ReB3 crystallizes in the hexagonal P6_3/mmc space group. Re(1) is bonded in a 8-coordinate geometry to eight equivalent B(2) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a distorted hexagonal planar geometry to six equivalent B(2) atoms. In the second B site, B(2) is bonded in a 10-coordinate geometry to four equivalent Re(1), three equivalent B(1), and three equivalent B(2) atoms.
ReB3 crystallizes in the hexagonal P6_3/mmc space group. Re(1) is bonded in a 8-coordinate geometry to eight equivalent B(2) atoms. All Re(1)-B(2) bond lengths are 2.33 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a distorted hexagonal planar geometry to six equivalent B(2) atoms. All B(1)-B(2) bond lengths are 1.86 Å. In the second B site, B(2) is bonded in a 10-coordinate geometry to four equivalent Re(1), three equivalent B(1), and three equivalent B(2) atoms. All B(2)-B(2) bond lengths are 2.00 Å.