Ho4Ge3Si crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to two equivalent Ge(1), four equivalent Ge(2), and one Si(1) atom. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one Ge(1), four equivalent Ge(3), and two equivalent Si(1) atoms. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to one Ge(2), two equivalent Ge(3), and four equivalent Si(1) atoms. In the fourth Ho site, Ho(4) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(2), and four equivalent Ge(1) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ho(2), two equivalent Ho(1), four equivalent Ho(4), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Ho(3), two equivalent Ho(4), four equivalent Ho(1), and two equivalent Ge(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ho(4), two equivalent Ho(3), four equivalent Ho(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to one Ho(1), two equivalent Ho(2), four equivalent Ho(3), and two equivalent Ge(3) atoms.
Ho4Ge3Si crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 7-coordinate geometry to two equivalent Ge(1), four equivalent Ge(2), and one Si(1) atom. Both Ho(1)-Ge(1) bond lengths are 3.20 Å. All Ho(1)-Ge(2) bond lengths are 2.94 Å. The Ho(1)-Si(1) bond length is 2.94 Å. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one Ge(1), four equivalent Ge(3), and two equivalent Si(1) atoms. The Ho(2)-Ge(1) bond length is 2.93 Å. All Ho(2)-Ge(3) bond lengths are 2.94 Å. Both Ho(2)-Si(1) bond lengths are 3.14 Å. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to one Ge(2), two equivalent Ge(3), and four equivalent Si(1) atoms. The Ho(3)-Ge(2) bond length is 2.93 Å. Both Ho(3)-Ge(3) bond lengths are 3.15 Å. All Ho(3)-Si(1) bond lengths are 2.94 Å. In the fourth Ho site, Ho(4) is bonded in a 7-coordinate geometry to one Ge(3), two equivalent Ge(2), and four equivalent Ge(1) atoms. The Ho(4)-Ge(3) bond length is 2.96 Å. Both Ho(4)-Ge(2) bond lengths are 3.18 Å. All Ho(4)-Ge(1) bond lengths are 2.93 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ho(2), two equivalent Ho(1), four equivalent Ho(4), and two equivalent Ge(2) atoms. Both Ge(1)-Ge(2) bond lengths are 2.66 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Ho(3), two equivalent Ho(4), four equivalent Ho(1), and two equivalent Ge(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ho(4), two equivalent Ho(3), four equivalent Ho(2), and two equivalent Si(1) atoms. Both Ge(3)-Si(1) bond lengths are 2.60 Å. Si(1) is bonded in a 9-coordinate geometry to one Ho(1), two equivalent Ho(2), four equivalent Ho(3), and two equivalent Ge(3) atoms.