期刊论文

中文

化学研究与应用

1004-1656

2004

16

3

386-387

10.3969/j.issn.1004-1656.2004.03.031

湖南省教育厅资助项目；

本校为第一机构

氨基酸与金属微量元素形成的配合物广泛存在于动植物体中并参与许多生命过程。我们在前文~[1，2]基础上制备了Na_2[zn(Cys)_2]·5H20，通在298．2K用具有恒定温度环境的反应热量计~[3]测定了反应物和生成物在4 mol·L-1HCl溶液中的溶解焓，过热化学循环计算出配合物的标准生成焓△_fH_m~⊙(Na[Cys)_2]·5H_20，s)=一2828．323 kJ·mol~(-1)。

A complex Na_2[Zn(Cys)_2]·5H_2O was synthesized and the composition of the complex was determined by chemical and thermogravimatric and infrared analysis. The molar dissolution enthalpy of the reactants and products were measured by classical solution calorimetry, the calorimetric solvent is 4 mol·L~(-1)HCl,at 298.2 K. Using a thermochemistry cycle, the standard molar formation enthalpy of complex Na_2[Zn(Cys)_2]·5H_2O has been calculated to be △_fHmNa_2[Zn(Cys)_2]·5H_2O(s)=-2828.323 kJ·mol~(-1).The result supplies a bas...