一种新颖钒氧酸盐晶体(H_2en)_3V_(10)O_(28)·5H_2O的合成、晶体结构及表征

Synthesis,Characterizations and Crystal Structure of a Novel Polyoxovanadate(H_2en)_3V_(10)O_(28)·5H_2O

通过传统常温溶液挥发法得到一种新颖钒氧酸盐化合物(H2en)3V10O28·5H2O(en=(CH2NH2)2乙二胺),并对其进行X射线单晶衍射、红外和热重等性质表征。结构解析数据如下:单斜晶系,C2/c空间群,a=2.0250(3)nm,b=1.7193(2)nm,c=1.05376(13)nm,α=90.00°,β=103.615(2)°,γ=90.00°,V=3.5655(8)nm3。晶体由一个钒十多酸阴离子骨架[V10O28]6-、三个游离的质子化乙二胺阳离子和五个游离水分子构成。

A novel polyoxovanadate compound,（H2en）3V10O28·5H2O（en=（CH2NH2）2）was synthesized in aqueous solution from NH4VO3,H3PO3,Cu（Ac）2H2O and en and characterized by elemental analyses and IR spectroscopy.X-ray structure analysis results show that it belongs to monoclinic system space group C2/c,a= 2.0250（3）nm,b = 1.7193（2）nm,c = 1.05376（13）nm,α = 90.00°,β=103.615（2）°,γ =90.00°,V =3565.5（8）nm3.The molecular structure of（H2en）3V10O28·5H2O consists of one decavanadate cluster anion[V10O28]6-,three free protonated ethylenediamine cations[H2en]2＋and five free water molecules.