Pr2Cu4Sn5 crystallizes in the tetragonal I4mm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 13-coordinate geometry to one Cu(2), four equivalent Cu(1), four equivalent Sn(2), and four equivalent Sn(3) atoms. In the second Pr site, Pr(2) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Cu(2), four equivalent Cu(3), and four equivalent Sn(1) atoms. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent Cu(2), and two equivalent Sn(3) atoms. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to one Pr(1), four equivalent Pr(2), one Cu(3), and four equivalent Cu(1) atoms. In the third Cu site, Cu(3) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Cu(2), and four equivalent Sn(1) atoms. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), two equivalent Cu(3), one Sn(2), and four equivalent Sn(1) atoms. In the second Sn site, Sn(2) is bonded in a 7-coordinate geometry to two equivalent Pr(1), one Sn(1), and four equivalent Sn(2) atoms. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to four equivalent Pr(1) and four equivalent Cu(1) atoms.
Pr2Cu4Sn5 crystallizes in the tetragonal I4mm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 13-coordinate geometry to one Cu(2), four equivalent Cu(1), four equivalent Sn(2), and four equivalent Sn(3) atoms. The Pr(1)-Cu(2) bond length is 3.25 Å. All Pr(1)-Cu(1) bond lengths are 3.22 Å. All Pr(1)-Sn(2) bond lengths are 3.28 Å. All Pr(1)-Sn(3) bond lengths are 3.31 Å. In the second Pr site, Pr(2) is bonded in a 16-coordinate geometry to four equivalent Cu(1), four equivalent Cu(2), four equivalent Cu(3), and four equivalent Sn(1) atoms. All Pr(2)-Cu(1) bond lengths are 3.17 Å. All Pr(2)-Cu(2) bond lengths are 3.44 Å. All Pr(2)-Cu(3) bond lengths are 3.40 Å. All Pr(2)-Sn(1) bond lengths are 3.41 Å. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent Cu(2), and two equivalent Sn(3) atoms. Both Cu(1)-Cu(2) bond lengths are 2.46 Å. Both Cu(1)-Sn(3) bond lengths are 2.69 Å. In the second Cu site, Cu(2) is bonded in a 10-coordinate geometry to one Pr(1), four equivalent Pr(2), one Cu(3), and four equivalent Cu(1) atoms. The Cu(2)-Cu(3) bond length is 2.38 Å. In the third Cu site, Cu(3) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Cu(2), and four equivalent Sn(1) atoms. All Cu(3)-Sn(1) bond lengths are 2.68 Å. There are three inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), two equivalent Cu(3), one Sn(2), and four equivalent Sn(1) atoms. The Sn(1)-Sn(2) bond length is 2.87 Å. All Sn(1)-Sn(1) bond lengths are 3.20 Å. In the second Sn site, Sn(2) is bonded in a 7-coordinate geometry to two equivalent Pr(1), one Sn(1), and four equivalent Sn(2) atoms. All Sn(2)-Sn(2) bond lengths are 3.20 Å. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to four equivalent Pr(1) and four equivalent Cu(1) atoms.