三元配合物[Nd(C_9H_7O_2)_3(C_(12)H_8N_2)]·H_2O的热化学研究  

Thermochemical study on ternary complex of [Nd(C_9H_7O_2)_3(C_(12)H_8N_2)]·H_2O

作　　者：蒋建宏[1,2] 胡钞粟 刘卉[2] 王艳兰 肖碧源 周菊峰[1,2] 肖圣雄[1,2] 李强国[1,2] 

机构地区：[1]湘南稀贵金属化合物及其应用湖南省重点实验室,湖南郴州423043 [2]湘南学院化学与生命科学系,湖南郴州423043 [3]湘南地质勘察院实验测试分院,湖南郴州423043

出　　处：《宝鸡文理学院学报（自然科学版）》2015年第1期25-29,共5页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

基　　金：国家自然科学基金项目(21273190);湖南省科技计划项目(2013FJ3033;2012TP4021-6;2010FJ3053);湘南学院科研基金资助项目(2013YJ36;2014XJ52);湘南学院大学生科研课题(校发[2014]10号);湘南学院大学生研究性学习和创新性实验计划项目(校发[2013]15号)

摘　　要：目的制备三元配合物[Nd(C9H7O2)3(C12H8N2)]·H2O,并计算出其ΔfHΘm。方法在甲醇和无水乙醇溶液中由六水氯化钕、1,10-邻菲罗啉以及肉桂酸反应合成[Nd(C9H7O2)3(C12H8N2)]·H2O,并采用红外光谱对其表征。依照热力学原理和Hess定律设计热化学循环。在298.15K及常压下,利用恒温环境的微量热计测定六水氯化钕、1,10-邻菲罗啉、肉桂酸以及三元配合物在混合溶剂(体积比0.5mol/L HClO4∶DMF∶乙醇∶水=1.5∶2.0∶1.0∶1.0)中的溶解焓。结果与结论设计下列配位反应的热化学循环:NdCl3·6H2O(s)+3C9H8O2(s)+C12H8N2·H2O(s)=[Nd(C9H7O2)3(C12H8N2)]·H2O(s)+3HCl(l)+6H2O,求得了三元配合物[Nd(C9H7O2)3(C12H8N2)·H2O(s)]的标准摩尔生成焓:ΔfHΘm[[Nd(C9H7O2)3(C12H8N2)]·H2O(s),298.15K]=1 933.522±0.402kJ·mol-1。Objective—To synthesizeternary complex[Nd(C9H7O2)3(C12H8N2)]·H2O,study its thermochemical properties and to calculate theΔfHΘm.Methods—Ternary complex [Nd(C9 H7O2)3(C12H8N2)]·H2O(s)was synthesized with six-water neodymium chloride,1,10-phenanthroline and cinnamic acid in methanol and anhydrous ethanol solution,and then characterized by IR.A thermochemical cycle of reaction was designed in terms of the principle of thermodynamics and Hess' law.In addition,At 298.15 Kand normal pressure,the dissolution enthalpies of NdCl3·6H2O(s),3C9H8O2(s),C12H8N2·H2O(s)and [Nd(C9H7O2)3(C12H8N2)]·H2O(s)were mensurated in a mixed solvent(volume ratio of 0.5mol/L perchloric acid,DMF,absolute ethyl alcohol and water is 1.5∶2.0∶1.0∶1.0)with a isoperibol micro-calorimeter.Results and Conclusion—The following thermochemical cycle of coordination reaction was designed:NdCl3·6H2O(s)+3C9H8O2(s)+C12H8N2·H2O(s)=[Nd(C9H7O2)3(C12H8N2)]·H2O(s)+3HCl(l)+6H2O(l)The standard molar formation enthalpy of the ternary complex [Nd(C9H7O2)3(C12H8N2)]·H2O(s)was evaluated:ΔfHΘm[[Nd(C9H7O2)3(C12H8N2)]·H2O(s),298.15K]=1 935.219±0.402kJ·mol-1.

关 键 词：肉桂酸 l l0-邻菲罗啉 标准摩尔溶解焓 

分 类 号：O642.3[理学—物理化学]