Materials Data on Tl2Fe3S4 by Materials Project

Fe3Tl2S4 crystallizes in the orthorhombic Ibam space group. The structure is three-dimensional. there are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four equivalent S2- atoms to form a mixture of edge and corner-sharing FeS4 tetrahedra. All Fe–S bond lengths are 2.22 Å. In the second Fe2+ site, Fe2+ is bonded to four equivalent S2- atoms to form a mixture of edge and corner-sharing FeS4 tetrahedra. There are two shorter (2.16 Å) and two longer (2.17 Å) Fe–S bond lengths. Tl1+ is bonded in a body-centered cubic geometry to eight equivalent S2- atoms. There are a spread of Tl–S bond distances ranging from 3.30–3.43 Å. S2- is bonded in a 3-coordinate geometry to three Fe2+ and four equivalent Tl1+ atoms.