DOE OSTI2020
B2(CN2)3 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three N3- atoms. There are a spread of B–N bond distances ranging from 1.44–1.49 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three N3- atoms. There are a spread of B–N bond distances ranging from 1.40–1.45 Å. There are three inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a distorted see-saw-like geometry to four N3- atoms. There are a spread of C–N bond distances ranging from 1.46–1.54 Å. In the second C4+ site, C4+ is bonded to four N3- atoms to form corner-sharing CN4 tetrahedra. There are a spread of C–N bond distances ranging from 1.45–1.61 Å. In the third C4+ site, C4+ is bonded to four N3- atoms to form corner-sharing CN4 tetrahedra. There are a spread of C–N bond distances ranging from 1.45–1.62 Å. There are six inequivalent N3- sites. In the first N3- site, N3- is bonded in a trigonal planar geometry to one B3+ and two C4+ atoms. In the second N3- site, N3- is bonded in a distorted trigonal non-coplanar geometry to one B3+ and two C4+ atoms. In the third N3- site, N3- is bonded in a distorted trigonal planar geometry to one B3+ and two C4+ atoms. In the fourth N3- site, N3- is bonded in a distorted trigonal planar geometry to one B3+ and two equivalent C4+ atoms. In the fifth N3- site, N3- is bonded in a distorted trigonal planar geometry to one B3+ and two C4+ atoms. In the sixth N3- site, N3- is bonded in a distorted trigonal planar geometry to one B3+ and two equivalent C4+ atoms.