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水热条件下,合成了一维之字链配位聚合物[Cd(p-cpoa)(H2O)3]n(1)(p-cpoa=4-羧基苯氧乙酸阴离子)并通过元素分析,IR,TG,PL和单晶X射线衍射对其结构进行了表征。该配合物属单斜晶系,P21/c空间群,晶胞参数分别为:a=7.086(1),b=16.288(1),c=10.146(1),β=100.22(1)o,V=1152.4(1)3,Z=4,Dc=2.078g/cm3,μ=1.927mm-1andF(000)=712,R=0.0145,wR=0.0385.镉离子是七配位,与两个4-CPOA的羧基氧原子和3个端基水配位形成变形的五角双锥,并被4-CPOA以双双齿螯合的形式桥连形成沿B方向的Z字形链,链内镉离子间距为10.25(1)。单链通过4-羧基苯氧乙酸和水分子之间的O-H-O氢键作用(2.828(2),2.638(2),2.825(2),2.663(2)and2.728(2))形成平行于AB平面的二维层,再通过相邻层间的配位水和羧酸基强的O-H-O氢键作用堆垛成有趣的三维超分子结构。热分析结果表明在366℃前配合物是稳定的;固体荧光测定结果表明配合物于420nm处发射蓝色荧光,其荧光寿命为0.811ns。
Under the hydrothermal conditions, one-dimensional zigzag chain coordination polymer [Cd (p-cpoa) (H2O) 3] n (1) was synthesized and analyzed by elemental analysis. Its structure was characterized by IR, TG, PL and single crystal X-ray diffraction. The complex belongs to the monoclinic system with P21 / c space group with unit cell parameters of a = 7.086 (1), b = 16.288 (1), c = 10.146 , V = 1152.4 (1) 3, Z = 4, Dc = 2.078g / cm3, μ = 1.927mm-1andF (000) = 712, R = 0.0145, wR = 0.0385. The 4-CPOA carboxyl oxygen atoms coordinate with the 3 terminal groups to form a deformed pentagonal bipyramidal bridge and are bridged by 4-CPOA in bidentate form to form a zigzag chain along the B direction. The chain cadmium ions The pitch is 10.25 (1) . The single strand forms an OHO hydrogen bond (2.828 (2), 2.638 (2), 2.825 (2), 2.663 (2) and 2.728 (2) ) between 4-carboxy- phenoxyacetic acid and water molecules AB planar two-dimensional layer, and then through the adjacent layers of coordinated water and carboxylic acid OHO strong hydrogen bond stacking into the interesting three-dimensional supramolecular structure. Thermal analysis showed that the complex was stable before 366 ℃. The results of solid-state fluorescence measurement showed that the complex emitted blue fluorescence at 420nm with a fluorescence lifetime of 0.811ns.