%A ZHAO Yanru;WANG Hongsheng %T Characteristics of [Cu(Gly-Gly)(Im)]·2H2O with Its Crystal structure Synthesis and Thermochemical %0 Journal Article %D 2013 %J Science & Technology Review %R 10.3981/j.issn.1000-7857.2013.08.009 %P 62-66 %V 31 %N 8 %U {http://www.kjdb.org/CN/abstract/article_10205.shtml} %8 2013-03-18 %X Complex [Cu(Gly-Gly)(Im)]·2H2O(s) was prepared by mixing the solution of copper sulfate pentahydrate, glycylglycine and imidazole. The crystal structure of [Cu(Gly-Gly)(Im)]·2H2O was determined by X-Ray single crystal diffraction. The crystal belongs monoclinic with space group P21/n and unit-cell parameters are a=1.0213(6)nm, b=0.7023(4)nm, c=1.5911(9)nm, β=102.393(9)°, V=1.1147(11)nm3, and Z=4, respectively. The dissolution enthalpies of CuSO4·5H2O(s)+Gly-Gly(s)+Na2SO4(s), Im(s) and [Cu(Gly-Gly) (Im)]·2H2O(s), 2NaHSO4·H2O(s) have been determined in 2mol/L HCl solution by the classical solution calorimetry. According to Hess law, a thermochemical cycle is designed. By calculation, the reaction enthalpy of CuSO4·5H2O(s)+Gly-Gly(s)+Im(s)+Na2SO4(s)=[Cu(Gly-Gly)(Im)]·2H2O(s)+2Na·HSO4·H2O(s)+H2O(l) is calculated, ΔrHmθ(298.15K)=(36.763,4±1.132,5)kJ/mol, and furthermore the standard formation enthalpy of [Cu(Gly-Gly)(Im)]·2H2O(s) has also been calculated, ΔrHmθ{[Cu(Gly-Gly)(Im)]·2H2O(s), 298.15K}=(-1,770.3±1.4)kJ/mol.