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采用CoCl2·6H2O、4,4’-联吡啶和NH4VO3,以H2O作溶剂(摩尔比1∶2∶2∶1950)在170℃下水热反应合成无机-有机杂化化合物Co(μ2-bpy)V2O6(bpy=4,4’-联吡啶),经单晶X射线衍射测定其晶体结构.此晶体属三斜晶系,空间群为Pī,晶胞常数a=0.81599(7)nm,b=0.85826(7)nm,c=1.02031(8)nm,α=87.111(2)°,β=75.305(2)°,γ=74.784(2)°,Z=2.Co(μ2-bpy)V2O6是无机的双金属氧化物层,犤Co2V4O12犦n通过有机的桥式配体μ2-bpy以N-Co配位键桥联而成.晶体的三维共价结构含有多种开放式孔道,其中最大孔道的尺寸为0.5nm×0.7nm.漫反射光谱研究表明,此晶体具有约2.0eV的光学能隙,属于半导体,在420℃以下是热稳定的.
The inorganic-organic hybrid compound Co (μ2-bpy) V2O6 was synthesized by the hydrothermal reaction at 170 ℃ using CoCl2 · 6H2O, 4,4’-bipyridine and NH4VO3 with H2O as solvent (molar ratio of 1: 2: 2: (bpy = 4,4’-bipyridine) and its crystal structure was determined by single crystal X-ray diffraction. The crystal belongs to triclinic system with space group Pī, unit cell constant a = 0.81599 (7) nm and b = 0.85826 (7) nm, c = 1.02031 (8) nm, α = 87.111 (2) °, β = 75.305 (2) °, γ = 74.784 Bismuth Co2V4O12 犦 n is bridged by the organic bridge ligand μ2-bpy with N-Co coordination bonds.The crystal’s three-dimensional covalent structure contains a variety of open channels, of which the largest channel The size of 0.5nm × 0.7nm diffuse reflectance spectroscopy studies have shown that this crystal has an optical energy gap of about 2.0eV, belonging to the semiconductor, below 420 ℃ is thermally stable.