Dy5Sc5(Ir2Si5)4 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 14-coordinate geometry to four equivalent Ir(2), two equivalent Si(9), four equivalent Si(3), and four equivalent Si(6) atoms. In the second Dy site, Dy(2) is bonded in a 14-coordinate geometry to two equivalent Ir(3), two equivalent Ir(4), one Si(10), one Si(11), two equivalent Si(1), two equivalent Si(2), two equivalent Si(4), and two equivalent Si(5) atoms. In the third Dy site, Dy(3) is bonded in a 16-coordinate geometry to one Ir(1), one Ir(2), one Ir(3), one Ir(4), one Si(4), one Si(5), one Si(6), one Si(7), two equivalent Si(10), two equivalent Si(11), two equivalent Si(8), and two equivalent Si(9) atoms. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to four equivalent Ir(4), two equivalent Si(1), two equivalent Si(11), and four equivalent Si(7) atoms to form face-sharing ScSi8Ir4 cuboctahedra. In the second Sc site, Sc(2) is bonded to four equivalent Ir(3), two equivalent Si(10), two equivalent Si(2), and four equivalent Si(6) atoms to form face-sharing ScSi8Ir4 cuboctahedra. In the third Sc site, Sc(3) is bonded to two equivalent Ir(1), two equivalent Ir(2), one Si(8), one Si(9), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms to form distorted face-sharing ScSi8Ir4 cuboctahedra. In the fourth Sc site, Sc(4) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Si(8), four equivalent Si(3), and four equivalent Si(7) atoms. There are four inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Sc(3), two equivalent Sc(4), one Si(3), one Si(4), one Si(7), and two equivalent Si(8) atoms. In the second Ir site, Ir(2) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(1), two equivalent Sc(3), one Si(3), one Si(5), one Si(6), and two equivalent Si(9) atoms. In the third Ir site, Ir(3) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(2), one Si(2), one Si(4), one Si(6), and two equivalent Si(10) atoms. In the fourth Ir site, Ir(4) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(1), one Si(1), one Si(5), one Si(7), and two equivalent Si(11) atoms. There are eleven inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Dy(2), two equivalent Sc(1), two equivalent Ir(4), and one Si(2) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Dy(2), two equivalent Sc(2), two equivalent Ir(3), and one Si(1) atom. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Sc(3), two equivalent Sc(4), one Ir(1), one Ir(2), and one Si(3) atom. In the fourth Si site, Si(4) is bonded in a 8-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(3), one Ir(1), one Ir(3), and one Si(5) atom. In the fifth Si site, Si(5) is bonded in a 8-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(3), one Ir(2), one Ir(4), and one Si(4) atom. In the sixth Si site, Si(6) is bonded in a 8-coordinate geometry to one Dy(3), two equivalent Dy(1), two equivalent Sc(2), one Ir(2), one Ir(3), and one Si(6) atom. In the seventh Si site, Si(7) is bonded in a 2-coordinate geometry to one Dy(3), two equivalent Sc(1), two equivalent Sc(4), one Ir(1), and one Ir(4) atom. In the eighth Si site, Si(8) is bonded in a 8-coordinate geometry to two equivalent Dy(3), one Sc(3), one Sc(4), two equivalent Ir(1), one Si(10), and one Si(11) atom. In the ninth Si site, Si(9) is bonded in a 8-coordinate geometry to one Dy(1), two equivalent Dy(3), one Sc(3), two equivalent Ir(2), one Si(10), and one Si(11) atom. In the tenth Si site, Si(10) is bonded in a 8-coordinate geometry to one Dy(2), two equivalent Dy(3), one Sc(2), two equivalent Ir(3), one Si(8), and one Si(9) atom. In the eleventh Si site, Si(11) is bonded in a 8-coordinate geometry to one Dy(2), two equivalent Dy(3), one Sc(1), two equivalent Ir(4), one Si(8), and one Si(9) atom.
