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在水热条件下,K5BW12O4·nH2O,CuSO4·5H2O,2,2’-联吡啶-3,3’-二羧酸在水溶液中进行原位反应,得到一维链状化合物[CuI(2,2’-bipy)2]{[CuII(2,2’-bipy)2]2(BW12O40)}·4H2O,并对其进行了元素分析,IR,TG,CV和单晶X射线衍射表征.结果表明,化合物属于单斜晶系,P21/n空间群,晶胞参数a=1.88365(14)nm,b=2.04178(15)nm,c=2.16724(16)nm,α=90°,β=96.6720(10)°,γ=90°,V=8.2786(11)nm3,Z=4,Dc=3.255g/cm3,R1=0.0575,wR2=0.1073.化合物分子结构单元由1个铜-有机多酸阴离子{[CuII(2,2’-bipy)2]2(BW12O40)}-,1个配位阳离子[CuI(2,2’-bipy)2]+,4个结晶水分子构成.化合物分子通过氢键和π-π堆积作用形成二维超分子体系.电化学研究表明,化合物存在三步氧化还原过程.
Under hydrothermal conditions, K5BW12O4 · nH2O, CuSO4 · 5H2O, 2,2’-bipyridine-3,3’-dicarboxylic acid are reacted in situ in aqueous solution to obtain one-dimensional chain compound [CuI ’-bipy) 2] {[CuII (2,2’-bipy) 2] 2 (BW12O40)} · 4H2O and its elemental analysis, IR, TG, CV and single crystal X-ray diffraction characterization results show , The compounds belong to the monoclinic space group P21 / n with unit cell parameters a = 1.88365 (14) nm, b = 2.04178 (15) nm, c = 2.16724 (16) nm, α = 90 ° and β = 96.6720 10) °, γ = 90 °, V = 8.2786 (11) nm3, Z = 4, Dc = 3.255g / cm3, R1 = 0.0575 and wR2 = 0.1073. The molecular structure unit of the compound is composed of one copper-organic polyacid anion { [CuII (2,2’-bipy) 2] 2 (BW12O40)} -, one coordination cation [CuI (2,2’-bipy) 2] + and four crystal water molecules. And π-π stacking to form a two-dimensional supramolecular system.Electrochemical studies show that the compound exists three-step redox process.