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[Nd(PW_(11)O_(39))(H_2O)_3](H_2bpy)_2·4H_2O的水热合成及晶体结构

Hydrothermal Synthesis and Crystal Structure of [Nd(PW_(11)O_(39))(H_2O)_3](H_2bpy)_2·4H_2O
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摘要 采用水热法合成稀土无机有机杂化化合物[Nd(PW11O39)(H2O)3](H2bpy)2.4H2O。采用NdCl3.6H2O,(NH4)3PW12O40.3H2O,4,4'-联吡啶(bpy),和去离子水(摩尔比为4∶1∶4∶3900,pH=6)在130℃下进行水热反应3天,得到标题化合物的紫红色块状晶体,并进行了红外光谱分析,元素分析。用单晶X射线衍射法测得晶体结构,属三斜晶系,空间群为P-1,晶胞参数为:a=1.18824(9)nm,b=1.35707(10)nm,c=1.77691(13)nm,α=71.551(2)°,β=82.478(2)°,γ=80.568(2)°。该晶体由无机的共价链∞1[Nd(PW11O39)(H2O)3]4-和有机的二质子化的4,4'-联吡啶(H2bpy)2+及结晶水分子堆积而成的,是一个新的稀土磷钨酸盐无机有机杂化化合物。 A novel inorganic--organic hybrid material [Nd(PWllO39)(H2O)3](H2bpy)2·4H2O was synthesized by hydrothermal reaction of NdCl3· 6H2O,4--4'--bipyridine, (NH4)3PW12O40 · 3H2O and H2O in a molar ratio of 4 : 4 : 1 : 3900 at 130℃ for 72h,pH=6. We use infrared spectrum,EDS,elemental and single crystal analyses to obtain the structure. The compound crystallized in triclinic group P-1 ,with the cell parameters a= 1. 18824(9)nm ,b= 1. 35707(10) nm, c=1. 77691(13)nm,α=71. 551(2)°,β= 82. 478(2)°,T= 80. 568(2)°.The crystal is packed by inorganic covalent chain∞^1 [Nd PW11O39) (H2O)3]^4-and organic molecule 4,4'-- (H2bpy)^2+ ,crystal water molecule. It is a new kind of inorganic--organic hybrid compound.
出处 《稀土》 EI CAS CSCD 北大核心 2007年第5期72-76,共5页 Chinese Rare Earths
关键词 无机一有机杂化材料 稀土金属 磷钨多氧酸盐 联吡啶 水热合成 晶体结构 inorganic--organic hybrid compound rare earth metal PW polyoxometalates 4,4'--bipyridine,hy- drothermal synthesis crystal structure
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