一例以[α_(2)⁃P_(2)W_(17)O_(61)]^(10-)单元和Dy^(3+)构筑的磷钨酸盐的合成、结构及荧光性质  

Synthesis structure and fluorescence property of a phosphotungstate constructed withα_(2)⁃P_(2) W_(17) O_(61)^(10-)unit and Dy^(3+)ions

作　　者：李蕊 林存萌 马驰 马鹏涛[1] LI Rui;LIN Cunmeng;MA Chi;MA Pengtao(College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,Henan China)

机构地区：[1]河南大学化学化工学院,河南开封475004

出　　处：《化学研究》2021年第6期482-487,共6页Chemical Research

基　　金：河南省大学生创新创业训练计划项目资助(202110475079)。

摘　　要：以[α_(2)⁃P_(2)W_(15)O_(56)]^(12-)为多酸前驱体与DyCl_(3)·6H_(2)O和苯甲酸反应,采用常规水溶液合成法制得了一例二聚的磷钨酸盐衍生物[TMA]_(8)[Dy(H_(2)O)_(8)]H_(3)[Dy(H_(2)O)_(2)P_(2)W_(17) O_(61)]_(2)·49H_(2)O并对其进行了X射线单晶衍射、红外光谱等结构表征以及荧光性能研究。X射线单晶衍射结果表明化合物1晶体结构为三斜晶系,P⁃1空间群。其晶胞参数为a=1.311(8)nm,b=1.808(11)nm,c=1.990(12)nm,α=93.493(2)°,β=97.394(2)°,γ=96.566(2)°,Z=1,Mr=10465.94,V=4.636(5)nm^(3),μ=22.731 mm-1,R_(1)=0.0661,wR_(2)=0.1465[I>2σ(I)]。荧光分析表明该化合物展示了稀土Dy^(3+)离子的特征发光。A dimeric phosphotungstate derivative[TMA]_(8)[Dy(H_(2)O)_(8)]H_(3)[Dy(H_(2)O)_(2)P_(2)W_(17)O_(61)]_(2)·49H_(2)O(1)was prepared by the reaction of[α2⁃P2W15 O56]12-as a precursor with DyCl_(3)·6H_(2)O,which was characterized by IR spectrum,X⁃ray structural analysis.The X⁃ray single crystal diffraction results show that compound 1 crystalizes in triclinic P⁃1 space group.Its unit cell parameter is a=1.31122(8)nm,b=1.808,44(11)nm,c=1.990,72(12)nm,α=93.493(2)°,β=97.394(2)°,γ=96.566(2)°,Z=1,Mr=10465.94,V=4.6368(5)nm^(3),μ=22.731 mm-1,R_(1)=0.0661,wR_(2)=0.1465[I>2σ(I)].Fluorescence analysis indicated that compound 1 exhibited the characteristic photoluminescence of Dy^(3+)ions.

关 键 词：稀土 多酸 晶体结构 荧光 

分 类 号：O614.341[理学—无机化学]