Materials Data on Mn2OF3 by Materials Project

Abstract

Mn2OF3 is zeta iron carbide-derived structured and crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are six inequivalent Mn+2.50+ sites. In the first Mn+2.50+ site, Mn+2.50+ is bonded to one O2- and five F1- atoms to form MnOF5 octahedra that share corners with eight MnO2F4 octahedra and edges with two MnOF5 octahedra. The corner-sharing octahedra tilt angles range from 47–55°. The Mn–O bond length is 1.96 Å. There are a spread of Mn–F bond distances ranging from 2.10–2.12 Å. In the second Mn+2.50+ site, Mn+2.50+ is bonded to one O2- and five F1- atoms to form MnOF5 octahedra that share corners with eight MnO2F4 octahedra and edges with two MnOF5 octahedra. The corner-sharing octahedra tilt angles range from 44–56°. The Mn–O bond length is 1.99 Å. There are a spread of Mn–F bond distances ranging from 2.12–2.14 Å. In the third Mn+2.50+ site, Mn+2.50+ is bonded to one O2- and five F1- atoms to form MnOF5 octahedra that share corners with eight equivalent MnO2F4 octahedra and edges with two equivalent MnOF5 octahedra. The corner-sharing octahedra tilt angles range from 48–54°. The Mn–O bond length is 2.00 Å. There are one shorter (2.12 Å) and four longer (2.15 Å) Mn–F bond lengths. In the fourth Mn+2.50+ site, Mn+2.50+ is bonded to two equivalent O2- and four F1- atoms to form MnO2F4 octahedra that share corners with eight equivalent MnOF5 octahedra and edges with two equivalent MnO2F4 octahedra. The corner-sharing octahedra tilt angles range from 47–55°. Both Mn–O bond lengths are 2.00 Å. There are two shorter (2.17 Å) and two longer (2.18 Å) Mn–F bond lengths. In the fifth Mn+2.50+ site, Mn+2.50+ is bonded to two O2- and four F1- atoms to form MnO2F4 octahedra that share corners with eight MnOF5 octahedra and edges with two MnO2F4 octahedra. The corner-sharing octahedra tilt angles range from 48–54°. There is one shorter (1.95 Å) and one longer (1.96 Å) Mn–O bond length. There are a spread of Mn–F bond distances ranging from 2.12–2.18 Å. In the sixth Mn+2.50+ site, Mn+2.50+ is bonded to two O2- and four F1- atoms to form MnO2F4 octahedra that share corners with eight MnOF5 octahedra and edges with two MnO2F4 octahedra. The corner-sharing octahedra tilt angles range from 44–56°. There is one shorter (1.97 Å) and one longer (1.98 Å) Mn–O bond length. There are a spread of Mn–F bond distances ranging from 2.11–2.17 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal planar geometry to three Mn+2.50+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to three Mn+2.50+ atoms. In the third O2- site, O2- is bonded in a trigonal planar geometry to three Mn+2.50+ atoms. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a distorted trigonal planar geometry to three Mn+2.50+ atoms. In the second F1- site, F1- is bonded in a distorted trigonal planar geometry to three Mn+2.50+ atoms. In the third F1- site, F1- is bonded in a 3-coordinate geometry to three Mn+2.50+ atoms. In the fourth F1- site, F1- is bonded in a 3-coordinate geometry to three Mn+2.50+ atoms. In the fifth F1- site, F1- is bonded in a distorted trigonal planar geometry to three Mn+2.50+ atoms. In the sixth F1- site, F1- is bonded in a distorted trigonal planar geometry to three Mn+2.50+ atoms.