稀土元素L-脯氨酸、甘氨酸、L-丙氨酸四元固态配合物的合成与表征  

Synthesis and Characterization of the Solid Quaternary Complexes of Rare Earths with L-Proline,L-Alanine and Glycine

作　　者：张瑞华[1] 孙元洪[1] 刘景心[2] 刘英平[2] 

机构地区：[1]天津科技大学海洋学院,天津300450 [2]内蒙古大学,内蒙古呼和浩特010021

出　　处：《稀土》2004年第3期29-31,共3页Chinese Rare Earths

基　　金：国家自然科学基金资助课题;内蒙古自然科学基金资助课题(2916002)

摘　　要：合成了6种稀土与L-脯氨酸、L-丙氨酸、甘氨酸四元固态配合物[RE(Pro)(Gly)2(Ala)2]Cl3·C2H5OH,并以热谱、红外光谱、核磁共振氢谱、质谱进行了表征。Title complexes Cl_3·CH_3CH_2OH (RE=La, Nd, Sm, Eu, Tb, Dy) were synthesized.~1HNMR spectra and the mass spectra further support the formation of the quaternary complexes.In IR spectra , υ_(as),COO^-,and υ_s,COO^- (Pro) shift to higher frequencies after the coordination , but the υ_s,COO^-of glycine and alanine hardly shift , new absorption band at 190cm^(-1) is attributed to RE-O strentching vibration . These results indicate that L-proline was coordinated to the rare earth as symmetrical bridging bidentate while glycine and L-alanine coordinated to rare earth as unsymmetrical bridge bidentate.

关 键 词：稀土配合物 L-脯氨酸 L-丙氨酸 甘氨酸 

分 类 号：O611.6[理学—无机化学]