Abstract
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(4))(3) [AlMo(6)O(24)H(6)]·7H(2)O 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, [(C(3)N(2)H(5))(C(3)N(2)H(4))][(β-Mo(8)O(26)H(2))](0.5) (1) and {Zn(C(3)N(2)H(4))(4)}{[(γ-Mo(8)O(26))(C(3)N(2)H(4))(2)](0.5)}·2H(2)O (2). Structural and property characterization revealed that both compounds crystallized in the P-1 space group with relatively stable three-dimensional structures under the action of hydrogen bonding. Upon temperature stimulation, the [Zn(C(3)N(2)H(4))(4)](2+) cation and water molecules in 2 exhibited obvious oscillations, leading to significant dielectric anomalies at approximately 250 and 260 K when dielectric testing was conducted under heating conditions.