Bis-o-semiquinonato complexes of transition metals with 5,7-di-tert-butyl-2-(pyridine-2-yl)benzoxazole

被引：16

作者：

Protasenko, Natalia A. ^{[1
]}

Poddel'sky, Andrey I. ^{[1
]}

Bogomyakov, Artem S. ^{[2
]}

Somov, Nikolay V. ^{[3
]}

Abakumov, Gleb A. ^{[1
]}

Cherkasov, Vladimir K. ^{[1
]}

机构：

[1] Russian Acad Sci, GA Razuvaev Inst Organometall Chem, Nizhnii Novgorod 603950, Russia

[2] Russian Acad Sci, Int Tomog Ctr, Siberian Branch, Novosibirsk 630090, Russia

[3] Nizhniy Novgorod State Univ, Fac Phys, Nizhnii Novgorod 603950, Russia

来源：

POLYHEDRON | 2013年 / 49卷 / 01期

关键词：

Transition metals; o-Semiquinone; O-donor ligand; N-donor ligand; Magnetochemistry; X-ray analysis; VALENCE TAUTOMERISM; QUINONE COMPLEXES; COBALT COMPLEXES; REDOX ISOMERISM; X-RAY; CATECHOLATE; ANTICANCER; ESR;

D O I：

10.1016/j.poly.2012.10.016

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

New cobalt(II) (I), iron(II) (2) and manganese(II) (3) complexes of M(3,6-SQ)(2)L type containing 3,6-di-tert-butyl-o-benzosemiquinonato ligands (3,6-SQ) and 5,7-di-tert-butyl-2-(pyridine-2-yl)benzoxazole (L) were synthesized and characterized in details. Magnetic susceptibility measurements and spectroscopic studies have shown that all complexes include metal(II) in the high-spin state and two radical-anionic o-semiquinonato ligands. The antiferromagnetic ligand-ligand coupling in cobalt(II) and iron(II) complexes takes place, while manganese(II) complex demonstrates metal-ligand antiferromagnetic interactions. Molecular structure of Co(3,6-SQ)(2)L was determined by X-ray analysis. Cobalt(II) atom has a distorted trigonal prismatic environment. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：239 / 243

页数：5

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