Tetrakis(2,6-dimethylpyridinium) dihydrogen decavanadate dihydrate

Abstract

The structure of the title compound, (C7H10N)4[H2V10O28]·2H2O, was solved from a non-merohedrally twinned crystal (ratio of twin components ∼0.6:0.4). The asymmetric unit consists of one-half decavanadate anion (the other half completed by inversion symmetry), two 2,6-dimethylpyridinium cations and one water molecule of crystallization. In the crystal, the components are connected by strong N—H...O and O—H...O hydrogen bonds, forming a supramolecular chain along theb-axis direction. There are weak C—H...O interactions between the chains.