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由模板方式合成了配位聚合物{[Nd2(μ2-NTA)2.4H2O]}n,并用元素分析、傅立叶红外光谱以及差热分析进行表征。晶体结构采用X射线单晶衍射仪测定,该配合物属单斜晶系,P2(1)/n空间群,晶胞参数:a=0.62456(4)nm,b=2.09517(9)nm,c=0.83362(4)nm,β=102.690(2)°,V=1.06419(10)nm3,Z=2,μ=4.907 mm-1,Dc=2.299 g/cm3,F(000)=708。中心原子Nd与来自1个NTA3-配体的1N3O、2个邻位分子的桥链羧基O以及2个H2O分子的O配位,形成8配位的双帽八面体构型。配体NTA3-中1个羧基为双齿桥联,1个采取μ2-O桥式二齿配位,另1羧基呈单齿配位。该配合物通过配体的羧基桥链作用连接成1-D无限链状结构。
The coordination polymer {[Nd2 (μ2-NTA) 2.4H2O]} n was synthesized by the template method and characterized by elemental analysis, Fourier transform infrared spectroscopy and differential thermal analysis. The crystal structure was determined by X-ray single crystal diffraction. The complex belongs to the monoclinic space group P2 (1) / n with unit parameters of a = 0.62456 (4) nm and b = 2.09517 = 0.83362 (4) nm, β = 102.690 (2) °, V = 1.06419 (10) nm3, Z = 2, μ = 4.907 mm-1, Dc = 2.299 g / cm3, F (000) = 708. The central atom Nd coordinates with 1N3O from 1 NTA3-ligand and 2-O-bridged carboxyl O and 2 H2O to form 8-coordinated double-cap octahedral configuration. One carboxyl group in ligand NTA3- is bidentate bridging, one adopts the bidentate coordination of μ2-O bridge, and the other carboxyl group is monodentate coordination. The complex is connected to a 1-D infinite chain structure through the carboxyl bridge of the ligand.