Materials Data on RbTaN2 by Materials Project

Abstract

RbTaN2 crystallizes in the orthorhombic Pbca space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight N3- atoms. There are a spread of Rb–N bond distances ranging from 3.15–3.55 Å. In the second Rb1+ site, Rb1+ is bonded in a 4-coordinate geometry to five N3- atoms. There are a spread of Rb–N bond distances ranging from 3.03–3.46 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to four N3- atoms to form corner-sharing TaN4 tetrahedra. All Ta–N bond lengths are 1.95 Å. In the second Ta5+ site, Ta5+ is bonded to four N3- atoms to form corner-sharing TaN4 tetrahedra. All Ta–N bond lengths are 1.95 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a distorted bent 150 degrees geometry to four Rb1+ and two equivalent Ta5+ atoms. In the second N3- site, N3- is bonded in a distorted bent 150 degrees geometry to three equivalent Rb1+ and two Ta5+ atoms. In the third N3- site, N3- is bonded in a distorted bent 150 degrees geometry to three Rb1+ and two equivalent Ta5+ atoms. In the fourth N3- site, N3- is bonded in a distorted bent 150 degrees geometry to three Rb1+ and two Ta5+ atoms.