Dy11Si4In6 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to four equivalent In(1), one Si(1), one Si(2), and one Si(3) atom to form a mixture of distorted corner, edge, and face-sharing DyIn4Si3 pentagonal bipyramids. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to two equivalent In(1), two equivalent In(2), one Si(3), and two equivalent Si(1) atoms. In the third Dy site, Dy(3) is bonded in a 7-coordinate geometry to one In(2), two equivalent In(1), two equivalent Si(1), and two equivalent Si(2) atoms. In the fourth Dy site, Dy(4) is bonded in a 9-coordinate geometry to four equivalent In(1), four equivalent In(2), and one Si(2) atom. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to one Dy(3), one Dy(4), two equivalent Dy(2), four equivalent Dy(1), one In(1), and one In(2) atom. In the second In site, In(2) is bonded in a 11-coordinate geometry to one Dy(3), two equivalent Dy(4), four equivalent Dy(2), two equivalent In(1), and two equivalent In(2) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Dy(1), two equivalent Dy(3), and four equivalent Dy(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Dy(4), four equivalent Dy(1), and four equivalent Dy(3) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent Dy(2) atoms.
Dy11Si4In6 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to four equivalent In(1), one Si(1), one Si(2), and one Si(3) atom to form a mixture of distorted corner, edge, and face-sharing DyIn4Si3 pentagonal bipyramids. There are two shorter (3.34 Å) and two longer (3.41 Å) Dy(1)-In(1) bond lengths. The Dy(1)-Si(1) bond length is 3.21 Å. The Dy(1)-Si(2) bond length is 3.05 Å. The Dy(1)-Si(3) bond length is 3.03 Å. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to two equivalent In(1), two equivalent In(2), one Si(3), and two equivalent Si(1) atoms. Both Dy(2)-In(1) bond lengths are 3.07 Å. Both Dy(2)-In(2) bond lengths are 3.32 Å. The Dy(2)-Si(3) bond length is 2.99 Å. Both Dy(2)-Si(1) bond lengths are 2.96 Å. In the third Dy site, Dy(3) is bonded in a 7-coordinate geometry to one In(2), two equivalent In(1), two equivalent Si(1), and two equivalent Si(2) atoms. The Dy(3)-In(2) bond length is 3.30 Å. Both Dy(3)-In(1) bond lengths are 3.43 Å. Both Dy(3)-Si(1) bond lengths are 2.80 Å. Both Dy(3)-Si(2) bond lengths are 3.35 Å. In the fourth Dy site, Dy(4) is bonded in a 9-coordinate geometry to four equivalent In(1), four equivalent In(2), and one Si(2) atom. All Dy(4)-In(1) bond lengths are 3.34 Å. All Dy(4)-In(2) bond lengths are 3.42 Å. The Dy(4)-Si(2) bond length is 3.39 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to one Dy(3), one Dy(4), two equivalent Dy(2), four equivalent Dy(1), one In(1), and one In(2) atom. The In(1)-In(1) bond length is 2.93 Å. The In(1)-In(2) bond length is 3.03 Å. In the second In site, In(2) is bonded in a 11-coordinate geometry to one Dy(3), two equivalent Dy(4), four equivalent Dy(2), two equivalent In(1), and two equivalent In(2) atoms. Both In(2)-In(2) bond lengths are 2.94 Å. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Dy(1), two equivalent Dy(3), and four equivalent Dy(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Dy(4), four equivalent Dy(1), and four equivalent Dy(3) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent Dy(1) and four equivalent Dy(2) atoms.