B crystallizes in the cubic Pm-3 space group. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to two equivalent B(1), two equivalent B(3), and three equivalent B(4) atoms. In the second B site, B(3) is bonded in a 6-coordinate geometry to one B(2), one B(3), two equivalent B(1), and two equivalent B(4) atoms. In the third B site, B(2) is bonded in a 6-coordinate geometry to one B(3) and five equivalent B(2) atoms. In the fourth B site, B(4) is bonded in a 5-coordinate geometry to two equivalent B(3) and three equivalent B(1) atoms.
B crystallizes in the cubic Pm-3 space group. There are four inequivalent B sites. In the first B site, B(1) is bonded in a 7-coordinate geometry to two equivalent B(1), two equivalent B(3), and three equivalent B(4) atoms. There is one shorter (2.05 Å) and one longer (2.06 Å) B(1)-B(1) bond length. Both B(1)-B(3) bond lengths are 1.90 Å. There is one shorter (1.70 Å) and two longer (1.79 Å) B(1)-B(4) bond lengths. In the second B site, B(3) is bonded in a 6-coordinate geometry to one B(2), one B(3), two equivalent B(1), and two equivalent B(4) atoms. The B(3)-B(2) bond length is 1.70 Å. The B(3)-B(3) bond length is 1.91 Å. Both B(3)-B(4) bond lengths are 1.71 Å. In the third B site, B(2) is bonded in a 6-coordinate geometry to one B(3) and five equivalent B(2) atoms. There are four shorter (1.79 Å) and one longer (1.81 Å) B(2)-B(2) bond length. In the fourth B site, B(4) is bonded in a 5-coordinate geometry to two equivalent B(3) and three equivalent B(1) atoms.