Hexalithium hexadecahydrate decavanadate, [Li6(H2O)16V10O28]n

The novel title compound, poly­[octa-μ-aqua-octa­aqua-μ-decavanadato-hexalithium], contains [V10O28]6− polyanions with 2/m symmetry linked by centrosymmetric [Li6(H2O)16]6+ cation chains. The [V10O28]6− polyanions form a two-dimensional network with [Li6(H2O)16]6+ chains via O-polyanion–Li-chain coordination, with Li—O bond lengths in the range 2.007 (5)–2.016 (5) Å. The hexalithium hexadecahydrate chain is composed of a centrosymmetric pair of LiO6 octahedra and four distorted LiO4 tetrahedra. Hydro­gen bonds occur between the polyanion and the Li-based chains, and within the Li-based chains.