Thermochemistry on coordination behavior of samaric chloride hydrate with diethylammonium diethyldithiocarbamate  

作　　者：JIAOBaojuan RENYixia CHENSanping GAOShengli ZHAOFengqi SHIQizhen 

机构地区：[1]DepartmentofChemistry,ShaanxiKeyLaboratoryofPhysico-InorganicChemistry,NorthwestUniversity,Xi＇an710069,China [2]Xi＇anModemChemistryResearchInstitute,Xi＇an710072,China [3]DepartmentofChemistry,ShaanxiKeyLaboratoryofPhysico-InorganicChemistry,NorthwestUniversity,Xi＇an710069,China

出　　处：《Rare Metals》2004年第3期203-208,共6页稀有金属（英文版）

基　　金：This work is financially supported by the National Natural Science Foundation of China (No. 20171036) and the Education Department of Shaanxi Province (No. 01JK229)

摘　　要：The complex of samaric chloride lower hydrate with diethylammoniumdiethyldithiocarbamate (D-DDC) was synthesized conveniently in absolute alcohol and dry N_2atmosphere. The title complex was identified as Et_2NH_2[Sm(S_2CNEt_2)_4] by chemical and elementalanalyses, the bonding characteristics of which was characterized by IR. The enthalpies of solutionof samaric chloride hydrate and D-DDC in absolute alcohol at 298.15 K and the enthalpies change ofliquid-phase reaction of formation for Et_2NH_2[Sm(S_2CNEt_2)_4] at different temperatures weredetermined by mi-crocalorimetry. On the basis of experimental and calculated results, threethermodynamic parameters (the activation enthalpy, the activation entropy, and the activation freeenergy), the rate constant, and three kinetic parameters (the apparent activation energy, thepre-exponential constant, and the reaction order) of liquid phase reaction of formation wereobtained. The enthalpy change of the solid-phase title reaction at 298.15 K was calculated by athermochemical cycle.The complex of samaric chloride lower hydrate with diethylammoniumdiethyldithiocarbamate (D-DDC) was synthesized conveniently in absolute alcohol and dry N_2atmosphere. The title complex was identified as Et_2NH_2[Sm(S_2CNEt_2)_4] by chemical and elementalanalyses, the bonding characteristics of which was characterized by IR. The enthalpies of solutionof samaric chloride hydrate and D-DDC in absolute alcohol at 298.15 K and the enthalpies change ofliquid-phase reaction of formation for Et_2NH_2[Sm(S_2CNEt_2)_4] at different temperatures weredetermined by mi-crocalorimetry. On the basis of experimental and calculated results, threethermodynamic parameters (the activation enthalpy, the activation entropy, and the activation freeenergy), the rate constant, and three kinetic parameters (the apparent activation energy, thepre-exponential constant, and the reaction order) of liquid phase reaction of formation wereobtained. The enthalpy change of the solid-phase title reaction at 298.15 K was calculated by athermochemical cycle.

关 键 词：inorganic chemistry THERMOCHEMISTRY microcalorimetric method samaricchloride hydrate diethylammonium diethyldithiocarbamate (D-DDC) 

分 类 号：O614.337[理学—无机化学] O642.3[理学—化学]