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由四(4-吡啶氧甲基)甲烷(tpom)和对苯二甲酸(tpa)与Cd(NO3)2.4H2O合成了配位聚合物{[Cd2(tpom)(tpa)2].(DMF)(H2O)3}n,通过元素分析、红外光谱、X-射线粉末衍射、热重、X-射线单晶衍射对配位聚合物的结构进行了表征。结果表明,标题化合物属于单斜晶系C2/c空间群,晶胞参数为a=3.4747(17)nm,b=2.0899(10)nm,c=1.4292(10)nm,β=111.642(5)°,V=9.647(9)nm3,Z=8,Dc=1.374 g.cm-3,F(000)=3984.0,μ=0.939 mm-1,其6586个可观测点的结构偏差因子R1=0.0566,wR2=0.1408。结构分析表明,对苯二甲酸连接镉离子形成含双核镉(CdCOO)2的平面,四(4-吡啶氧甲基)甲烷连接双核镉形成具有两重穿插pcu拓扑构型的三维骨架。
The coordination polymer {[Cd2 (tpom) (tpa) 2]) was synthesized from tpom, tpa and Cd (NO3) 2.4H2O. (H2O) 3} n. The structure of the coordination polymer was characterized by elemental analysis, IR, XRD, TG and XRD. The results show that the title compound belongs to the monoclinic C2 / c space group with unit cell parameters of a = 3.4747 (17) nm, b = 2.0899 (10) nm, c = The structural deviation factor of 6586 observable points R1 = 0.0566 (V = 9.647 (9) nm3, Z = 8, Dc = 1.374 g.cm-3, F (000) = 3984.0, μ = 0.939 mm-1) , wR2 = 0.1408. The structural analysis shows that the tetracarboxylic acid with tetrakis (4-pyridyloxymethyl) methane is formed on the planar surface of CdCOO 2 by the attachment of Cd (Ⅱ) to terephthalic acid to form a three-dimensional framework with double intercalation pcu topology.