Cong Yu-Chen, Xiao Hui-Ping, Cai Ping-Wei, Sun Cai, Sun Yan-Qiong, Qi Ming-Qiang, Li Xin-Xiong, Zheng Shou-Tian
Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China.
State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Inorg Chem. 2024 May 20;63(20):9204-9211. doi: 10.1021/acs.inorgchem.4c00741. Epub 2024 May 3.
In this work, a novel organodiphosphate-containing inorganic-organic hybrid polyoxoniobate (PONb) ring {(POCHCHPOH)NbO} () has been achieved by a one-pot hydrothermal method. The ring is constructed from a tetragonal {NbO} motif and four {POCHCHPOH} ligands. Interestingly, can be joined together via K-HO clusters {K(HO)(OH)} to form one-dimensional chains {[K(HO)(OH)]} and further linked by {Cu(en)} (en = ethylenediamine) complexes, resulting in a three-dimensional supramolecular framework {[Cu(en)][K(HO)(OH)]}·3en·HO (). exhibits good chemical and thermal stability and has a high water vapor adsorption capacity of ≤224 cm g (22.71 mol·mol) at 298 K, outperforming most of the known polyoxometalate-based materials. Impedance measurements prove that can transfer protons with moderate conductivity. This study not only contributes to the structural diversity of organodiphosphate-containing PONbs and PONb rings but also provides a reference for the development of PONb-based materials with unique performance.
在本工作中，通过一锅水热法制备了一种新型的含有机二磷酸根的无机-有机杂化聚铌氧酸盐（PONb）环{（POCH₂CH₂PO₂H）NbO}（）。该环由一个四方{NbO}单元和四个{POCH₂CH₂PO₂H}配体构成。有趣的是， 可以通过K-H₂O簇{K（H₂O）（OH）}连接在一起形成一维链{[K（H₂O）（OH）]}，并进一步通过{Cu（en）}（en = 乙二胺）配合物连接，形成三维超分子框架{[Cu（en）][K（H₂O）（OH）]}·3en·H₂O（）。 表现出良好的化学和热稳定性，在298 K时具有≤224 cm³ g⁻¹（22.71 mol·mol⁻¹）的高水蒸气吸附容量，优于大多数已知的基于多金属氧酸盐的材料。阻抗测量证明 可以以适度的电导率传输质子。本研究不仅有助于含有机二磷酸根的PONb和PONb环的结构多样性，也为开发具有独特性能的基于PONb的材料提供了参考。
