Materials Data on SrTaF7 by Materials Project
SrTaF7 crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Sr2+ is bonded in a 10-coordinate geometry to ten F1- atoms. There are a spread of Sr–F bond distances ranging from 2.51–2.95 Å. Ta5+ is bonded in a 7-coordinate geometry to seven F1- atoms. There are a spread of Ta–F bond distances ranging from 1.94–2.03 Å. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted bent 150 degrees geometry to one Sr2+ and one Ta5+ atom. In the second F1- site, F1- is bonded in a 1-coordinate geometry to one Sr2+ and one Ta5+ atom. In the third F1- site, F1- is bonded in a distorted bent 150 degrees geometry to one Sr2+ and one Ta5+ atom. In the fourth F1- site, F1- is bonded in a 1-coordinate geometry to two equivalent Sr2+ and one Ta5+ atom. In the fifth F1- site, F1- is bonded in a 1-coordinate geometry to two equivalent Sr2+ and one Ta5+ atom.