Ho3NiGe2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to three equivalent Ni(1), two equivalent Ge(2), and three equivalent Ge(1) atoms. In the second Ho site, Ho(2) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to two equivalent Ni(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to one Ho(2), two equivalent Ho(3), three equivalent Ho(1), one Ge(2), and two equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), two equivalent Ho(3), three equivalent Ho(1), and two equivalent Ni(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), three equivalent Ho(2), three equivalent Ho(3), and one Ni(1) atom.
Ho3NiGe2 crystallizes in the orthorhombic Pnma space group. There are three inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to three equivalent Ni(1), two equivalent Ge(2), and three equivalent Ge(1) atoms. There is one shorter (2.95 Å) and two longer (2.97 Å) Ho(1)-Ni(1) bond lengths. Both Ho(1)-Ge(2) bond lengths are 3.06 Å. All Ho(1)-Ge(1) bond lengths are 2.97 Å. In the second Ho site, Ho(2) is bonded in a 6-coordinate geometry to one Ni(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. The Ho(2)-Ni(1) bond length is 2.83 Å. Both Ho(2)-Ge(1) bond lengths are 2.98 Å. There are two shorter (2.97 Å) and one longer (3.12 Å) Ho(2)-Ge(2) bond length. In the third Ho site, Ho(3) is bonded in a 7-coordinate geometry to two equivalent Ni(1), two equivalent Ge(1), and three equivalent Ge(2) atoms. Both Ho(3)-Ni(1) bond lengths are 2.80 Å. There is one shorter (2.98 Å) and one longer (2.99 Å) Ho(3)-Ge(1) bond length. There are two shorter (3.03 Å) and one longer (3.59 Å) Ho(3)-Ge(2) bond length. Ni(1) is bonded in a 9-coordinate geometry to one Ho(2), two equivalent Ho(3), three equivalent Ho(1), one Ge(2), and two equivalent Ge(1) atoms. The Ni(1)-Ge(2) bond length is 2.49 Å. Both Ni(1)-Ge(1) bond lengths are 2.50 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), two equivalent Ho(3), three equivalent Ho(1), and two equivalent Ni(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), three equivalent Ho(2), three equivalent Ho(3), and one Ni(1) atom.