Pr2Zn5Sn crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 15-coordinate geometry to one Zn(3), six equivalent Zn(1), six equivalent Zn(2), and two equivalent Sn(1) atoms. In the second Pr site, Pr(2) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), four equivalent Zn(3), and four equivalent Sn(1) atoms. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to one Pr(2), three equivalent Pr(1), one Zn(1), two equivalent Zn(3), and three equivalent Zn(2) atoms. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to two equivalent Pr(2), three equivalent Pr(1), one Zn(3), three equivalent Zn(1), and one Sn(1) atom. In the third Zn site, Zn(3) is bonded in a 1-coordinate geometry to one Pr(1), four equivalent Pr(2), two equivalent Zn(2), four equivalent Zn(1), and one Sn(1) atom. Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Zn(3), and two equivalent Zn(2) atoms.
Pr2Zn5Sn crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 15-coordinate geometry to one Zn(3), six equivalent Zn(1), six equivalent Zn(2), and two equivalent Sn(1) atoms. The Pr(1)-Zn(3) bond length is 3.13 Å. There are four shorter (3.14 Å) and two longer (3.27 Å) Pr(1)-Zn(1) bond lengths. There are four shorter (3.19 Å) and two longer (3.31 Å) Pr(1)-Zn(2) bond lengths. Both Pr(1)-Sn(1) bond lengths are 3.35 Å. In the second Pr site, Pr(2) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), four equivalent Zn(3), and four equivalent Sn(1) atoms. Both Pr(2)-Zn(1) bond lengths are 3.23 Å. All Pr(2)-Zn(2) bond lengths are 3.43 Å. All Pr(2)-Zn(3) bond lengths are 3.63 Å. All Pr(2)-Sn(1) bond lengths are 3.31 Å. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to one Pr(2), three equivalent Pr(1), one Zn(1), two equivalent Zn(3), and three equivalent Zn(2) atoms. The Zn(1)-Zn(1) bond length is 2.55 Å. Both Zn(1)-Zn(3) bond lengths are 2.90 Å. There are two shorter (2.54 Å) and one longer (2.75 Å) Zn(1)-Zn(2) bond length. In the second Zn site, Zn(2) is bonded in a 10-coordinate geometry to two equivalent Pr(2), three equivalent Pr(1), one Zn(3), three equivalent Zn(1), and one Sn(1) atom. The Zn(2)-Zn(3) bond length is 2.55 Å. The Zn(2)-Sn(1) bond length is 2.71 Å. In the third Zn site, Zn(3) is bonded in a 1-coordinate geometry to one Pr(1), four equivalent Pr(2), two equivalent Zn(2), four equivalent Zn(1), and one Sn(1) atom. The Zn(3)-Sn(1) bond length is 2.66 Å. Sn(1) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Zn(3), and two equivalent Zn(2) atoms.