The lanthanide coordination polymer, Tb2(tda)3(H2O)2, and it's single crystals was self-assembled from thiodiglycolic acid (H2tda) and corresponding terbium (Ⅲ) chlorides under hydrothermal conditions. Single-crystal structure shows that the compound presents a 2D network, an edge-sharing dinuclear polyhedral [Tb2O16] was found to be the building unit of the network, in which the eight-coordinated TbO8and nine-coordinated TbO9 cores exhibit distinct coordination environments, that is, one is in a distorted monocapped square antiprism surrounding and the other is in a triply capped trigonal prism. The H2tda ligand exhibits two different coordination modes in framework, including mode a: Bis "syn, syn-bridging bidentate, chelating-bridging tridentate", mode b: Bis "chelating-bridging bidentate, syn, anti-bridging bidentate". Eventually, through the weak interaction, the networks formed 3D supramolecular architectures. Photoluminescence measurements indicate that the terbium compound is a strong green emitter in the solid state at room temperature. Crystal data for the complex: triclinic. Space group P(1), with a=0.79466(8)nm, b=1.06796(11)nm, c=1.43323(14)nm,α=70.51700(10)°,β=75.6480(2)°,γ=76.9750(2)°, V=109726(19)nm3, and Z=2. CCDC:667667.%在水热条件下,利用硫代羟基二乙酸配体[thiodiglycolic acid=H2tda]和TbCl3·nH2O合成了新型稀土配合物[Tb2(tda)3(H2O)2].单品结构表明,配合物是以共边多面体[Tb2O16]为基本单元构筑的二维结构,并通过弱相互作用拓展为三维超分子体系.中心原子铽与氧原子的配位数是8和9,分别形成了单帽反四棱柱和三帽三角棱柱构型的空间配位多面体.配体H2tda在配合物中存在两种配位模式:(a)双"顺-顺桥式双齿、螯合桥式三齿"模式和(b)双"螯合双齿、顺-反桥式双齿"模式.荧光光谱研究表明:该配合物在室温下呈现较强的绿色荧光发射.配合物属三斜晶系,空间群P(1).
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