Materials Data on LaMnN3 by Materials Project
LaMnN3 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. La2+ is bonded in a 7-coordinate geometry to seven N3- atoms. There are a spread of La–N bond distances ranging from 2.57–2.71 Å. Mn7+ is bonded to four N3- atoms to form edge-sharing MnN4 tetrahedra. There is three shorter (1.84 Å) and one longer (1.88 Å) Mn–N bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a 1-coordinate geometry to two equivalent La2+ and one Mn7+ atom. In the second N3- site, N3- is bonded to three equivalent La2+ and two equivalent Mn7+ atoms to form a mixture of distorted edge and corner-sharing NLa3Mn2 trigonal bipyramids.
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