Abstract Two new organic–inorganic hybrids constructed from nano-sized Preyssler polyoxometalate and trivalent lanthanide cations, Na{K(H2O)6}{Eu4(H2O)12(Hina)8}{Na(H2O)P5W30O110}·14H2O (1), Na2[{Tb2(H2O)6(Hina)2}{Tb2(H2O)7(Hina)3}{Na(H2O)P5W30O110}]·15H2O (2) (Hina = isonicotinic acid), have been synthesized under hydrothermal strategy and characterized by powder X-ray diffractions, single crystal X-ray diffractions, IR spectra, elemental analysis, TG analyses, and UV/Vis spectra. Compound 1 represents an infrequent 2D bilayer network based on {P5W30} and {Eu4(ina)8} building block. Different from 1, compound 2 shows a 2D monolayer containing {P5W30}, {Tb2(ina)2} and {Tb4(ina)6} building blocks. It is noteworthy that compound 1 displays the first 2D bilayer extended structure modified by Preyssler anions. Furthermore, solid-state photoluminescence (PL) properties of these two compounds have been researched.

中文翻译：

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两种基于 Preyssler 阴离子的二维配位聚合物：合成、晶体结构和光致发光特性

摘要 由纳米级 Preyssler 多金属氧酸盐和三价镧系元素阳离子构建的两种新型有机-无机杂化物，Na{K(H2O)6}{Eu4(H2O)12(Hina)8}{Na(H2O)P5W30O110}·14H2O (1) , Na2[{Tb2(H2O)6(Hina)2}{Tb2(H2O)7(Hina)3}{Na(H2O)P5W30O110}]·15H2O(2)（Hina=异烟酸），已在水热下合成策略并通过粉末 X 射线衍射、单晶 X 射线衍射、IR 光谱、元素分析、TG 分析和 UV/Vis 光谱表征。化合物 1 表示基于 {P5W30} 和 {Eu4(ina)8} 构建块的罕见 2D 双层网络。与 1 不同，化合物 2 显示包含 {P5W30}、{Tb2(ina)2} 和 {Tb4(ina)6} 构建块的二维单层。值得注意的是，化合物 1 显示出第一个由 Preyssler 阴离子修饰的二维双层扩展结构。此外，