Pr5Cl12 crystallizes in the trigonal P-3 space group. There are eight inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to three equivalent Cl(1), three equivalent Cl(3), and three equivalent Cl(6) atoms. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to three equivalent Cl(1) and six equivalent Cl(2) atoms. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to three equivalent Cl(1), three equivalent Cl(2), and three equivalent Cl(3) atoms. In the fourth Pr site, Pr(4) is bonded in a 9-coordinate geometry to three equivalent Cl(3), three equivalent Cl(4), and three equivalent Cl(6) atoms. In the fifth Pr site, Pr(5) is bonded in a 9-coordinate geometry to three equivalent Cl(4) and six equivalent Cl(5) atoms. In the sixth Pr site, Pr(6) is bonded in a distorted hexagonal planar geometry to three equivalent Cl(4) and three equivalent Cl(6) atoms. In the seventh Pr site, Pr(7) is bonded in a 9-coordinate geometry to three equivalent Cl(4), three equivalent Cl(5), and three equivalent Cl(6) atoms. In the eighth Pr site, Pr(8) is bonded in a 6-coordinate geometry to six equivalent Cl(5) atoms. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(2), and one Pr(3) atom. In the second Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to one Pr(3) and two equivalent Pr(2) atoms. In the third Cl site, Cl(3) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(3), and one Pr(4) atom. In the fourth Cl site, Cl(4) is bonded to one Pr(4), one Pr(5), one Pr(6), and one Pr(7) atom to form a mixture of distorted corner and edge-sharing ClPr4 tetrahedra. In the fifth Cl site, Cl(5) is bonded to one Pr(7), one Pr(8), and two equivalent Pr(5) atoms to form a mixture of distorted corner and edge-sharing ClPr4 tetrahedra. In the sixth Cl site, Cl(6) is bonded to one Pr(1), one Pr(4), one Pr(6), and one Pr(7) atom to form a mixture of distorted corner and edge-sharing ClPr4 tetrahedra.
Pr5Cl12 crystallizes in the trigonal P-3 space group. There are eight inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to three equivalent Cl(1), three equivalent Cl(3), and three equivalent Cl(6) atoms. All Pr(1)-Cl(1) bond lengths are 2.85 Å. All Pr(1)-Cl(3) bond lengths are 3.21 Å. All Pr(1)-Cl(6) bond lengths are 3.01 Å. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to three equivalent Cl(1) and six equivalent Cl(2) atoms. All Pr(2)-Cl(1) bond lengths are 2.86 Å. There are three shorter (2.86 Å) and three longer (3.31 Å) Pr(2)-Cl(2) bond lengths. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to three equivalent Cl(1), three equivalent Cl(2), and three equivalent Cl(3) atoms. All Pr(3)-Cl(1) bond lengths are 3.29 Å. All Pr(3)-Cl(2) bond lengths are 2.84 Å. All Pr(3)-Cl(3) bond lengths are 2.90 Å. In the fourth Pr site, Pr(4) is bonded in a 9-coordinate geometry to three equivalent Cl(3), three equivalent Cl(4), and three equivalent Cl(6) atoms. All Pr(4)-Cl(3) bond lengths are 2.83 Å. All Pr(4)-Cl(4) bond lengths are 2.92 Å. All Pr(4)-Cl(6) bond lengths are 3.27 Å. In the fifth Pr site, Pr(5) is bonded in a 9-coordinate geometry to three equivalent Cl(4) and six equivalent Cl(5) atoms. All Pr(5)-Cl(4) bond lengths are 2.95 Å. There are three shorter (2.90 Å) and three longer (3.17 Å) Pr(5)-Cl(5) bond lengths. In the sixth Pr site, Pr(6) is bonded in a distorted hexagonal planar geometry to three equivalent Cl(4) and three equivalent Cl(6) atoms. All Pr(6)-Cl(4) bond lengths are 2.95 Å. All Pr(6)-Cl(6) bond lengths are 3.03 Å. In the seventh Pr site, Pr(7) is bonded in a 9-coordinate geometry to three equivalent Cl(4), three equivalent Cl(5), and three equivalent Cl(6) atoms. All Pr(7)-Cl(4) bond lengths are 3.19 Å. All Pr(7)-Cl(5) bond lengths are 2.96 Å. All Pr(7)-Cl(6) bond lengths are 2.93 Å. In the eighth Pr site, Pr(8) is bonded in a 6-coordinate geometry to six equivalent Cl(5) atoms. All Pr(8)-Cl(5) bond lengths are 3.00 Å. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(2), and one Pr(3) atom. In the second Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to one Pr(3) and two equivalent Pr(2) atoms. In the third Cl site, Cl(3) is bonded in a distorted trigonal non-coplanar geometry to one Pr(1), one Pr(3), and one Pr(4) atom. In the fourth Cl site, Cl(4) is bonded to one Pr(4), one Pr(5), one Pr(6), and one Pr(7) atom to form a mixture of distorted corner and edge-sharing ClPr4 tetrahedra. In the fifth Cl site, Cl(5) is bonded to one Pr(7), one Pr(8), and two equivalent Pr(5) atoms to form a mixture of distorted corner and edge-sharing ClPr4 tetrahedra. In the sixth Cl site, Cl(6) is bonded to one Pr(1), one Pr(4), one Pr(6), and one Pr(7) atom to form a mixture of distorted corner and edge-sharing ClPr4 tetrahedra.