HoCo4B crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 6-coordinate geometry to six equivalent Co(2) atoms. In the second Ho site, Ho(2) is bonded in a 18-coordinate geometry to twelve equivalent Co(1) and six equivalent B(1) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted L-shaped geometry to two equivalent Ho(2), two equivalent Co(2), and two equivalent B(1) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to three equivalent Ho(1) and six equivalent Co(1) atoms. B(1) is bonded in a 6-coordinate geometry to three equivalent Ho(2) and six equivalent Co(1) atoms.
HoCo4B crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 6-coordinate geometry to six equivalent Co(2) atoms. All Ho(1)-Co(2) bond lengths are 2.88 Å. In the second Ho site, Ho(2) is bonded in a 18-coordinate geometry to twelve equivalent Co(1) and six equivalent B(1) atoms. All Ho(2)-Co(1) bond lengths are 2.89 Å. All Ho(2)-B(1) bond lengths are 2.88 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted L-shaped geometry to two equivalent Ho(2), two equivalent Co(2), and two equivalent B(1) atoms. Both Co(1)-Co(2) bond lengths are 2.44 Å. Both Co(1)-B(1) bond lengths are 2.05 Å. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to three equivalent Ho(1) and six equivalent Co(1) atoms. B(1) is bonded in a 6-coordinate geometry to three equivalent Ho(2) and six equivalent Co(1) atoms.