Materials Data on Zr2O by Materials Project

Abstract

Zr2O is beta Vanadium nitride-like structured and crystallizes in the trigonal P312 space group. The structure is three-dimensional. there are two inequivalent Zr sites. In the first Zr site, Zr is bonded in a distorted T-shaped geometry to three O atoms. All Zr–O bond lengths are 2.31 Å. In the second Zr site, Zr is bonded in a distorted T-shaped geometry to three O atoms. There are one shorter (2.26 Å) and two longer (2.31 Å) Zr–O bond lengths. There are four inequivalent O sites. In the first O site, O is bonded to six Zr atoms to form a mixture of face and corner-sharing OZr6 octahedra. The corner-sharing octahedra tilt angles range from 46–49°. In the second O site, O is bonded to six equivalent Zr atoms to form a mixture of edge and face-sharing OZr6 octahedra. In the third O site, O is bonded to six equivalent Zr atoms to form a mixture of edge and corner-sharing OZr6 octahedra. The corner-sharing octahedral tilt angles are 49°. In the fourth O site, O is bonded to six equivalent Zr atoms to form a mixture of edge and corner-sharing OZr6 octahedra. The corner-sharing octahedral tilt angles are 46°.