Ho11(In3Si2)2 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to four equivalent In(1), one Si(1), one Si(2), and one Si(3) atom. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to two equivalent In(1), two equivalent In(2), one Si(3), and two equivalent Si(1) atoms. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to one In(2), two equivalent In(1), two equivalent Si(1), and two equivalent Si(2) atoms. In the fourth Ho site, Ho(4) is bonded in a 9-coordinate geometry to four equivalent In(1), four equivalent In(2), and one Si(2) atom. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to one Ho(3), one Ho(4), two equivalent Ho(2), four equivalent Ho(1), one In(1), and one In(2) atom. In the second In site, In(2) is bonded in a 11-coordinate geometry to one Ho(3), two equivalent Ho(4), four equivalent Ho(2), two equivalent In(1), and two equivalent In(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), and four equivalent Ho(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Ho(4), four equivalent Ho(1), and four equivalent Ho(3) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Ho(1) and four equivalent Ho(2) atoms.
Ho11(In3Si2)2 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to four equivalent In(1), one Si(1), one Si(2), and one Si(3) atom. There are two shorter (3.35 Å) and two longer (3.41 Å) Ho(1)-In(1) bond lengths. The Ho(1)-Si(1) bond length is 3.16 Å. The Ho(1)-Si(2) bond length is 3.07 Å. The Ho(1)-Si(3) bond length is 3.04 Å. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to two equivalent In(1), two equivalent In(2), one Si(3), and two equivalent Si(1) atoms. Both Ho(2)-In(1) bond lengths are 3.07 Å. Both Ho(2)-In(2) bond lengths are 3.33 Å. The Ho(2)-Si(3) bond length is 2.97 Å. Both Ho(2)-Si(1) bond lengths are 2.96 Å. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to one In(2), two equivalent In(1), two equivalent Si(1), and two equivalent Si(2) atoms. The Ho(3)-In(2) bond length is 3.29 Å. Both Ho(3)-In(1) bond lengths are 3.44 Å. Both Ho(3)-Si(1) bond lengths are 2.81 Å. Both Ho(3)-Si(2) bond lengths are 3.30 Å. In the fourth Ho site, Ho(4) is bonded in a 9-coordinate geometry to four equivalent In(1), four equivalent In(2), and one Si(2) atom. All Ho(4)-In(1) bond lengths are 3.32 Å. All Ho(4)-In(2) bond lengths are 3.46 Å. The Ho(4)-Si(2) bond length is 3.41 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to one Ho(3), one Ho(4), two equivalent Ho(2), four equivalent Ho(1), one In(1), and one In(2) atom. The In(1)-In(1) bond length is 2.92 Å. The In(1)-In(2) bond length is 3.03 Å. In the second In site, In(2) is bonded in a 11-coordinate geometry to one Ho(3), two equivalent Ho(4), four equivalent Ho(2), two equivalent In(1), and two equivalent In(2) atoms. Both In(2)-In(2) bond lengths are 2.94 Å. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Ho(1), two equivalent Ho(3), and four equivalent Ho(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Ho(4), four equivalent Ho(1), and four equivalent Ho(3) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Ho(1) and four equivalent Ho(2) atoms.