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DOE OSTI2020

Materials Data on Ca(MnS2)2 by Materials Project

Ca(MnS2)2 is Spinel structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Ca2+ is bonded to four equivalent S2- atoms to form CaS4 tetrahedra that share corners with twelve equivalent MnS6 octahedra. The corner-sharing octahedral tilt angles are 61°. All Ca–S bond lengths are 2.65 Å. Mn3+ is bonded to six equivalent S2- atoms to form MnS6 octahedra that share corners with six equivalent CaS4 tetrahedra and edges with six equivalent MnS6 octahedra. All Mn–S bond lengths are 2.49 Å. S2- is bonded to one Ca2+ and three equivalent Mn3+ atoms to form a mixture of distorted edge and corner-sharing SCaMn3 tetrahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Ca(MnS2)2 by Materials Project

Ca(MnS2)2 is Spinel structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Ca2+ is bonded to four equivalent S2- atoms to form CaS4 tetrahedra that share corners with twelve equivalent MnS6 octahedra. The corner-sharing octahedra tilt angles range from 53–65°. All Ca–S bond lengths are 2.68 Å. Mn3+ is bonded to six equivalent S2- atoms to form distorted MnS6 octahedra that share corners with six equivalent CaS4 tetrahedra and edges with six equivalent MnS6 octahedra. There are four shorter (2.36 Å) and two longer (2.90 Å) Mn–S bond lengths. S2- is bonded to one Ca2+ and three equivalent Mn3+ atoms to form a mixture of distorted edge and corner-sharing SCaMn3 tetrahedra.

36 MATERIALS SCIENCE↗