Sc3(NiGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 12-coordinate geometry to six equivalent Ni(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Sc site, Sc(2) is bonded to eight equivalent Ni(1), two equivalent Ge(1), and four equivalent Ge(2) atoms to form face-sharing ScNi8Ge6 octahedra. Ni(1) is bonded in a 12-coordinate geometry to two equivalent Sc(2), three equivalent Sc(1), three equivalent Ni(1), one Ge(2), and three 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 one Sc(2), two equivalent Sc(1), and six equivalent Ni(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sc(2), four equivalent Sc(1), two equivalent Ni(1), and one Ge(2) atom.
Sc3(NiGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Sc sites. In the first Sc site, Sc(1) is bonded in a 12-coordinate geometry to six equivalent Ni(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. There are two shorter (2.82 Å) and four longer (2.86 Å) Sc(1)-Ni(1) bond lengths. Both Sc(1)-Ge(1) bond lengths are 2.78 Å. All Sc(1)-Ge(2) bond lengths are 2.85 Å. In the second Sc site, Sc(2) is bonded to eight equivalent Ni(1), two equivalent Ge(1), and four equivalent Ge(2) atoms to form face-sharing ScNi8Ge6 octahedra. All Sc(2)-Ni(1) bond lengths are 3.27 Å. Both Sc(2)-Ge(1) bond lengths are 2.81 Å. All Sc(2)-Ge(2) bond lengths are 2.79 Å. Ni(1) is bonded in a 12-coordinate geometry to two equivalent Sc(2), three equivalent Sc(1), three equivalent Ni(1), one Ge(2), and three equivalent Ge(1) atoms. There is one shorter (2.58 Å) and two longer (2.78 Å) Ni(1)-Ni(1) bond lengths. The Ni(1)-Ge(2) bond length is 2.39 Å. There are two shorter (2.39 Å) and one longer (2.40 Å) Ni(1)-Ge(1) bond length. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Sc(2), two equivalent Sc(1), and six equivalent Ni(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Sc(2), four equivalent Sc(1), two equivalent Ni(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.57 Å.