Materials Data on Ga2CoS4 by Materials Project
CoGa2S4 crystallizes in the tetragonal I-4 space group. The structure is three-dimensional. Co2+ is bonded to four equivalent S2- atoms to form CoS4 tetrahedra that share corners with eight GaS4 tetrahedra. All Co–S bond lengths are 2.27 Å. There are two inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded to four equivalent S2- atoms to form GaS4 tetrahedra that share corners with four equivalent CoS4 tetrahedra and corners with four equivalent GaS4 tetrahedra. All Ga–S bond lengths are 2.32 Å. In the second Ga3+ site, Ga3+ is bonded to four equivalent S2- atoms to form GaS4 tetrahedra that share corners with four equivalent CoS4 tetrahedra and corners with four equivalent GaS4 tetrahedra. All Ga–S bond lengths are 2.31 Å. S2- is bonded in a trigonal non-coplanar geometry to one Co2+ and two Ga3+ atoms.