%A 赵艳茹;王宏胜 %T [Cu(Gly-Gly)(Im)]·2H2O的合成、晶体结构及热化学性质 %0 Journal Article %D 2013 %J 科技导报 %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 以五水硫酸铜、甘氨酰甘氨酸(Gly-Gly)、咪唑(Im)为原料,制备了甘氨酰甘氨酸咪唑铜配合物,通过X射线单晶衍射测定了配合物的结构。该晶体属单斜晶系,P21/n空间群,a=1.0213(6)nm,b=0.7023(4)nm,c=1.5911(9)nm,β=102.393(9)°,V=1.1147(11)nm3,Z=4。用溶解量热法分别测定了CuSO4·5H2O(s)+Gly-Gly(s)+Na2SO4(s)、Im(s)和[Cu(Gly-Gly)(Im)]·2H2O(s)、NaHSO4·H2O(s)在2mol/L HCl中的溶解焓。根据Hess定律设计了一个热化学循环,计算得到CuSO4·5H2O(s)+Gly-Gly(s)+Im(s)+Na2SO4(s)=[Cu(Gly-Gly)(Im)]·2H2O(s)+2NaHSO4·H2O(s)+H2O(l)的反应焓ΔrHmθ (298.15K)=(36.7634±1.1325)kJ/mol,进而求出[Cu(Gly-Gly)(Im)]·2H2O(s)的标准生成焓ΔrHmθ{[Cu(Gly-Gly)(Im)]·2H2O(s), 298.15K}=(-1770.3±1.4)kJ/mol。