CO(II), NI(II), CU(II), CD(II) AND HG(II) CHELATES WITH 4-ACETYL HYDRAZONO-2-PYRAZOLIN-5-ONE(THIONE)

被引：0
|
作者：
ELGYAR, SA
ELGAHAMI, MA
ALI, AMM
IBRAHIM, SA
机构：
来源：
ANNALI DI CHIMICA | 1992年 / 82卷 / 9-10期
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中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Chelates of the title metal ions with three derivatives of 4-acetylhydrazono-2-pyrazolin-5-one(-5-thione)have been prepared. Characterization of the complexes has been accomplished by elemental analysis, molar conductance, X-ray diffraction, thermogravimetric analysis, as well as electronic and IR spectral measurements. It is Indicated that Cd(II) and Hg(II) chelates possess a tetrahedral geometry, and other metal chelates assume a distorted octahedral configuration. Values of energy of activation for the decomposition process of the complexes were found to be in the range 5.6-9.8 K cal mol-1.
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页码：539 / 548
页数：10
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