Abstract Based on 2-(4-pyridyl)-terephthalate (H2pta) and oxalate ligands, two new lanthanide-containing coordination polymers (CPs), [Tb(pta)(C2O4)0.5(H2O)2)]·2H2O (1) and [Sm(pta)(C2O4)0.5(H2O)2)]·2H2O (2), have been synthesized under solvothermal conditions. The structures of both 1 and 2 have been determined by single-crystal X-ray diffraction. Infrared, elemental analysis, powder X-ray diffraction and thermogravimetric analysis data are also presented. The crystals of 1 and 2 exhibit isostructural layer-like networks, crystallizing in the triclinic space group P 1 ‾ $‾{1}$ . The layers are further stabilized and associated into 3D architectures through hydrogen bonding. Remarkably, the CPs 1 and 2 exhibit excellent water stability and remarkable thermostability with thermal decomposition temperatures of more than 420 °C.

中文翻译：

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二维镧系元素 (III) 配位聚合物：溶剂热合成、晶体结构和稳定性

摘要 基于 2-(4-吡啶基)-对苯二甲酸酯 (H2pta) 和草酸酯配体，两种新型含镧系元素的配位聚合物 (CPs)，[Tb(pta)(C2O4)0.5(H2O)2)]·2H2O (1)和[Sm(pta)(C2O4)0.5(H2O)2)]·2H2O (2)，已在溶剂热条件下合成。1 和 2 的结构均已通过单晶 X 射线衍射确定。还提供了红外、元素分析、粉末 X 射线衍射和热重分析数据。1 和 2 的晶体表现出等结构的层状网络，在三斜空间群 P 1 ‾ $‾{1}$ 中结晶。这些层通过氢键进一步稳定并关联到 3D 架构中。值得注意的是，CPs 1 和 2 表现出优异的水稳定性和显着的热稳定性，热分解温度超过 420 °C。