在水热条件下利用间苯二乙酸,4,4'-二联吡啶和硝酸镉反应生成配位聚合物{[Cd(pda)(4,4'-bipy)(H2O)]·H2O｝n(1)(1,3-H2pda=间苯二乙酸、4,4'-bipy=4,4'-二联吡啶).其晶体结构采用红外光谱、热重分析及单晶X射线衍射等手段进行了表征.结构分析表明该配位聚合物属三斜晶系,空间群为Pī;晶体学参数:a=0.7991(4)nm,b=1.1514(5) nm,c=1.2075(5) nm;α=107.352(6)°,β=97.505(6)°,γ=108.925(6)°,V=970.8(8) nm3.其基本结构单元由两个Cd(Ⅱ)离子、两个间苯二乙酸根、四个4,4'-二联吡啶、两个水分子组成.有趣的是所有的闭合环[Cd2(pda)2]通过两线状4,4 '-二联吡啶支撑连接形成一维管状配位聚合物.同时对该配位聚合物的荧光性质进行研究,发现在366 nm处呈现较强的荧光发射(λex=300 nm).
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