氯化稀土甘氨酸配合物稳定常数及规律的研究  

Studies on the Stability Constants of Complexes of Triglycin-Triaquo-Rare Earth Chlorides

作　　者：刘北平[1] 罗艳红 卢基林[1] 张大顺[1] 周才华 李琳[1] 

机构地区：[1]湖南文理学院化学化工系,湖南常德415000 [2]湖南三鑫电源科技有限责任公司,湖南湘潭411300

出　　处：《湖南文理学院学报（自然科学版）》2006年第3期38-39,55,共3页Journal of Hunan University of Arts and Science(Science and Technology)

基　　金：国家自然科学基金(20373072)

摘　　要：采用pH电位法在相同条件下测定氯化稀土甘氨酸配合物RE(Gly)3Cl3·3H2O(RE=Y,La,Pr,Sm,Eu,Dy,Ho,Er,Lu)的逐级稳定常数,实验结果表明氯化稀土甘氨酸配合物的第一级稳定常数远大于第二级和第二级稳定常数.配合物的稳定性与稀土的原子序数有关.In the present work, the stability constants of complexes of rare-earth compounds with glycin RE（Gly）Cl3·3H2O（RE= La, Pr, Sm, Eu, Dy, Ho, Er, Lu, Y） were determined by potentioetric titration at 20 ℃. First stability constants of the complexes were more than second and third it. The stability of the complexes in connection with the atomic number of rare-earth.

关 键 词：稀土 甘氨酸 配合物 稳定常数 PH电位法 

分 类 号：O614.33[理学—无机化学]