Materials Data on Tm5B2(O2F3)3 by Materials Project

Abstract

Tm5B2(O2F3)3 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Tm3+ sites. In the first Tm3+ site, Tm3+ is bonded in a 9-coordinate geometry to four O2- and five F1- atoms. There are a spread of Tm–O bond distances ranging from 2.32–2.55 Å. There are a spread of Tm–F bond distances ranging from 2.17–2.39 Å. In the second Tm3+ site, Tm3+ is bonded in a 8-coordinate geometry to three O2- and five F1- atoms. There are a spread of Tm–O bond distances ranging from 2.28–2.39 Å. There are a spread of Tm–F bond distances ranging from 2.20–2.49 Å. In the third Tm3+ site, Tm3+ is bonded in a 9-coordinate geometry to four O2- and five F1- atoms. There are two shorter (2.30 Å) and two longer (2.35 Å) Tm–O bond lengths. There are a spread of Tm–F bond distances ranging from 2.24–2.63 Å. B3+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.38 Å) and two longer (1.39 Å) B–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to three Tm3+ and one B3+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Tm3+ and one B3+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to three Tm3+ and one B3+ atom. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a 2-coordinate geometry to three Tm3+ atoms. In the second F1- site, F1- is bonded in a 3-coordinate geometry to three Tm3+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Tm3+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three Tm3+ atoms. In the fifth F1- site, F1- is bonded in a distorted bent 150 degrees geometry to two equivalent Tm3+ atoms.