Pr4Pd10In21 crystallizes in the monoclinic C2/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 14-coordinate geometry to two equivalent Pd(2), two equivalent Pd(3), one In(10), one In(5), one In(7), two equivalent In(2), two equivalent In(8), and three equivalent In(3) atoms. In the second Pr site, Pr(2) is bonded in a 15-coordinate geometry to two equivalent Pd(1), two equivalent Pd(4), one In(1), one In(7), one In(8), one In(9), two equivalent In(10), two equivalent In(4), and three equivalent In(6) atoms. There are five inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to two equivalent Pr(2), one In(10), one In(9), two equivalent In(8), and three equivalent In(6) atoms. In the second Pd site, Pd(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), one In(2), one In(5), two equivalent In(7), and three equivalent In(3) atoms. In the third Pd site, Pd(3) is bonded in a 10-coordinate geometry to two equivalent Pr(1), one In(3), one In(8), two equivalent In(1), two equivalent In(10), and two equivalent In(5) atoms. In the fourth Pd site, Pd(4) is bonded in a 9-coordinate geometry to two equivalent Pr(2), one In(10), one In(4), one In(5), two equivalent In(1), and two equivalent In(7) atoms. In the fifth Pd site, Pd(5) is bonded in a 9-coordinate geometry to one In(7), two equivalent In(11), two equivalent In(2), two equivalent In(4), and two equivalent In(9) atoms. There are eleven inequivalent In sites. In the first In site, In(1) is bonded in a 3-coordinate geometry to one Pr(2), two equivalent Pd(3), and two equivalent Pd(4) atoms. In the second In site, In(2) is bonded in a 5-coordinate geometry to two equivalent Pr(1), one Pd(2), and two equivalent Pd(5) atoms. In the third In site, In(3) is bonded in a 12-coordinate geometry to three equivalent Pr(1), one Pd(3), three equivalent Pd(2), one In(7), two equivalent In(3), and two equivalent In(5) atoms. In the fourth In site, In(4) is bonded in a 5-coordinate geometry to two equivalent Pr(2), one Pd(4), and two equivalent Pd(5) atoms. In the fifth In site, In(5) is bonded in a 4-coordinate geometry to one Pr(1), one Pd(2), one Pd(4), two equivalent Pd(3), and two equivalent In(3) atoms. In the sixth In site, In(6) is bonded in a 3-coordinate geometry to three equivalent Pr(2) and three equivalent Pd(1) atoms. In the seventh In site, In(7) is bonded in a 5-coordinate geometry to one Pr(1), one Pr(2), one Pd(5), two equivalent Pd(2), two equivalent Pd(4), and one In(3) atom. In the eighth In site, In(8) is bonded in a 3-coordinate geometry to one Pr(2), two equivalent Pr(1), one Pd(3), and two equivalent Pd(1) atoms. In the ninth In site, In(9) is bonded in a 3-coordinate geometry to one Pr(2), one Pd(1), and two equivalent Pd(5) atoms. In the tenth In site, In(10) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Pr(2), one Pd(1), one Pd(4), and two equivalent Pd(3) atoms. In the eleventh In site, In(11) is bonded in a 4-coordinate geometry to four equivalent Pd(5) atoms.
Pr4Pd10In21 crystallizes in the monoclinic C2/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 14-coordinate geometry to two equivalent Pd(2), two equivalent Pd(3), one In(10), one In(5), one In(7), two equivalent In(2), two equivalent In(8), and three equivalent In(3) atoms. Both Pr(1)-Pd(2) bond lengths are 3.42 Å. Both Pr(1)-Pd(3) bond lengths are 3.50 Å. The Pr(1)-In(10) bond length is 3.55 Å. The Pr(1)-In(5) bond length is 3.40 Å. The Pr(1)-In(7) bond length is 3.63 Å. Both Pr(1)-In(2) bond lengths are 3.22 Å. Both Pr(1)-In(8) bond lengths are 3.30 Å. There are two shorter (3.37 Å) and one longer (3.56 Å) Pr(1)-In(3) bond length. In the second Pr site, Pr(2) is bonded in a 15-coordinate geometry to two equivalent Pd(1), two equivalent Pd(4), one In(1), one In(7), one In(8), one In(9), two equivalent In(10), two equivalent In(4), and three equivalent In(6) atoms. Both Pr(2)-Pd(1) bond lengths are 3.46 Å. Both Pr(2)-Pd(4) bond lengths are 3.36 Å. The Pr(2)-In(1) bond length is 3.49 Å. The