镧系双2:17钨磷杂多配合物异构体的合成和性质研究Ⅲ.  

PREPARATION AND PROPERTIES OF THE LANTHANIDE BIS-α_2-2:17TUNGSTOPHOSPHATES Ⅲ.

作　　者：王守国[1] 彭军[1] 于明[1] 陈亚光[1] 瞿伦玉[1] 王广[2] 

机构地区：[1]东北师范大学化学系,长春130024 [2]东北师范大学测试中心,长春130024

出　　处：《无机化学学报》1993年第4期364-368,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金资助项目

摘　　要：本文合成了通式为(NH_4)_(17)[Ln(α_2-P_2W_(17)O_(61)_2]·xH_2O(Ln=La,Ce,Pr,Nd,Sm,Eu,Gd,Dy)的镧系双2:17钨磷杂多配合物纯净异构体.并用^(31)P NMR、IR、UV-Vis吸收光谱、极谱、循环伏安和磁化率等对其进行了表征.对α_1、α_2和β异构体间的性质进行了比较.α_2异构体的Ln-O键离子特性强于α_1异构体.Eight pure isomers of the formula (NH4)17 Ln(α2-P2W17O61)2 · xH2O(Ln3+=La, Ce, Pr, Nd, Sm, Eu, Gd, or Dy) were synthesized and characterized by 31P NMR, IR and UV-Vis spcctroscopy, polarography, cyclic voltammetry and their magnetic moments. The properties of α1, α2 and β isomers were compared. The ionic character of the Ln-O bonds in the α2-isomer is stronger than that in the α1,-isomer.

关 键 词：钨磷杂多酸盐 镧系元素 异构体 

分 类 号：O614.33[理学—无机化学]