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inorganic compounds
The structure of potassium manganese(II) polyvanadate, K2Mn(VO3)4, is comprised of VO4 tetrahedra and MnO6 octahedra. Parallel zigzag polyvanadate (VO3)nn- chains of corner-sharing VO4 tetrahedra are cross-linked by separate MnO6 octahedra to form a three-dimensional structure with K+ cations situated in void space.