摘要
通过水热合成制得了硅钨杂多酸镨化合物[H3DETA]3[H2DETA]2[Pr(S iW11O39)2].2H2O[DETA:二乙烯三胺].晶体结构解析表明:该化合物属于三斜晶系,P1-空间群,a=1.200 0(2)nm,b=2.026 1(4)nm,c=2.239 2(5)nm,α=111.60(3)°,β=92.92(3)°,γ=103.56(3)°;V=4.863 8(17)nm3,Z=2,ρ=4.152 g/cm3,μ=26.519 mm-1,F(000)=5 374.化合物中Pr3+键合两个[S iW11O39]8-构成一个[Pr(S iW11O39)2]13-多阴离子,Pr3+与两个[S iW11O39]8-阴离子的八个氧原子配位构成一个畸变的四方反棱柱.此外,多阴离子[Pr(S iW11O39)2]13-和有机分子还通过氢键形成一个大的空腔.
The title compound was prepared by hydrothermal synthesis and characterized by single crystal X-ray structural analysis for the first time. The compound was crystallized in triclinic, space group Pl with a = 1.200 0(2) nm, b =2.026 1(4) nm, c =2.239 2(5) nm, α = 111.60(3)°,β=92.92 (3)°, γ=103.56(3)°; V=4.8638(17) nm^3, Z=2, ρ=4.152g/cm^3, μ=26.519 mm^-1, F(000) = 5 374. The structure analysis shows that the Pr^3+ ion is eight-coordinated with a distorted square anti-prismatie configuration. Moreover, the polyanions [ Pr( SiWn 039) 2]^ 13 - and organic molecules form a large cavity through hydrogen bonding interaction.
出处
《化学研究》
CAS
2005年第3期24-27,共4页
Chemical Research
基金
河南省杰出人才创新工程项目
河南省自然科学基金资助项目
关键词
多金属氧酸盐
水热合成
镨
晶体结构
polyoxometalate
hydrothermal synthesis
praseodymium
crystal structure