稀土乙酰丙氨酸咪唑配合物的合成及光谱性质  

Synthesis and Spectral Property of the Rare Earth (Ce, Pr)Complexes with Acetyl-alanine and Imidazole

作　　者：杨一心[1] 王艳[1,2] 赵天成[3] 王党辉[1] 郝惠娣[3] 武祥龙[1] 谢志海[1] 

机构地区：[1]西北大学化学系 [2]湖北民族学院化学与环境工程学院,恩施445000 [3]西北大学化工学院

出　　处：《无机化学学报》2005年第4期578-582,共5页Chinese Journal of Inorganic Chemistry

基　　金：陕西省科技厅攻关项目(No.2001K08-G5);西安市科委攻关项目(No.GG200142);陕西省教育厅重点项目(No.99JK10);西北大学科学研究基金(No.02NW06)资助。

摘　　要：Two new coordination compounds of rare earth chloride with N-acetyl-DL-alanine and imidazole have been prepared from absolute alcohol. The general formula RE(C5H8NO3)2(C3H5N2)2Cl3·4H2O (RE=Ce, Pr) of these compounds were identified, by chemical and elemental analysis, FTIR spectra, UV spectra, 1H NMR and 13C NMR spectra, and molar conductance. The processes of thermal decomposition were identified by TG-DSC curves. The possible reaction mechanisms and the kinetics equation were investigated by comparing the kinetics parameters. The activation entropy of dehydration, as well as enthalpy values of dehydration and decomposition were obtained by DSC curve. The three-dimensional fluorescence spectra of liquid compounds were measured. The phenomenon of the up-conversion fluorescence is discussed.Two new coordination compounds of rare earth chloride with N-acetyl-DL-alanine and imidazole have been prepared from absolute alcohol. The general formula RE(C5H8NO3)(2)(C3H5N2)(2)Cl-3-4H(2)O (RE = Ce, Pr) of these compounds were identified, by chemical and elemental analysis, FTIR spectra, UV spectra, H-1 NMR and C-13 NMR spectra, and molar conductance. The processes of thermal decomposition were identified by TG-DSC curves. The possible reaction mechanisms and the kinetics equation were investigated by comparing the kinetics parameters. The activation entropy of dehydration, as well as enthalpy values of dehydration and decomposition were obtained by DSC curve. The three-dimensional fluorescence spectra of liquid compounds were measured. The phenomenon of the up-conversion fluorescence is discussed.

关 键 词：稀土配合物 N-乙酰-DL-丙氨酸 咪唑 光谱性质 

分 类 号：O627.3[理学—有机化学] O641.4[理学—化学]