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利用水热方法合成了一种基于双Dawson多阴离子和质子化的4,4′-联吡啶阳离子构筑的化合物[4,4′-bpyH2]5H2[α-P2W18O62]2·4H2O,并经IR光谱、元素分析、热重分析和X射线单晶衍射等测试技术进行了表征.标题化合物属于三斜晶系,P墿空间群,晶胞参数:a=1.35373(5),b=2.24256(13),c=2.73282(11)nm,α=79.890(13),β=77.568(8),γ=80.349(11)°,V=7.9029(6)nm3,Z=2,Dc=4.031g/cm3,GOOF=1.049,R1=0.0674,wR2=0.1434.结构分析结果表明,标题化合物分子由5个质子化的4,4′-联吡啶阳离子、2个H+离子、2个饱和Dawson结构多阴离子[P2W18O62]6-和4个结晶水分子组成.
A compound [4,4’-bpyH2] 5H2 [α-P2W18O62] 2.4H2O based on double Dawson polyanion and protonated 4,4’-dipyridyl cation was synthesized by hydrothermal method and characterized by IR spectra , Elemental analysis, thermogravimetric analysis and single crystal X-ray diffraction.The title compounds belong to the triclinic system, P 墿 space group with unit cell parameters of a = 1.35373 (5), b = 2.24256 (13) , c = 2.73282 (11) nm, α = 79.890 (13), β = 77.568 (8), γ = 80.349 (11) °, V = 7.9029 (6) nm3, Z = 2, Dc = 4.031 g / cm3, GOOF = 1.049, R1 = 0.0674, wR2 = 0.1434. The structural analysis showed that the title compound consists of 5 protonated 4,4’-dipyridyl cation, 2 H + ions and 2 saturated Dawson structure polyanions [P2W18O62] 6- and 4 crystal water molecules.