Dy4FeSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(3) atoms. In the second Dy site, Dy(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(4) atoms. In the third Dy site, Dy(3) is bonded in a 14-coordinate geometry to four equivalent Fe(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(1) atoms. In the fourth Dy site, Dy(4) is bonded in a 10-coordinate geometry to two equivalent Sn(3), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(2) atoms. Fe(1) is bonded in a 5-coordinate geometry to four equivalent Dy(3), one Sn(1), two equivalent Sn(5), and two equivalent Sn(7) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(3), one Fe(1), and two equivalent Sn(4) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Dy(1), four equivalent Dy(4), and two equivalent Sn(3) atoms. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to two equivalent Dy(4), four equivalent Dy(1), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), and two equivalent Sn(1) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to two equivalent Dy(1), two equivalent Dy(3), two equivalent Fe(1), and four equivalent Sn(7) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Dy(2), two equivalent Dy(4), and four equivalent Sn(8) atoms. In the seventh Sn site, Sn(7) is bonded in a 10-coordinate geometry to two equivalent Dy(1), two equivalent Dy(3), two equivalent Fe(1), and four equivalent Sn(5) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Dy(2), two equivalent Dy(4), and four equivalent Sn(6) atoms.
Dy4FeSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(3) atoms. Both Dy(1)-Sn(2) bond lengths are 3.48 Å. Both Dy(1)-Sn(5) bond lengths are 3.22 Å. Both Dy(1)-Sn(7) bond lengths are 3.20 Å. All Dy(1)-Sn(3) bond lengths are 3.19 Å. In the second Dy site, Dy(2) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(4) atoms. Both Dy(2)-Sn(1) bond lengths are 3.30 Å. Both Dy(2)-Sn(6) bond lengths are 3.28 Å. Both Dy(2)-Sn(8) bond lengths are 3.32 Å. All Dy(2)-Sn(4) bond lengths are 3.17 Å. In the third Dy site, Dy(3) is bonded in a 14-coordinate geometry to four equivalent Fe(1), two equivalent Sn(4), two equivalent Sn(5), two equivalent Sn(7), and four equivalent Sn(1) atoms. All Dy(3)-Fe(1) bond lengths are 3.46 Å. Both Dy(3)-Sn(4) bond lengths are 3.71 Å. Both Dy(3)-Sn(5) bond lengths are 3.43 Å. Both Dy(3)-Sn(7) bond lengths are 3.44 Å. All Dy(3)-Sn(1) bond lengths are 3.29 Å. In the fourth Dy site, Dy(4) is bonded in a 10-coordinate geometry to two equivalent Sn(3), two equivalent Sn(6), two equivalent Sn(8), and four equivalent Sn(2) atoms. Both Dy(4)-Sn(3) bond lengths are 3.50 Å. Both Dy(4)-Sn(6) bond lengths are 3.35 Å. Both Dy(4)-Sn(8) bond lengths are 3.30 Å. All Dy(4)-Sn(2) bond lengths are 3.19 Å. Fe(1) is bonded in a 5-coordinate geometry to four equivalent Dy(3), one Sn(1), two equivalent Sn(5), and two equivalent Sn(7) atoms. The Fe(1)-Sn(1) bond length is 2.47 Å. Both Fe(1)-Sn(5) bond lengths are 2.51 Å. Both Fe(1)-Sn(7) bond lengths are 2.49 Å. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Dy(2), four equivalent Dy(3), one Fe(1), and two equivalent Sn(4) atoms. Both Sn(1)-Sn(4) bond lengths are 2.95 Å. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Dy(1), four equivalent Dy(4), and two equivalent Sn(3) atoms. Both Sn(2)-Sn(3) bond lengths are 3.03 Å. In the third Sn site, Sn(3) is bonded in a 8-coordinate geometry to two equivalent Dy(4), four equivalent Dy(1), and two equivalent Sn(2) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Dy(3), four equivalent Dy(2), and two equivalent Sn(1) atoms. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to two equivalent Dy(1), two equivalent Dy(3), two equivalent Fe(1), and four equivalent Sn(7) atoms. All Sn(5)-Sn(7) bond lengths are 3.13 Å. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Dy(2), two equivalent Dy(4), and four equivalent Sn(8) atoms. All Sn(6)-Sn(8) bond lengths are 3.13 Å. In the seventh Sn site, Sn(7) is bonded in a 10-coordinate geometry to two equivalent Dy(1), two equivalent Dy(3), two equivalent Fe(1), and four equivalent Sn(5) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Dy(2), two equivalent Dy(4), and four equivalent Sn(6) atoms.