Ho12Co5Bi crystallizes in the orthorhombic Immm space group. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 5-coordinate geometry to one Co(1), one Co(3), two equivalent Co(2), and one Bi(1) atom. In the second Ho site, Ho(2) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(1), and one Bi(1) atom. In the third Ho site, Ho(3) is bonded in a 2-coordinate geometry to one Co(1), one Co(2), one Co(3), and one Bi(1) atom. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), four equivalent Ho(2), and one Co(1) atom. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Ho(2), two equivalent Ho(3), four equivalent Ho(1), and one Co(2) atom. In the third Co site, Co(3) is bonded in a distorted body-centered cubic geometry to four equivalent Ho(1) and four equivalent Ho(3) atoms. Bi(1) is bonded in a cuboctahedral geometry to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Ho(3) atoms.
Ho12Co5Bi crystallizes in the orthorhombic Immm space group. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 5-coordinate geometry to one Co(1), one Co(3), two equivalent Co(2), and one Bi(1) atom. The Ho(1)-Co(1) bond length is 3.27 Å. The Ho(1)-Co(3) bond length is 3.18 Å. Both Ho(1)-Co(2) bond lengths are 2.84 Å. The Ho(1)-Bi(1) bond length is 3.60 Å. In the second Ho site, Ho(2) is bonded in a 4-coordinate geometry to one Co(2), two equivalent Co(1), and one Bi(1) atom. The Ho(2)-Co(2) bond length is 2.66 Å. Both Ho(2)-Co(1) bond lengths are 2.82 Å. The Ho(2)-Bi(1) bond length is 3.43 Å. In the third Ho site, Ho(3) is bonded in a 2-coordinate geometry to one Co(1), one Co(2), one Co(3), and one Bi(1) atom. The Ho(3)-Co(1) bond length is 2.69 Å. The Ho(3)-Co(2) bond length is 3.36 Å. The Ho(3)-Co(3) bond length is 2.78 Å. The Ho(3)-Bi(1) bond length is 3.42 Å. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), four equivalent Ho(2), and one Co(1) atom. The Co(1)-Co(1) bond length is 2.24 Å. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to two equivalent Ho(2), two equivalent Ho(3), four equivalent Ho(1), and one Co(2) atom. The Co(2)-Co(2) bond length is 2.16 Å. In the third Co site, Co(3) is bonded in a distorted body-centered cubic geometry to four equivalent Ho(1) and four equivalent Ho(3) atoms. Bi(1) is bonded in a cuboctahedral geometry to four equivalent Ho(1), four equivalent Ho(2), and four equivalent Ho(3) atoms.