A dimeric copper coumarin complex:: synthesis and crystal structure of [{Cu(4-methyl-7-(salicylideneamino)coumarin)2}2]

被引：15

作者：

Aazam, Elham S. ^{[1
]}

El Husseiny, Amel F. ^{[1
]}

Hitchcock, Peter B. ^{[2
]}

Alshehri, Jemila M. ^{[2
]}

机构：

[1] King Abdulaziz Univ, Dept Chem, Girls Sect, Jeddah 21442, Saudi Arabia

[2] Univ Sussex, Sch Chem Phys & Environm Sci, Chem Lab, Brighton BN1 9QJ, E Sussex, England

来源：

CENTRAL EUROPEAN JOURNAL OF CHEMISTRY | 2008年 / 6卷 / 02期

关键词：

coumarin; Schiff base; copper(II) complex; crystal structure; ESR;

D O I：

10.2478/s11532-008-0018-3

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A binuclear copper complex [{Cu(L)(2)}(2)], C68H48Cu2N4O12C (where L is 4-methyl-7-(salicylideneamino)coumarin), has been synthesized and characterized using elemental analysis, molar conductance measurements, and infrared, ultraviolet and ESR spectrosopy. The molecular structure of title compound, determined by single-crystal X-ray diffraction studies, reveals that the two symmetric Cu(L)(2) units are associated into a dimer by rather long Cu center dot center dot center dot O bonds. The Cu(II) ions are bridged via the phenolic oxygen of one of the monomers and have distorted trigonal bipyramidal conformation geometry. Within each monomer the two methylsubstituted coumarin skeletons are trans to one another, but adopt a parallel arrangement with respect to the other monomer. Only half of the complex molecule can be found in the asymmetric unit, Z' = 0.5, the other half is generated by the symmetry centre.

引用

页码：319 / 323

页数：5

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