Co(II), Ni(II) and Cu(II) complexes of some new azocoumarin derivatives

被引：0

作者：

Mawgoud, AMA ^{[1
]}

Mostafa, HM ^{[1
]}

Khafagi, ZA ^{[1
]}

Ibrahim, SA ^{[1
]}

机构：

[1] UNIV ASSIUT,FAC SCI,DEPT CHEM,ASSIUT,EGYPT

来源：

BULLETIN OF THE POLISH ACADEMY OF SCIENCES-CHEMISTRY | 1996年 / 44卷 / 03期

关键词：

metal-azocoumarin complexes; isolation and characterization; dyes;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The 3d transition metal ion [Co(II), Ni(II) and Cu(II)] complexes of some new azocoumarin derivatives have been isolated and characterized by elemental analysis, conductance, electronic and IR spectra. These dyes express a high tendency towards complex formation with the monovalent anion of L-1-L-4 and the neutral molecules of L-5 coordinated to the metal ion as bidentate ligands. The molecular formula of the 1 : 1 complexes is suggested to be [MLCl(H2O)(3)]X or [MLCl2(H2O)(2)], respectively. The different bands observed in the visible spectra of ethanolic solutions of the complexes have been assigned to the possible electronic transition type (L --> MCT and d-d). It is suggested that the complexes studied have a distorted octahedral geometry.

引用

页码：179 / 187

页数：9

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