Dy5Sc5(Ir2Si5)4 crystallizes in the orthorhombic Amm2 space group. There are three inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 14-coordinate geometry to four equivalent Ir(2), two equivalent Si(9), four equivalent Si(3), and four equivalent Si(6) atoms. All Dy(1)-Ir(2) bond lengths are 3.20 Å. Both Dy(1)-Si(9) bond lengths are 3.23 Å. All Dy(1)-Si(3) bond lengths are 3.16 Å. All Dy(1)-Si(6) bond lengths are 3.19 Å. In the second Dy site, Dy(2) is bonded in a 14-coordinate geometry to two equivalent Ir(3), two equivalent Ir(4), one Si(10), one Si(11), two equivalent Si(1), two equivalent Si(2), two equivalent Si(4), and two equivalent Si(5) atoms. Both Dy(2)-Ir(3) bond lengths are 3.21 Å. Both Dy(2)-Ir(4) bond lengths are 3.21 Å. The Dy(2)-Si(10) bond length is 3.23 Å. The Dy(2)-Si(11) bond length is 3.23 Å. Both Dy(2)-Si(1) bond lengths are 3.16 Å. Both Dy(2)-Si(2) bond lengths are 3.15 Å. Both Dy(2)-Si(4) bond lengths are 3.19 Å. Both Dy(2)-Si(5) bond lengths are 3.19 Å. In the third Dy site, Dy(3) is bonded in a 16-coordinate geometry to one Ir(1), one Ir(2), one Ir(3), one Ir(4), one Si(4), one Si(5), one Si(6), one Si(7), two equivalent Si(10), two equivalent Si(11), two equivalent Si(8), and two equivalent Si(9) atoms. The Dy(3)-Ir(1) bond length is 3.11 Å. The Dy(3)-Ir(2) bond length is 3.11 Å. The Dy(3)-Ir(3) bond length is 3.09 Å. The Dy(3)-Ir(4) bond length is 3.09 Å. The Dy(3)-Si(4) bond length is 3.26 Å. The Dy(3)-Si(5) bond length is 3.26 Å. The Dy(3)-Si(6) bond length is 3.26 Å. The Dy(3)-Si(7) bond length is 3.26 Å. Both Dy(3)-Si(10) bond lengths are 2.87 Å. Both Dy(3)-Si(11) bond lengths are 2.87 Å. Both Dy(3)-Si(8) bond lengths are 2.88 Å. Both Dy(3)-Si(9) bond lengths are 2.87 Å. There are four inequivalent Sc sites. In the first Sc site, Sc(1) is bonded to four equivalent Ir(4), two equivalent Si(1), two equivalent Si(11), and four equivalent Si(7) atoms to form face-sharing ScSi8Ir4 cuboctahedra. All Sc(1)-Ir(4) bond lengths are 3.01 Å. Both Sc(1)-Si(1) bond lengths are 2.83 Å. Both Sc(1)-Si(11) bond lengths are 3.00 Å. All Sc(1)-Si(7) bond lengths are 2.92 Å. In the second Sc site, Sc(2) is bonded to four equivalent Ir(3), two equivalent Si(10), two equivalent Si(2), and four equivalent Si(6) atoms to form face-sharing ScSi8Ir4 cuboctahedra. All Sc(2)-Ir(3) bond lengths are 3.01 Å. Both Sc(2)-Si(10) bond lengths are 3.00 Å. Both Sc(2)-Si(2) bond lengths are 2.82 Å. All Sc(2)-Si(6) bond lengths are 2.92 Å. In the third Sc site, Sc(3) is bonded to two equivalent Ir(1), two equivalent Ir(2), one Si(8), one Si(9), two equivalent Si(3), two equivalent Si(4), and two equivalent Si(5) atoms to form distorted face-sharing ScSi8Ir4 cuboctahedra. Both Sc(3)-Ir(1) bond lengths are 3.01 Å. Both Sc(3)-Ir(2) bond lengths are 3.01 Å. The Sc(3)-Si(8) bond length is 2.99 Å. The Sc(3)-Si(9) bond length is 3.01 Å. Both Sc(3)-Si(3) bond lengths are 2.82 Å. Both Sc(3)-Si(4) bond lengths are 2.92 Å. Both Sc(3)-Si(5) bond lengths are 2.92 Å. In the fourth Sc site, Sc(4) is bonded in a 14-coordinate geometry to four equivalent Ir(1), two equivalent Si(8), four equivalent Si(3), and four equivalent Si(7) atoms. All Sc(4)-Ir(1) bond