Thermochemical study on the Schiff base [H2salen=N,N′-bis(salicylidene) ethylendiamine] and its binuclear copper (II) complex

被引：7

作者：

Li, Chuan-Hua ^{[1
]}

Tao, Li-Ming ^{[1
]}

Xiao, Sheng-Xiong ^{[1
]}

Li, Ai-Tao ^{[1
]}

Jiang, Jian-Hong ^{[1
]}

Li, Xu ^{[1
]}

Yao, Fei-Hong ^{[1
]}

Luo, Wei-Peng ^{[1
]}

Xie, Jin-Qi ^{[1
]}

Peng, Meng-Na ^{[1
]}

Pan, Lan ^{[1
]}

Li, Qiang-Guo ^{[1
]}

机构：

[1] Xiangnan Univ, Dept Chem & Life Sci, Hunan Prov Key Lab Rare Precious Met Cpds & Appli, Chenzhou 423000, Hunan, Peoples R China

来源：

THERMOCHIMICA ACTA | 2013年 / 569卷

基金：

中国国家自然科学基金;

关键词：

Cupric acetate monohydrate; Salicylaldehyde; Ethylenediamine; Dissolution-reaction calorimeter; Standard molar enthalpy of formation; DNA; SALICYLALDEHYDE; ENTHALPIES; EFFICIENT; CLEAVAGE; SERIES;

D O I：

10.1016/j.tca.2013.07.004

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The Schiff-base ligand [H(2)salen=N,N'-bis(salicylidene) ethylendiamine] and the binuclear copper (II) complex [Cu-2(salen)(2)(mu - O)(2)] were synthesized and the structure of the complex was characterized by X-ray crystallography. Two thermochemical cycles were designed on basis of Hess's law. According to the two cycles, the dissolution enthalpies of relevant substance in the calorimetric solvent of DMF were determined by a solution-reaction isoperibol calorimeter. The measurement experiment was performed at a constant ambient temperature of 298.15 K. After that, the rationality of these two thermochemical cycles was demonstrated by UV spectra and refractive indexes. Base on the measurement results and relevant literature data, the standard molar enthalpies of formation of the Schiff base and the complex were reckoned to be: Delta H-f(m)theta[H(2)salen(s), 298.15K] = -(146.4 +/- 1.9)kJ mol(-1); Delta H-f(m)theta [Cu-2(salen)(2)(mu - O)(2)(s), 298.15 K] = -(171 +/- 8 3.9) kJ mol(-1). (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：97 / 103

页数：7

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