Nd2NiGe3 is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. Nd(1) is bonded to three equivalent Ni(1), three equivalent Ge(1), three equivalent Ge(2), and three equivalent Ge(3) atoms to form a mixture of face and edge-sharing NdNi3Ge9 cuboctahedra. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ge(2) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ni(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ge(1) atoms.
Nd2NiGe3 is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. Nd(1) is bonded to three equivalent Ni(1), three equivalent Ge(1), three equivalent Ge(2), and three equivalent Ge(3) atoms to form a mixture of face and edge-sharing NdNi3Ge9 cuboctahedra. All Nd(1)-Ni(1) bond lengths are 3.12 Å. All Nd(1)-Ge(1) bond lengths are 3.30 Å. All Nd(1)-Ge(2) bond lengths are 3.12 Å. All Nd(1)-Ge(3) bond lengths are 3.30 Å. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ge(2) atoms. All Ni(1)-Ge(2) bond lengths are 2.45 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ge(3) atoms. All Ge(1)-Ge(3) bond lengths are 2.45 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ni(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to six equivalent Nd(1) and three equivalent Ge(1) atoms.