氯化锌与DL-丙氨酸配位反应的热化学研究  

Thermochemical study of the coordination reaction of zincchloride with DL-alanine

作　　者：吴健[1] 黄在银[1] 

机构地区：[1]广西民族学院化学与生态工程学院,广西530006

出　　处：《化学研究与应用》2006年第1期73-75,共3页Chemical Research and Application

摘　　要：The complex of ZnCl2 with DL-alanine,Zn（Ala）2Cl2·1/2H2O,was synthesized and characterized by IR,thermogravimatric analysis and chemical analysis.The molar dissolution enthalpies of the reactants and the product were determined in H2O by classical solution calorimetry.By designing a themochemical cycle,the reaction enthalpy of zinc chloride with DL-alanine,ΔrH○-m（298.15k）=-38.95kJ.mol-1,and the standard formation enthalpy of Zn（Ala）2Cl2·1/2H2O,ΔfHθm[Zn（Ala）2Cl2·1/2H2O,s,298.15k]=-1347.32kJ.mol-1,were calculated.The complex of ZnCl2 with DL- alanine, Zn （Ala）2Cl2 · 1/2H2O, was synthesized and characterized by IR, thermogravimatric analysis and chemical analysis. The molar dissolution enthalpies of the reactants and the product were determined in H2O by classical solution calorimetry. By designing a themochemical cycle , the reaction enthalpy of zinc chloride with DL - alanine,△fHm^О-（298.15k） = - 38.95kJ. mol^-1, and the standard formation enthalpy of Zn （Ala） 2Cl2 · 1/2H2O, △fHm^θ[ Zn（Ala）2Cl2·1/2H2O, s,298.1Sk] = - 1347.32kJ. mol^-1 ,were calculated.

关 键 词：氯化锌 DL-丙氨酸 量热法 标准生成焓 

分 类 号：O642.3[理学—物理化学]