Materials Data on KMn2(MoO5)2 by Materials Project

Abstract

KMn2(MoO5)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. K1+ is bonded in a 6-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.75–3.29 Å. Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with four equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 43–58°. There are a spread of Mo–O bond distances ranging from 1.74–1.83 Å. Mn+3.50+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with four equivalent MoO4 tetrahedra and edges with two equivalent MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.86–2.31 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Mn+3.50+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+, one Mo6+, and one Mn+3.50+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Mo6+, and two equivalent Mn+3.50+ atoms.