Hu Hongzhi, Abuduheni Adila, Zhao Yujin, Lin Yuhao, Liu Yang, Liu Zunqi
Chemistry and Chemical Engineering College, Xinjiang Agricultural University, Urumqi 830052, China.
Xinjiang Sub-Center National Engineering Research Center of Novel Equipment for Polymer Processing, Urumqi 830052, China.
Molecules. 2025 Jul 24;30(15):3107. doi: 10.3390/molecules30153107.
Polyoxometalate (POM)-type supramolecular materials have unique structures and hold immense potential for development in the fields of biomedicine, information storage, and electrocatalysis. In this study, (NH) [AlMoOH]·7HO was employed as a polyacid anion template, pentacyclic imidazole molecules served as organic ligands, and the moderate-temperature hydrothermal and natural evaporation methods were used in combination for the design and synthesis of two octamolybdenum-oxo cluster (homopolyacids containing molybdenum-oxygen structures as the main small-molecular structures)-based organic-inorganic hybrid compounds, [(CNH)(CNH)][(-MoOH)] () and {Zn(CNH)}{[(-MoO)(CNH)]}·2HO (). Structural and property characterization revealed that both compounds crystallized in the -1 space group with relatively stable three-dimensional structures under the action of hydrogen bonding. Upon temperature stimulation, the [Zn(CNH)] cation and water molecules in exhibited obvious oscillations, leading to significant dielectric anomalies at approximately 250 and 260 K when dielectric testing was conducted under heating conditions.
多金属氧酸盐（POM）型超分子材料具有独特的结构，在生物医学、信息存储和电催化等领域具有巨大的发展潜力。在本研究中，（NH）[AlMoOH]·7HO被用作多酸阴离子模板，五环咪唑分子作为有机配体，并结合中温水热法和自然蒸发法设计合成了两种基于八钼氧簇（以含钼氧结构的同多酸为主要小分子结构）的有机-无机杂化化合物，[(CNH)(CNH)][(-MoOH)] （）和{Zn(CNH)}{[(-MoO)(CNH)]}·2HO （）。结构和性质表征表明，两种化合物均在-1空间群中结晶，在氢键作用下具有相对稳定的三维结构。在温度刺激下，中的[Zn(CNH)]阳离子和水分子表现出明显的振荡，在加热条件下进行介电测试时，在约250和260 K处出现明显的介电异常。
