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多孔配位聚合物{[Cd2(tpom)(tpa)2]·(DMF)(H2O)3}n的合成及表征
Synthesis and characterization of porous coordination polymer{[Cd2(tpom)(tpa)2]·(DMF)(H2O)3}n
【摘要】 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。
【Abstract】 A new coordination polymer{[Cd2(tpom)(tpa)2]·(DMF)(H2O)3}n was synthesized through the assembly of tetrakis(4-pyridyloxymethylene)methane)(tpom)and terephthalate(tpa)with Cd(NO3)2·4H2O,and characterized by elemental analysis,IR spectra,PXRD,thermogravimetric analyses and single crystal X-ray structure analyses.The results show that the title compound crystallizes in monoclinic,space group C2/c with 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,the final R1=0.0566 and wR2=0.1408 for 6586 observed reflections(I>2σ(I)).The structural analysis reveals that terephthalate connects cadmium ions to form a plane with dinuclear(CdCOO)2,and tetrakis(4-pyridyloxymethylene)methane links the dinuclear cadmiums into a two-fold interpenetrating 3-dimentional architecture of pcu topology.
【Key words】 cadmium coordination polymer; crystal structure; tetrakis(4-pyridyloxymethylene)methane); terephthalate;
- 【文献出处】 化学研究与应用 ,Chemical Research and Application , 编辑部邮箱 ,2013年01期
- 【分类号】O634
- 【下载频次】126