lengths are 3.19 Å. Both Sc(4)-Si(8) bond lengths are 3.21 Å. All Sc(4)-Si(3) bond lengths are 3.14 Å. All Sc(4)-Si(7) bond lengths are 3.17 Å. There are four inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Sc(3), two equivalent Sc(4), one Si(3), one Si(4), one Si(7), and two equivalent Si(8) atoms. The Ir(1)-Si(3) bond length is 2.40 Å. The Ir(1)-Si(4) bond length is 2.48 Å. The Ir(1)-Si(7) bond length is 2.39 Å. Both Ir(1)-Si(8) bond lengths are 2.38 Å. In the second Ir site, Ir(2) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(1), two equivalent Sc(3), one Si(3), one Si(5), one Si(6), and two equivalent Si(9) atoms. The Ir(2)-Si(3) bond length is 2.42 Å. The Ir(2)-Si(5) bond length is 2.46 Å. The Ir(2)-Si(6) bond length is 2.41 Å. Both Ir(2)-Si(9) bond lengths are 2.39 Å. In the third Ir site, Ir(3) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(2), one Si(2), one Si(4), one Si(6), and two equivalent Si(10) atoms. The Ir(3)-Si(2) bond length is 2.41 Å. The Ir(3)-Si(4) bond length is 2.41 Å. The Ir(3)-Si(6) bond length is 2.47 Å. Both Ir(3)-Si(10) bond lengths are 2.38 Å. In the fourth Ir site, Ir(4) is bonded in a 10-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(1), one Si(1), one Si(5), one Si(7), and two equivalent Si(11) atoms. The Ir(4)-Si(1) bond length is 2.41 Å. The Ir(4)-Si(5) bond length is 2.41 Å. The Ir(4)-Si(7) bond length is 2.48 Å. Both Ir(4)-Si(11) bond lengths are 2.38 Å. There are eleven inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Dy(2), two equivalent Sc(1), two equivalent Ir(4), and one Si(2) atom. The Si(1)-Si(2) bond length is 2.38 Å. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to four equivalent Dy(2), two equivalent Sc(2), two equivalent Ir(3), and one Si(1) atom. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Sc(3), two equivalent Sc(4), one Ir(1), one Ir(2), and one Si(3) atom. The Si(3)-Si(3) bond length is 2.35 Å. In the fourth Si site, Si(4) is bonded in a 8-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(3), one Ir(1), one Ir(3), and one Si(5) atom. The Si(4)-Si(5) bond length is 2.38 Å. In the fifth Si site, Si(5) is bonded in a 8-coordinate geometry to one Dy(3), two equivalent Dy(2), two equivalent Sc(3), one Ir(2), one Ir(4), and one Si(4) atom. In the sixth Si site, Si(6) is bonded in a 8-coordinate geometry to one Dy(3), two equivalent Dy(1), two equivalent Sc(2), one Ir(2), one Ir(3), and one Si(6) atom. The Si(6)-Si(6) bond length is 2.38 Å. In the seventh Si site, Si(7) is bonded in a 2-coordinate geometry to one Dy(3), two equivalent Sc(1), two equivalent Sc(4), one Ir(1), and one Ir(4) atom. In the eighth Si site, Si(8) is bonded in a 8-coordinate geometry to two equivalent Dy(3), one Sc(3), one Sc(4), two equivalent Ir(1), one Si(10), and one Si(11) atom. The Si(8)-Si(10) bond length is 2.79 Å. The Si(8)-Si(11) bond length is 2.78 Å. In the ninth Si site, Si(9) is bonded in a 8-coordinate geometry to one Dy(1), two equivalent Dy(3), one Sc(3), two equivalent Ir(2), one Si(10), and one Si(11) atom. The Si(9)-Si(10) bond length is 2.78 Å. The Si(9)-Si(11) bond length is 2.78 Å. In the tenth Si site, Si(10) is bonded in a 8-coordinate geometry to one Dy(2), two equivalent Dy(3), one Sc(2), two equivalent Ir(3), one Si(8), and one Si(9) atom. In the eleventh Si site, Si(11) is bonded in a 8-coordinate geometry to one Dy(2), two equivalent Dy(3), one Sc(1), two equivalent Ir(4), one Si(8), and one Si(9) atom.