(methan-1-yl-1-ylidene)dinaphthalen-2-ol] was synthesized and X-ray crystallographically characterized. 1 crystallizes in orthorhombic crystal system with Cmc21 space group. The unit cell dimensions of the crystal are a = 30.6345(4)angstrom, b = 8.45340(10)angstrom, c = 7.75180(10)angstrom. Structural analysis reveals a tetradentate chelation behaviour of the dianionic ligand H2L having a distorted square planar geometry around Ni(II) with NiN2O2 chromophore in 1. The title complex 1 behaves as an effective catalyst towards oxidation of 3,5-ditertiarybutyl catechol (3,5-DTBC) in acetonitrile to its corresponding quinone derivative in air. The reaction follows first-order reaction kinetics with rate constant 4.28 x 10(-5) min(-1). The reaction follows Michaelis-Menten enzymatic kinetics with a turnover number of (K-cat) 140.72h(-1) in acetonitrile.

引用

页码：1635 / 1640

页数：6

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