Materials Data on Ce2MnN3 by Materials Project
Ce2MnN3 crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Ce+3.50+ is bonded to seven N3- atoms to form a mixture of distorted corner, edge, and face-sharing CeN7 pentagonal bipyramids. There are a spread of Ce–N bond distances ranging from 2.37–2.58 Å. Mn2+ is bonded in a square co-planar geometry to four N3- atoms. There is two shorter (1.90 Å) and two longer (2.02 Å) Mn–N bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded to four equivalent Ce+3.50+ and two equivalent Mn2+ atoms to form NCe4Mn2 octahedra that share corners with fourteen NCe4Mn2 octahedra, edges with two equivalent NCe4Mn2 octahedra, and faces with four equivalent NCe5Mn octahedra. The corner-sharing octahedra tilt angles range from 0–58°. In the second N3- site, N3- is bonded to five equivalent Ce+3.50+ and one Mn2+ atom to form distorted NCe5Mn octahedra that share corners with eleven NCe4Mn2 octahedra, edges with eight equivalent NCe5Mn octahedra, and faces with two equivalent NCe4Mn2 octahedra. The corner-sharing octahedra tilt angles range from 0–58°.