锌与精氨酸和甘氨酸混配合物的热化学  

Thermochemistry of Mixed Ligand Complexes of L-Arginine Acid and Glycine with Zinc Ion

作　　者：屈景年[1] 刘义[2] 屈松生[2] 

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

出　　处：《化学世界》2002年第12期633-635,共3页Chemical World

摘　　要：合成了一种新的锌氨基酸混配体配合物并用具有恒定温度环境反应热量计测定了配合物和反应物在 2 98.2 K条件下溶解在 2 mol/L HCl溶液中的溶解焓。由设计的热化学循环得出配合反应焓 :ΔγHθm =3 8. 0 0 k J/mol,根据热化学原理计算出配合物的标准摩尔生成焓 ΔfHθm,[Zn.Arg.Gly] SO4.4 H2 O( s) =- 3 2 6 1 .40 kA new complex of L-arginine acid and glycine with zinc was synthesized and the molar dissolution enthalpy of the reactants and the product have been measured by classical solution calorimetry. The enthalpy of the coordination reaction was measured in 2 mol/L HCl at 298.2 K by a thermochemical cycle, and the standard molar enthalpy of formation of the complex has been calculated to be: Δ_fH θ_ m,[zn.Arg.Gly]SO_4.4H_2O(s)=-3261.40 kJ/mol.

关 键 词：锌 精氨酸 甘氨酸 混配合物 热化学 硫酸锌 氨基酸 量热法 标准生成焓 人体 微量元素 

分 类 号：Q581[生物学—生物化学]