Materials Data on K2MnSe2 by Materials Project
K2MnSe2 crystallizes in the orthorhombic Ibam space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to six equivalent Se2- atoms. There are a spread of K–Se bond distances ranging from 3.34–3.82 Å. Mn2+ is bonded to four equivalent Se2- atoms to form edge-sharing MnSe4 tetrahedra. All Mn–Se bond lengths are 2.57 Å. Se2- is bonded in a 8-coordinate geometry to six equivalent K1+ and two equivalent Mn2+ atoms.
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