Materials Data on ZrH6NOF5 by Materials Project

Abstract

ZrH2OF5NH4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional and consists of four ammonium molecules and one ZrH2OF5 framework. In the ZrH2OF5 framework, Zr4+ is bonded in a 8-coordinate geometry to one O2- and seven F1- atoms. The Zr–O bond length is 2.33 Å. There are a spread of Zr–F bond distances ranging from 2.04–2.31 Å. There are two inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- and one F1- atom. The H–O bond length is 1.00 Å. The H–F bond length is 1.59 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. O2- is bonded in a water-like geometry to one Zr4+ and two H1+ atoms. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a bent 120 degrees geometry to two equivalent Zr4+ atoms. In the second F1- site, F1- is bonded in a distorted single-bond geometry to one Zr4+ atom. In the third F1- site, F1- is bonded in a distorted bent 150 degrees geometry to one Zr4+ and one H1+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Zr4+ atom. In the fifth F1- site, F1- is bonded in a distorted bent 120 degrees geometry to two equivalent Zr4+ atoms.