SYNTHESIS AND MAGNETIC-PROPERTIES OF MU-TEREPHTHALATO BINUCLEAR COBALT(II) COMPLEXES

被引：33
|
作者：
MA, SL [1 ]
LIAO, DZ [1 ]
JIANG, ZH [1 ]
YAN, SP [1 ]
XUE, FC [1 ]
WANG, GL [1 ]
机构：
[1] NANKAI UNIV,DEPT CHEM,TIANJIN,PEOPLES R CHINA
来源：
SYNTHESIS AND REACTIVITY IN INORGANIC AND METAL-ORGANIC CHEMISTRY | 1993年 / 23卷 / 02期
关键词：
D O I：
10.1080/15533179308016633
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Three Co(II)-Co(II) binuclear complexes have been synthesized, namely [Co2(TPHA)(L)4](ClO4)2 (L = 2,2'-bipyridyl (bpy), 1,10-phenanthroline (phen) and 4,4'-dimethyl-2,2'-bipyridyl (Me2bpy)), where TPHA is the terephthalato dianion. Based on IR, elemental analyses, conductivity measurements and electronic spectra, these complexes are proposed to have extended TPHA-bridged structures and to consist of two cobalt(II) ions in a distorted octahedron evironment. The temperature dependence of the magnetic susceptibility of [Co2(TPHA)(bpy)4](ClO4)2 . H2O and [Co2(TPHA)(phen)4](ClO4)2 . H2O has been studied giving the exchange integral J = -0.96 cm-1 and J = -0.93 cm-1, respectively. This indicates a weak antiferromagnetic interaction between the metal ions.
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页码：239 / 245
页数：7
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