Materials Data on CsTiF4 by Materials Project

Abstract

CsTiF4 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 8-coordinate geometry to eight equivalent F1- atoms. All Cs–F bond lengths are 3.20 Å. In the second Cs1+ site, Cs1+ is bonded in a 12-coordinate geometry to twelve F1- atoms. There are a spread of Cs–F bond distances ranging from 3.06–3.36 Å. Ti3+ is bonded to six F1- atoms to form corner-sharing TiF6 octahedra. The corner-sharing octahedral tilt angles are 17°. There is two shorter (1.93 Å) and four longer (2.03 Å) Ti–F bond length. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted linear geometry to one Cs1+ and two equivalent Ti3+ atoms. In the second F1- site, F1- is bonded in a distorted single-bond geometry to four Cs1+ and one Ti3+ atom.