Materials Data on Li(MnS2)2 by Materials Project

Li(MnS2)2 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. Li1+ is bonded to six S2- atoms to form LiS6 octahedra that share corners with six equivalent MnS4 tetrahedra, edges with two equivalent LiS6 octahedra, and edges with four equivalent MnS6 octahedra. There are four shorter (2.48 Å) and two longer (2.52 Å) Li–S bond lengths. There are two inequivalent Mn+3.50+ sites. In the first Mn+3.50+ site, Mn+3.50+ is bonded to four S2- atoms to form MnS4 tetrahedra that share corners with six equivalent LiS6 octahedra and corners with six equivalent MnS6 octahedra. The corner-sharing octahedra tilt angles range from 52–59°. There are two shorter (2.22 Å) and two longer (2.32 Å) Mn–S bond lengths. In the second Mn+3.50+ site, Mn+3.50+ is bonded to six S2- atoms to form MnS6 octahedra that share corners with six equivalent MnS4 tetrahedra, edges with two equivalent MnS6 octahedra, and edges with four equivalent LiS6 octahedra. There are two shorter (2.37 Å) and four longer (2.40 Å) Mn–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a rectangular see-saw-like geometry to one Li1+ and three Mn+3.50+ atoms. In the second S2- site, S2- is bonded in a rectangular see-saw-like geometry to two equivalent Li1+ and two Mn+3.50+ atoms.