Materials Data on TiS2 by Materials Project

TiS2 crystallizes in the trigonal R3m space group. The structure is three-dimensional. there are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to four S2- atoms to form corner-sharing TiS4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are three shorter (2.26 Å) and one longer (2.45 Å) Ti–S bond lengths. In the second Ti4+ site, Ti4+ is bonded to six S2- atoms to form TiS6 octahedra that share corners with three equivalent TiS4 tetrahedra and edges with four equivalent TiS6 octahedra. There are a spread of Ti–S bond distances ranging from 2.28–2.61 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted T-shaped geometry to three equivalent Ti4+ atoms. In the second S2- site, S2- is bonded in an L-shaped geometry to two equivalent Ti4+ atoms. In the third S2- site, S2- is bonded in a distorted tetrahedral geometry to four Ti4+ atoms. In the fourth S2- site, S2- is bonded in a distorted trigonal planar geometry to three Ti4+ atoms.