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在水热条件下合成了一个新的混合价配位聚合物{[Cu(en)2]2HPW9VIW2VWIVO40}2[Cu(en)2H2O]2·8H2O,并对其进行了元素分析,IR,UV,TG-DSC等表征.X射线单晶衍射结果表明,化合物属于单斜晶系,P21/c空间群,晶胞参数a=1.88678(12)nm,b=2.30383(14)nm,c=2.61234(16)nm,α=90°,β=95.844(1)°,γ=90°,V=11.2964(12)nm3,Z=4,Dc=3.954g/cm3,R1=0.0975,wR2=0.2041.结构测定结果表明,聚合物中杂多阴离子骨架通过氧桥相连并形成一维无限链.热性质研究表明,形成标题化合物后杂多阴离子骨架分解温度大约在600.4℃,热稳定性较母体杂多酸明显增强.
A new mixed valency coordination polymer {[Cu (en) 2] 2HPW9VIW2VWIVO40} 2 [Cu (en) 2H2O] 2 · 8H2O was synthesized under hydrothermal conditions and characterized by elemental analysis, IR, UV, TG-DSC, etc. The results of X-ray single crystal diffraction show that the compound belongs to the monoclinic space group P21 / c with a = 1.88678 (12) nm, b = 2.30383 (14) nm and c = 2.61234 16) nm, α = 90 °, β = 95.844 (1) °, γ = 90 °, V = 11.2964 (12) nm3, Z = 4, Dc = 3.954g / cm3, R1 = 0.0975, wR2 = 0.2041. The results showed that the heteropolyanions in polymer were connected by oxygen bridge and formed one-dimensional infinite chain.The thermal properties showed that the decomposition temperature of heteropolyanions was about 600.4 ℃ and the thermal stability was better than that of parent heteropolyacids Significantly enhanced.