The asymmetric unit of the title compound, [Ni(C10H8N2)3][Mo6O19], consists of one complex [(Ni(C10H8N2)3]2+ cation and one Lindqvist-type [Mo6O19]2− polyanion. The Ni2+ ion is in a distorted octahedral coordination by six N atoms from three chelating 2,2′-bipyridine ligands. The Lindqvist-type anion exhibits the characteristic Mo—O bond-length distribution, with the shortest bonds being the Mo—O(terminal) bonds [mean = 1.679 (2) Å] and the longest being those to the central O atom [mean = 2.318 (7) Å]. A number of C—H⋯O interactions contribute to the crystal packing.
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