metal-organic compounds
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In the title compound, (C14H16N4)2[Mo8O26], the β-octamolybdate anion is centrosymmetric. N—HO hydrogen bonds link the diimidazolium cations and the polyoxidoanions into a chain structure along [100]. π–π interactions between the imidazole rings and between the imidazole and benzene rings [centroid–centroid distances = 3.611 (2) and 3.689 (3) Å, respectively] connect the chains.