Pr2NiGe3 is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. Pr(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 PrNi3Ge9 cuboctahedra. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Pr(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 Pr(1) and three equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ni(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ge(1) atoms.
Pr2NiGe3 is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. Pr(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 PrNi3Ge9 cuboctahedra. All Pr(1)-Ni(1) bond lengths are 3.12 Å. All Pr(1)-Ge(1) bond lengths are 3.34 Å. All Pr(1)-Ge(2) bond lengths are 3.12 Å. All Pr(1)-Ge(3) bond lengths are 3.34 Å. Ni(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ge(2) atoms. All Ni(1)-Ge(2) bond lengths are 2.46 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ge(3) atoms. All Ge(1)-Ge(3) bond lengths are 2.46 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ni(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to six equivalent Pr(1) and three equivalent Ge(1) atoms.