Abstract
Eleven novel polyoxometalates, namely [1,1′-(alkane-1,ω-diyl)-bis(3-methylimidazolium)]m [Mo8O26][nH3O+]·xH2O (ω=1–11; m=1, 1.5, 2; n=0, 1; x=0, 1, 2) were synthesized by the self-assembly with octamolybdate anions under hydrothermal reaction conditions. The crystal data analysis revealed that these compounds were all composed of discrete methylimidazolium cations and polyacid anions [Mo8O26]4− interacted by electrostatic interactions and hydrogen bonds. Interestingly, the anions of these compounds took on single [β-Mo8O26]4− cluster, twin [β-Mo8O26]4− clusters, a δ-[Mo8O26]4− cluster and a rare 1D 1/∞[β-Mo8O26]4− polymeric chain with the modification of lengths of alkane components.
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