期刊论文

中文

衡阳师范学院学报

1673-0313

2002

23

3

7-10

10.13914/j.cnki.cn43-1453/z.2002.03.002

本校为第一机构

合成了氨基酸与La3+形成的三元混配体配合物,通过红外光谱分析、热重分析和化学分析,确定了配合物的组成;用溶解量热法测定了配合物和反应物分别在2mol·L-1HCl中的溶解焓,根据热化学循环得出配合反应焓:△rHθm=-499.62kJmol-1,根据实验结果和文献数据计算出混配合物的标准摩尔生成焓为△fHθm[La(Glu)(Arg)Cl3·2H 2O,s,298.2k]=-6552.15kJ mol-1.

A new complexes of amino ac id with La 3+ have been synthesized,and composition of the complexes were det ermined by infrared spectra analysis,chemical analysis,thermogravimetric analysi s;and the molar dissolution enthalpy was determined about the reactans and produ cts of the coordination reaction in 2molL -1 HCl at 298 2k,According to th e thermochemistry cycle,enthalpy of the coordination reaction has been determine d.And the standard formation enthalpy of complexes was caculated:△...