论文部分内容阅读
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.
(H3DETA) 3 [H2DETA] 2 [Pr (SiW11O39) 2] .2H2O [DETA: diethylenetriamine] was prepared by hydrothermal synthesis. The crystal structure analysis showed that the compound belongs to triclin A = 1.200 0 (2) nm, b = 2.026 1 (4) nm, c = 2.239 2 (5) nm, α = 111.60 (3) ° and 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- [SiW11O39] 8- constitute a [Pr (SiW11O39) 2] 13-polyanion, and Pr3 + coordinates with the eight oxygen atoms of the two [SiW11O39] 8- anions to form a distorted tetragonal antiprime. In addition, Polyanions [Pr (SiW11O39) 2] 13- and organic molecules also form a large cavity by hydrogen bonding.