Materials Data on Sr5(CoN2)2 by Materials Project

Sr5(CoN2)2 crystallizes in the tetragonal P4/ncc space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a square co-planar geometry to four equivalent N3- atoms. All Sr–N bond lengths are 2.83 Å. In the second Sr2+ site, Sr2+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent N3- atoms. There are a spread of Sr–N bond distances ranging from 2.57–2.83 Å. Co1+ is bonded in a linear geometry to two equivalent N3- atoms. Both Co–N bond lengths are 1.80 Å. N3- is bonded in a 6-coordinate geometry to five Sr2+ and one Co1+ atom.