Dy5CoSb2 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to one Co(1) and four equivalent Sb(1) atoms to form a mixture of distorted corner and edge-sharing DyCoSb4 trigonal bipyramids. In the second Dy site, Dy(2) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Sb(1) atoms. In the third Dy site, Dy(3) is bonded to one Co(1) and four equivalent Sb(1) atoms to form a mixture of distorted corner and edge-sharing DyCoSb4 trigonal bipyramids. In the fourth Dy site, Dy(4) is bonded in a 5-coordinate geometry to two equivalent Co(1) and three equivalent Sb(1) atoms. Co(1) is bonded in a 7-coordinate geometry to one Dy(1), one Dy(2), one Dy(3), and four equivalent Dy(4) atoms. Sb(1) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), and three equivalent Dy(4) atoms.
Dy5CoSb2 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to one Co(1) and four equivalent Sb(1) atoms to form a mixture of distorted corner and edge-sharing DyCoSb4 trigonal bipyramids. The Dy(1)-Co(1) bond length is 2.66 Å. All Dy(1)-Sb(1) bond lengths are 3.15 Å. In the second Dy site, Dy(2) is bonded in a 5-coordinate geometry to one Co(1) and four equivalent Sb(1) atoms. The Dy(2)-Co(1) bond length is 3.19 Å. There are two shorter (3.09 Å) and two longer (3.10 Å) Dy(2)-Sb(1) bond lengths. In the third Dy site, Dy(3) is bonded to one Co(1) and four equivalent Sb(1) atoms to form a mixture of distorted corner and edge-sharing DyCoSb4 trigonal bipyramids. The Dy(3)-Co(1) bond length is 2.67 Å. There are two shorter (3.17 Å) and two longer (3.22 Å) Dy(3)-Sb(1) bond lengths. In the fourth Dy site, Dy(4) is bonded in a 5-coordinate geometry to two equivalent Co(1) and three equivalent Sb(1) atoms. There is one shorter (2.71 Å) and one longer (2.80 Å) Dy(4)-Co(1) bond length. There are a spread of Dy(4)-Sb(1) bond distances ranging from 3.32-3.54 Å. Co(1) is bonded in a 7-coordinate geometry to one Dy(1), one Dy(2), one Dy(3), and four equivalent Dy(4) atoms. Sb(1) is bonded in a 9-coordinate geometry to two equivalent Dy(1), two equivalent Dy(2), two equivalent Dy(3), and three equivalent Dy(4) atoms.