L-半胱氨酸合锌(Ⅱ)钠的热化学  

Thermochemistry of L-cysteine complex Zn(Ⅱ) sodium

作　　者：屈景年[1] 刘义[2] 曾荣英[1] 屈松生[2] 

机构地区：[1]衡阳师范学院化学与材料学系,湖南衡阳421008 [2]武汉大学化学与分子材料科学学院,湖北武汉430072

出　　处：《化学研究与应用》2004年第3期386-387,共2页Chemical Research and Application

基　　金：湖南省教育厅资助项目

摘　　要：A complex Na2[Zn（Cys）2]·5H2O 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-1HCl,at 298.2 K. Using a thermochemistry cycle, the standard molar formation enthalpy of complex Na2[Zn（Cys）2]·5H2O has been calculated to be △fHmNa2[Zn（Cys）2]·5H2O（s）=-2828.323 kJ·mol-1.The result supplies a basic thermochemistry parameter for the further research of the complex.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 basic thermochemistry parameter for the further research of the complex.

关 键 词：L-半胱氨酸 锌 钠 热化学 配合物 量热法 标准生成焓 

分 类 号：O623.736[理学—有机化学] O642.3[理学—化学]