Dy3Co11B4 crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 18-coordinate geometry to six equivalent Co(1), six equivalent Co(2), and six equivalent B(1) atoms. In the second Dy site, Dy(2) is bonded in a 6-coordinate geometry to six equivalent Co(3) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted square co-planar geometry to four equivalent Dy(1) and four equivalent B(1) atoms. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to two equivalent Dy(1), two equivalent Co(3), and two equivalent B(1) atoms. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to three equivalent Dy(2) and six equivalent Co(2) atoms. B(1) is bonded in a 6-coordinate geometry to three equivalent Dy(1), three equivalent Co(1), and three equivalent Co(2) atoms.
Dy3Co11B4 crystallizes in the hexagonal P6/mmm space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 18-coordinate geometry to six equivalent Co(1), six equivalent Co(2), and six equivalent B(1) atoms. All Dy(1)-Co(1) bond lengths are 2.95 Å. All Dy(1)-Co(2) bond lengths are 2.86 Å. All Dy(1)-B(1) bond lengths are 2.90 Å. In the second Dy site, Dy(2) is bonded in a 6-coordinate geometry to six equivalent Co(3) atoms. All Dy(2)-Co(3) bond lengths are 2.90 Å. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted square co-planar geometry to four equivalent Dy(1) and four equivalent B(1) atoms. All Co(1)-B(1) bond lengths are 2.06 Å. In the second Co site, Co(2) is bonded in a distorted L-shaped geometry to two equivalent Dy(1), two equivalent Co(3), and two equivalent B(1) atoms. Both Co(2)-Co(3) bond lengths are 2.45 Å. Both Co(2)-B(1) bond lengths are 2.04 Å. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to three equivalent Dy(2) and six equivalent Co(2) atoms. B(1) is bonded in a 6-coordinate geometry to three equivalent Dy(1), three equivalent Co(1), and three equivalent Co(2) atoms.