WB4 crystallizes in the tetragonal P4/mbm space group. W(1) is bonded in a 13-coordinate geometry to one W(1), four equivalent B(1), four equivalent B(2), and four equivalent B(3) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded in a 5-coordinate geometry to four equivalent W(1), one B(1), and four equivalent B(3) atoms. In the second B site, B(3) is bonded in a 7-coordinate geometry to two equivalent W(1), one B(2), two equivalent B(1), and two equivalent B(3) atoms. In the third B site, B(2) is bonded in a 7-coordinate geometry to four equivalent W(1), one B(2), and two equivalent B(3) atoms.
WB4 crystallizes in the tetragonal P4/mbm space group. W(1) is bonded in a 13-coordinate geometry to one W(1), four equivalent B(1), four equivalent B(2), and four equivalent B(3) atoms. The W(1)-W(1) bond length is 2.36 Å. All W(1)-B(1) bond lengths are 2.89 Å. All W(1)-B(2) bond lengths are 2.44 Å. All W(1)-B(3) bond lengths are 2.60 Å. There are three inequivalent B sites. In the first B site, B(1) is bonded in a 5-coordinate geometry to four equivalent W(1), one B(1), and four equivalent B(3) atoms. The B(1)-B(1) bond length is 1.56 Å. All B(1)-B(3) bond lengths are 1.74 Å. In the second B site, B(3) is bonded in a 7-coordinate geometry to two equivalent W(1), one B(2), two equivalent B(1), and two equivalent B(3) atoms. The B(3)-B(2) bond length is 1.67 Å. Both B(3)-B(3) bond lengths are 1.81 Å. In the third B site, B(2) is bonded in a 7-coordinate geometry to four equivalent W(1), one B(2), and two equivalent B(3) atoms. The B(2)-B(2) bond length is 1.73 Å.