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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-α₂-2:17TUNGSTOPHOSPHATES Ⅲ.

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【Author】 Wang Shouguo Peng Jun Yu Ming Chen Yaguang Qu Lunyu (Department of Chemistry. Northeast Normal University, Changchun 130024)Wang Guang (Measurement Centre, Northeast Normal University, Changchun 130024)

【机构】东北师范大学化学系；东北师范大学测试中心长春130024；长春130024；长春130024；

【摘要】本文合成了通式为（NH₄）₁₇[Ln(α₂-P₂W₁₇O₆₁₂]·xH₂O（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³¹P 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α₁、α₂和β异构体间的性质进行了比较.α₂异构体的Ln-O键离子特性强于α₁异构体.更多还原

【Abstract】 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.更多还原