Pr(2)-In(7) bond length is 3.62 Å. The Pr(2)-In(8) bond length is 3.48 Å. The Pr(2)-In(9) bond length is 3.90 Å. Both Pr(2)-In(10) bond lengths are 3.36 Å. Both Pr(2)-In(4) bond lengths are 3.22 Å. There are two shorter (3.33 Å) and one longer (3.49 Å) Pr(2)-In(6) bond length. There are five inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 7-coordinate geometry to two equivalent Pr(2), one In(10), one In(9), two equivalent In(8), and three equivalent In(6) atoms. The Pd(1)-In(10) bond length is 2.85 Å. The Pd(1)-In(9) bond length is 2.71 Å. Both Pd(1)-In(8) bond lengths are 2.78 Å. There are two shorter (2.81 Å) and one longer (2.85 Å) Pd(1)-In(6) bond length. In the second Pd site, Pd(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), one In(2), one In(5), two equivalent In(7), and three equivalent In(3) atoms. The Pd(2)-In(2) bond length is 2.79 Å. The Pd(2)-In(5) bond length is 2.82 Å. Both Pd(2)-In(7) bond lengths are 2.89 Å. There is one shorter (2.82 Å) and two longer (2.84 Å) Pd(2)-In(3) bond lengths. In the third Pd site, Pd(3) is bonded in a 10-coordinate geometry to two equivalent Pr(1), one In(3), one In(8), two equivalent In(1), two equivalent In(10), and two equivalent In(5) atoms. The Pd(3)-In(3) bond length is 2.94 Å. The Pd(3)-In(8) bond length is 2.85 Å. There is one shorter (2.86 Å) and one longer (3.24 Å) Pd(3)-In(1) bond length. Both Pd(3)-In(10) bond lengths are 2.84 Å. Both Pd(3)-In(5) bond lengths are 2.80 Å. In the fourth Pd site, Pd(4) is bonded in a 9-coordinate geometry to two equivalent Pr(2), one In(10), one In(4), one In(5), two equivalent In(1), and two equivalent In(7) atoms. The Pd(4)-In(10) bond length is 2.85 Å. The Pd(4)-In(4) bond length is 2.76 Å. The Pd(4)-In(5) bond length is 2.76 Å. Both Pd(4)-In(1) bond lengths are 2.87 Å. Both Pd(4)-In(7) bond lengths are 2.90 Å. In the fifth Pd site, Pd(5) is bonded in a 9-coordinate geometry to one In(7), two equivalent In(11), two equivalent In(2), two equivalent In(4), and two equivalent In(9) atoms. The Pd(5)-In(7) bond length is 2.83 Å. Both Pd(5)-In(11) bond lengths are 2.85 Å. Both Pd(5)-In(2) bond lengths are 2.90 Å. Both Pd(5)-In(4) bond lengths are 2.91 Å. There is one shorter (2.86 Å) and one longer (2.88 Å) Pd(5)-In(9) bond length. There are eleven inequivalent In sites. In the first In site, In(1) is bonded in a 3-coordinate geometry to one Pr(2), two equivalent Pd(3), and two equivalent Pd(4) atoms. In the second In site, In(2) is bonded in a 5-coordinate geometry to two equivalent Pr(1), one Pd(2), and two equivalent Pd(5) atoms. In the third In site, In(3) is bonded in a 12-coordinate geometry to three equivalent Pr(1), one Pd(3), three equivalent Pd(2), one In(7), two equivalent In(3), and two equivalent In(5) atoms. The In(3)-In(7) bond length is 3.20 Å. Both In(3)-In(3) bond lengths are 3.31 Å. Both In(3)-In(5) bond lengths are 3.21 Å. In the fourth In site, In(4) is bonded in a 5-coordinate geometry to two equivalent Pr(2), one Pd(4), and two equivalent Pd(5) atoms. In the fifth In site, In(5) is bonded in a 4-coordinate geometry to one Pr(1), one Pd(2), one Pd(4), two equivalent Pd(3), and two equivalent In(3) atoms. In the sixth In site, In(6) is bonded in a 3-coordinate geometry to three equivalent Pr(2) and three equivalent Pd(1) atoms. In the seventh In site, In(7) is bonded in a 5-coordinate geometry to one Pr(1), one Pr(2), one Pd(5), two equivalent Pd(2), two equivalent Pd(4), and one In(3) atom. In the eighth In site, In(8) is bonded in a 3-coordinate geometry to one Pr(2), two equivalent Pr(1), one Pd(3), and two equivalent Pd(1) atoms. In the ninth In site, In(9) is bonded in a 3-coordinate geometry to one Pr(2), one Pd(1), and two equivalent Pd(5) atoms. In the tenth In site, In(10) is bonded in a 4-coordinate geometry to one Pr(1), two equivalent Pr(2), one Pd(1), one Pd(4), and two equivalent Pd(3) atoms. In the eleventh In site, In(11) is bonded in a 4-coordinate geometry to four equivalent Pd(5) atoms.