Pr2(CuSn)3 crystallizes in the tetragonal P4/mmm space group. Pr(1) is bonded to four equivalent Pr(1), one Cu(1), and one Sn(1) atom to form distorted PrPr4CuSn octahedra that share  a cornercorner with one Cu(2)Cu4Sn2 octahedra,  a cornercorner with one Sn(2)Cu2Sn4 octahedra, corners with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Cu(1)PrCu4Sn octahedra, and edges with four equivalent Sn(1)PrCuSn4 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one Pr(1), four equivalent Cu(1), and one Sn(2) atom to form distorted CuPrCu4Sn octahedra that share  a cornercorner with one Sn(1)PrCuSn4 octahedra, corners with five equivalent Cu(1)PrCu4Sn octahedra, edges with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Cu(1)PrCu4Sn octahedra, and edges with four equivalent Sn(2)Cu2Sn4 octahedra. The corner-sharing octahedra are not tilted. In the second Cu site, Cu(2) is bonded to four equivalent Cu(2) and two equivalent Sn(1) atoms to form distorted CuCu4Sn2 octahedra that share corners with two equivalent Pr(1)Pr4CuSn octahedra, corners with four equivalent Cu(2)Cu4Sn2 octahedra, edges with four equivalent Cu(2)Cu4Sn2 octahedra, and edges with eight equivalent Sn(1)PrCuSn4 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one Pr(1), one Cu(2), and four equivalent Sn(1) atoms to form distorted SnPrCuSn4 octahedra that share  a cornercorner with one Cu(1)PrCu4Sn octahedra, corners with five equivalent Sn(1)PrCuSn4 octahedra, edges with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Cu(2)Cu4Sn2 octahedra, and edges with four equivalent Sn(1)PrCuSn4 octahedra. The corner-sharing octahedra are not tilted. In the second Sn site, Sn(2) is bonded to two equivalent Cu(1) and four equivalent Sn(2) atoms to form SnCu2Sn4 octahedra that share corners with two equivalent Pr(1)Pr4CuSn octahedra, corners with four equivalent Sn(2)Cu2Sn4 octahedra, edges with four equivalent Sn(2)Cu2Sn4 octahedra, and edges with eight equivalent Cu(1)PrCu4Sn octahedra. The corner-sharing octahedra are not tilted.
Pr2(CuSn)3 crystallizes in the tetragonal P4/mmm space group. Pr(1) is bonded to four equivalent Pr(1), one Cu(1), and one Sn(1) atom to form distorted PrPr4CuSn octahedra that share  a cornercorner with one Cu(2)Cu4Sn2 octahedra,  a cornercorner with one Sn(2)Cu2Sn4 octahedra, corners with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Cu(1)PrCu4Sn octahedra, and edges with four equivalent Sn(1)PrCuSn4 octahedra. The corner-sharing octahedra are not tilted. All Pr(1)-Pr(1) bond lengths are 3.02 Å. The Pr(1)-Cu(1) bond length is 2.88 Å. The Pr(1)-Sn(1) bond length is 3.32 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one Pr(1), four equivalent Cu(1), and one Sn(2) atom to form distorted CuPrCu4Sn octahedra that share  a cornercorner with one Sn(1)PrCuSn4 octahedra, corners with five equivalent Cu(1)PrCu4Sn octahedra, edges with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Cu(1)PrCu4Sn octahedra, and edges with four equivalent Sn(2)Cu2Sn4 octahedra. The corner-sharing octahedra are not tilted. All Cu(1)-Cu(1) bond lengths are 3.02 Å. The Cu(1)-Sn(2) bond length is 2.66 Å. In the second Cu site, Cu(2) is bonded to four equivalent Cu(2) and two equivalent Sn(1) atoms to form distorted CuCu4Sn2 octahedra that share corners with two equivalent Pr(1)Pr4CuSn octahedra, corners with four equivalent Cu(2)Cu4Sn2 octahedra, edges with four equivalent Cu(2)Cu4Sn2 octahedra, and edges with eight equivalent Sn(1)PrCuSn4 octahedra. The corner-sharing octahedra are not tilted. All Cu(2)-Cu(2) bond lengths are 3.02 Å. Both Cu(2)-Sn(1) bond lengths are 2.56 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one Pr(1), one Cu(2), and four equivalent Sn(1) atoms to form distorted SnPrCuSn4 octahedra that share  a cornercorner with one Cu(1)PrCu4Sn octahedra, corners with five equivalent Sn(1)PrCuSn4 octahedra, edges with four equivalent Pr(1)Pr4CuSn octahedra, edges with four equivalent Cu(2)Cu4Sn2 octahedra, and edges with four equivalent Sn(1)PrCuSn4 octahedra. The corner-sharing octahedra are not tilted. All Sn(1)-Sn(1) bond lengths are 3.02 Å. In the second Sn site, Sn(2) is bonded to two equivalent Cu(1) and four equivalent Sn(2) atoms to form SnCu2Sn4 octahedra that share corners with two equivalent Pr(1)Pr4CuSn octahedra, corners with four equivalent Sn(2)Cu2Sn4 octahedra, edges with four equivalent Sn(2)Cu2Sn4 octahedra, and edges with eight equivalent Cu(1)PrCu4Sn octahedra. The corner-sharing octahedra are not tilted. All Sn(2)-Sn(2) bond lengths are 3.02 Å.