B13N2 crystallizes in the trigonal R-3m space group. There are three inequivalent B sites. In the first B site, B(1) is bonded in a single-bond geometry to three equivalent B(2) and one N(1) atom. In the second B site, B(3) is bonded in a linear geometry to two equivalent N(1) atoms. In the third B site, B(2) is bonded in a 6-coordinate geometry to three equivalent B(1) and three equivalent B(2) atoms. N(1) is bonded to one B(3) and three equivalent B(1) atoms to form corner-sharing NB4 tetrahedra.
B13N2 crystallizes in the trigonal R-3m space group. There are three inequivalent B sites. In the first B site, B(1) is bonded in a single-bond geometry to three equivalent B(2) and one N(1) atom. There are two shorter (1.81 Å) and one longer (1.82 Å) B(1)-B(2) bond length. The B(1)-N(1) bond length is 1.57 Å. In the second B site, B(3) is bonded in a linear geometry to two equivalent N(1) atoms. Both B(3)-N(1) bond lengths are 1.43 Å. In the third B site, B(2) is bonded in a 6-coordinate geometry to three equivalent B(1) and three equivalent B(2) atoms. There is one shorter (1.72 Å) and two longer (1.79 Å) B(2)-B(2) bond lengths. N(1) is bonded to one B(3) and three equivalent B(1) atoms to form corner-sharing NB4 tetrahedra.