title: Tetrakis(2,6-di-methyl-pyridinium) di-hydrogen deca-vanadate 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 deca-vanadate anion (the other half completed by inversion symmetry), two 2,6-di-methyl-pyridinium cations and one water mol-ecule of crystallization. In the crystal, the components are connected by strong N-H⋯O and O-H⋯O hydrogen bonds, forming a supra-molecular chain along the b-axis direction. There are weak C-H⋯O inter-actions between the chains.
authors.affiliation: Comenius University, Faculty of Natural Sciences, Department of Inorganic Chemistry, Mlynská dolina CH2, 842 15 Bratislava, Slovak Republic.
authors.forename: Erik
authors.initials: E
authors.lastname: Rakovský
authors.affiliation: Comenius University, Faculty of Natural Sciences, Department of Inorganic Chemistry, Mlynská dolina CH2, 842 15 Bratislava, Slovak Republic.
authors.forename: Lukáš
authors.initials: L
authors.lastname: Krivosudský