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在水热条件下利用邻苯二乙酸,2,2′-二联吡啶和硝酸镉反应生成配合物[Cd_2(1,2-pda)_2(bipy)_2(H_2O)_2]_n(1,2-pda=邻苯二乙酸、2,2′-bipy=2,2′-二联吡啶)。采用红外光谱、差热-热重、C H N元素分析、荧光及单晶X射线衍射等手段对晶体结构进行了表征。配合物属正交晶系,空间群为Pna2(1);晶体学参数:a=18.5087(18)nm,b=8.9432(9)nm,c=23.685(2)nm;α=β=γ=90。其基本结构单元由两个Cd(II)原子、两个邻苯二乙酸根、两个2,2′-二联吡啶、两个水分子组成。邻苯二乙酸与Cd(Ⅱ)原子交替连接形成一维直线,相邻的两条直线通过氢键的支撑连接形成一维双链结构。荧光性质研究表明,配合物在504nm处呈现较强的荧光发射(λ_(ex)=350nm)。
The reaction of 2,2’-dipyridyl and cadmium nitrate to form the complex [Cd_2 (1,2-pda) 2 (bipy) _2 (H_2O) _2] _n -pda = orthophthalic acid, 2,2’-bipy = 2,2’-bipyridine). The crystal structure was characterized by FTIR, TG-DTA, C H N elemental analysis, fluorescence and single crystal X-ray diffraction. The complex belongs to the orthorhombic system with space group Pna2 (1). The crystallographic parameters are: a = 18.5087 (18) nm, b = 8.9432 (9) nm, c = 23.685 90. Its basic building block consists of two Cd (II) atoms, two phthalides, two 2,2’-dipyridyls and two water molecules. The phthalic acid and Cd (Ⅱ) atoms are alternately connected to form a one-dimensional straight line. Two adjacent straight lines are connected by hydrogen bonds to form a one-dimensional double-stranded structure. Fluorescence properties showed that the complex showed strong fluorescence emission at 504nm (λ_ (ex) = 350nm).