bis(nicotinamide) and bis(N,N-diethyl nicotinamide) p-hydroxybenzoate complexes of Ni(II), Cu(II) and Zn(II) -: Spectrothermal studies

被引：34

作者：

Icbudak, H ^{[1
]}

Heren, Z

Kose, DA

Necefoglu, H

机构：

[1] Ondokuz Mayis Univ, Fac Arts & Sci, Dept Chem, TR-55139 Kurupelit, Turkey

[2] Kafkas Univ, Fac Arts & Sci, Dept Chem, Kars, Turkey

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2004年 / 76卷 / 03期

关键词：

diethylnicotinamide; metal complexes; nicotinamide; p-hydroxybenzoato; thermal decomposition;

D O I：

10.1023/B:JTAN.0000032269.12381.42

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The mixed-ligand p-hydroxybenzoate complexes of Ni(II), Cu(II) and Zn(II) with nicotinamide and N, N-diethylnicotinamide were synthesized and characterized by elemental analysis, magnetic susceptibility measurements and mass spectrometry. The thermal behavior of the complexes was studied by simultaneous TG, DTG and DTA methods in static air atmosphere. The infrared spectral characteristics of the complexes are also discussed. The complexes contain two water molecules, two p-hydroxybenzoato (p-hba) and two nicotinamide (na) (or diethylnicotinamide (dena)) ligands per formula unit. In these complexes, all ligands are coordinated to the metal ion as monodendate ligands. In Zn(II)-na and Cu(II)-dena complexes, the p-hydroxybenzoate behaves as bidentate chelating ligand through carboxylic oxygen atoms. The decomposition pathways and the stability of the complexes are interpreted in the terms of the structural data. The final decomposition products were found to be the respective metal oxides.

引用

页码：837 / 851

页数：15

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