Materials Data on CrN2 by Materials Project

CrN2 crystallizes in the orthorhombic I2_12_12_1 space group. The structure is three-dimensional. there are two inequivalent Cr6+ sites. In the first Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.74 Å) and two longer (1.75 Å) Cr–N bond length. In the second Cr6+ site, Cr6+ is bonded to four N3- atoms to form corner-sharing CrN4 tetrahedra. There is two shorter (1.74 Å) and two longer (1.76 Å) Cr–N bond length. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 120 degrees geometry to two Cr6+ atoms. In the second N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms. In the third N3- site, N3- is bonded in a bent 120 degrees geometry to two equivalent Cr6+ atoms.