Bis chelate Cu(II) complexes of dafone - synthesis, structural, EPR and optical spectral studies

被引：52

作者：

Menon, S ^{[1
]}

Rajasekharan, MV ^{[1
]}

机构：

[1] Univ Hyderabad, Sch Chem, Hyderabad 500046, Andhra Pradesh, India

来源：

POLYHEDRON | 1998年 / 17卷 / 15期

关键词：

Cu(II) complexes; dafone; unsymmetric chelation;

D O I：

10.1016/S0277-5387(98)00046-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Three examples of Cu(II) complexes with dafone, Cu(dafone)(2)Br-2 (1), [Cu(dafone)(2)(H2O)(2)](NO3)(2) (2) and [Cu(dafone)(2)(H2O)(2)](ClO4)(2) (3) have been synthesized and characterized structurally and spectroscopically. All complexes show unsymmetric chelation of dafone with one Cu-N bond being much longer than the other. Powder diffuse reflectance spectra have been recorded for 1, 2 and the known complex, Cu(dafone)(2)Cl-2 (4) and correlated with the molecular g-values for this relatively new type of Cu(II) chromophore. Compounds 1 and 2 were found to be sensitive to grinding leading to additional EPR signals for 1 and changes in the X-ray powder diffraction patterns. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：2463 / 2476

页数：14

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