Materials Data on BaPO3F by Materials Project
BaPO3F crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are two inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 11-coordinate geometry to nine O2- and two equivalent F1- atoms. There are a spread of Ba–O bond distances ranging from 2.76–3.26 Å. There are one shorter (2.93 Å) and one longer (3.37 Å) Ba–F bond lengths. In the second Ba2+ site, Ba2+ is bonded in a 10-coordinate geometry to nine O2- and one F1- atom. There are a spread of Ba–O bond distances ranging from 2.78–3.31 Å. The Ba–F bond length is 2.79 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a tetrahedral geometry to three O2- and one F1- atom. There is one shorter (1.51 Å) and two longer (1.53 Å) P–O bond length. The P–F bond length is 1.65 Å. In the second P5+ site, P5+ is bonded in a tetrahedral geometry to three O2- and one F1- atom. There is two shorter (1.52 Å) and one longer (1.53 Å) P–O bond length. The P–F bond length is 1.64 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Ba2+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Ba2+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Ba2+ and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Ba2+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to three Ba2+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to three equivalent Ba2+ and one P5+ atom. There are two inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one P5+ atom. In the second F1- site, F1- is bonded in a distorted single-bond geometry to one Ba2+ and one P5+ atom.