摘要
在水热条件下合成了新型超分子化合物(biyyH2)2(H2P2Mo5O23)·H2O,对其进行了红外光谱、拉曼光谱、紫外-可见漫反射光谱、荧光光谱和循环伏安等分析表征,X射线单晶结构分析表明,标题化合物属单斜晶系,P21/c空间群,晶胞参数α=1.679 51(7)nm,b=1.151 93(4)nm,c=1.889 08(8)nm,β=108.335(1)°,V=3.469 2(2)nm3,Z=4,Dc=2.382g/cm3.F(000)=2 408,μ=1.951mm-1,R=0.024 4,Rw=0.0721.标题化合物的杂多阴离子[P2Mo5O23]4-由5个MoO6畸变的八面体和2个PO4畸变四面体通过共顶点或共边组成;5个Mo原子近似处于同一平面,它们和2个P原子组成了一个畸变的五角双锥构型;杂多阴离子与质子化的4,4'-bipy和水分子通过氢键连成无限二维网状结构,形成超分子化合物.
A novel molybdophosphate supermolecular compound (bipyH2)2(H2P2Mo5O23). H2O has been synthesized by hydrothermal method and characterized by crystal X-ray structure analysis, IR spectrum, Raman spectrum, UV-Vis DRIS spectrum, fluorescence spectrum and CV. The crystal belongs to mono-clinic system with a space group P21/c, a=l. 679 51(7) nm, b=1. 151 93(4) nm, c=1. 889 08(8) nm, β= 108. 335(1)°,V=3. 469 2(2) nm3, Z = 4, Dc = 2. 382 g/cm3, F(000) =2408, μ=1.951mm-1, R=0.024 4, Rw = 0. 072 1. The heteropoly anion[H2P2Mo5O23]4- and protonated 4,4'-bipy are connected to a supermolecular compound by hydrogen bonds; and the anions contain five MoO6 octahedra and two PO4 tetrahedron; Mo, P atoms show a distorted pentagonal bipyramidal configuration, and the heteropoly anions are connected to a infinite planar structure with the protonated 4,4'-bipy.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第4期521-525,共5页
Chemical Journal of Chinese Universities
基金
福建省自然科学基金(E0110013)
福建省教育委员会基金(JA00137)资助.