Materials Data on Zr2Fe2F3 by Materials Project

Abstract

Zr2Fe2F3 crystallizes in the monoclinic Cm space group. The structure is two-dimensional and consists of one Zr2Fe2F3 sheet oriented in the (0, 0, 1) direction. there are three inequivalent Zr sites. In the first Zr site, Zr is bonded in a 4-coordinate geometry to one Fe and four F atoms. The Zr–Fe bond length is 2.84 Å. There are a spread of Zr–F bond distances ranging from 2.18–2.44 Å. In the second Zr site, Zr is bonded in a 3-coordinate geometry to one Fe and three F atoms. The Zr–Fe bond length is 2.68 Å. There are a spread of Zr–F bond distances ranging from 2.09–2.35 Å. In the third Zr site, Zr is bonded in a 3-coordinate geometry to three F atoms. There are one shorter (2.21 Å) and two longer (2.38 Å) Zr–F bond lengths. There are three inequivalent Fe sites. In the first Fe site, Fe is bonded in a single-bond geometry to one F atom. The Fe–F bond length is 1.97 Å. In the second Fe site, Fe is bonded in a distorted single-bond geometry to one F atom. The Fe–F bond length is 2.35 Å. In the third Fe site, Fe is bonded in a 3-coordinate geometry to three Zr atoms. There are four inequivalent F sites. In the first F site, F is bonded in a 3-coordinate geometry to three Zr atoms. In the second F site, F is bonded in a bent 150 degrees geometry to one Zr and one Fe atom. In the third F site, F is bonded in a trigonal non-coplanar geometry to three Zr atoms. In the fourth F site, F is bonded in a 3-coordinate geometry to two Zr and one Fe atom.