Thermochemical studies on complex of [Sm(o-NBA)3phen]2

被引：8

作者：

Xiao Shengxiong ^{[2
]}

Zhang Jianjun ^{[1
]}

Li Xu ^{[2
]}

Li Qiangguo ^{[2
]}

Ren Ning ^{[3
]}

Li Huan ^{[2
]}

机构：

[1] Hebei Normal Univ, Expt Ctr, Shijiazhuang 050016, Peoples R China

[2] Xiangnan Univ, Dept Chem & Life Sci, Chenzhou 423000, Peoples R China

[3] Handan Coll, Dept Chem, Handan 056005, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2010年 / 28卷 / 01期

关键词：

rare earth complex; samarium chloride hexahydrate; o-nitrobenzoic acid; 1,10-phenanthroline; thermochemical;

D O I：

10.1016/S1002-0721(09)60040-5

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A ternary complex [Sm(o-NBA)(3)phen](2) (o-NBA: o-Nitrobenzoate; phen: 1,10-phenanthroline) was synthesized and characterized by elemental analysis, IR, molar conductance, and thermogravimetric analysis. The dissolution enthalpies of SmCl3 center dot 6H(2)O(s), o-HNBA(s) and phen.H2O(s) in mixed solvent (V-HCl:V-DMF:V-DMSO=2:2:1) were determined by calorimetry at 298.15 K. The enthalpy change of the reaction was determined to be Delta H-r(m)theta=252.49 +/- 1.60 kJ/mol. Using the relevant data in the literature and a thermochemical recycle according to Hess's Law, the standard molar enthalpy of formation of [Sm(o-NBA)(3) phen](2) (s) was estimated to be Delta H-f(m)theta=-4109 +/- 2 7.3 kJ/mol.

引用

页码：12 / 15

页数：4

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