Ho6Zn23 crystallizes in the cubic Fm-3m space group. Ho(1) is bonded in a 12-coordinate geometry to four equivalent Zn(2), four equivalent Zn(3), and four equivalent Zn(4) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(4) is bonded in a distorted q6 geometry to three equivalent Ho(1), three equivalent Zn(2), three equivalent Zn(3), and three equivalent Zn(4) atoms. In the second Zn site, Zn(1) is bonded in a body-centered cubic geometry to eight equivalent Zn(3) atoms. In the third Zn site, Zn(2) is bonded to four equivalent Ho(1), four equivalent Zn(3), and four equivalent Zn(4) atoms to form a mixture of corner and face-sharing ZnHo4Zn8 cuboctahedra. In the fourth Zn site, Zn(3) is bonded in a 10-coordinate geometry to three equivalent Ho(1), one Zn(1), three equivalent Zn(2), and three equivalent Zn(4) atoms.
Ho6Zn23 crystallizes in the cubic Fm-3m space group. Ho(1) is bonded in a 12-coordinate geometry to four equivalent Zn(2), four equivalent Zn(3), and four equivalent Zn(4) atoms. All Ho(1)-Zn(2) bond lengths are 3.17 Å. All Ho(1)-Zn(3) bond lengths are 3.04 Å. All Ho(1)-Zn(4) bond lengths are 3.08 Å. There are four inequivalent Zn sites. In the first Zn site, Zn(4) is bonded in a distorted q6 geometry to three equivalent Ho(1), three equivalent Zn(2), three equivalent Zn(3), and three equivalent Zn(4) atoms. All Zn(4)-Zn(2) bond lengths are 2.56 Å. All Zn(4)-Zn(3) bond lengths are 2.71 Å. All Zn(4)-Zn(4) bond lengths are 2.76 Å. In the second Zn site, Zn(1) is bonded in a body-centered cubic geometry to eight equivalent Zn(3) atoms. All Zn(1)-Zn(3) bond lengths are 2.67 Å. In the third Zn site, Zn(2) is bonded to four equivalent Ho(1), four equivalent Zn(3), and four equivalent Zn(4) atoms to form a mixture of corner and face-sharing ZnHo4Zn8 cuboctahedra. All Zn(2)-Zn(3) bond lengths are 2.72 Å. In the fourth Zn site, Zn(3) is bonded in a 10-coordinate geometry to three equivalent Ho(1), one Zn(1), three equivalent Zn(2), and three equivalent Zn(4) atoms.