Materials Data on OsBr3N5O by Materials Project
OsN5OBr2Br crystallizes in the tetragonal I4mm space group. The structure is two-dimensional and consists of two hydrobromic acid molecules and two OsN5OBr2 sheets oriented in the (0, 0, 1) direction. In each OsN5OBr2 sheet, Os8+ is bonded in a square pyramidal geometry to five N3- atoms. There is one shorter (1.83 Å) and four longer (1.96 Å) Os–N bond length. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to one Os8+ and one O2- atom. The N–O bond length is 1.18 Å. In the second N3- site, N3- is bonded in a distorted single-bond geometry to one Os8+ and two equivalent Br3+ atoms. Both N–Br bond lengths are 2.21 Å. O2- is bonded in a single-bond geometry to one N3- atom. Br3+ is bonded in a distorted rectangular see-saw-like geometry to four equivalent N3- atoms.