CaDy(CoO3)4 crystallizes in the orthorhombic Amm2 space group. Ca(1) is bonded in a 10-coordinate geometry to two equivalent O(3), four equivalent O(1), and four equivalent O(5) atoms. Dy(1) is bonded in a 12-coordinate geometry to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms. Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 11-27°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ca(1), one Dy(1), and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Dy(1) and two equivalent Co(1) atoms. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one Dy(1), and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to two equivalent Dy(1) and two equivalent Co(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Co(1) atoms.
CaDy(CoO3)4 crystallizes in the orthorhombic Amm2 space group. Ca(1) is bonded in a 10-coordinate geometry to two equivalent O(3), four equivalent O(1), and four equivalent O(5) atoms. Both Ca(1)-O(3) bond lengths are 2.63 Å. All Ca(1)-O(1) bond lengths are 2.52 Å. There are two shorter (2.52 Å) and two longer (2.74 Å) Ca(1)-O(5) bond lengths. Dy(1) is bonded in a 12-coordinate geometry to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms. Both Dy(1)-O(2) bond lengths are 2.31 Å. Both Dy(1)-O(3) bond lengths are 2.52 Å. All Dy(1)-O(1) bond lengths are 2.74 Å. There are two shorter (2.29 Å) and two longer (2.95 Å) Dy(1)-O(4) bond lengths. Co(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 11-27°. The Co(1)-O(2) bond length is 1.87 Å. The Co(1)-O(3) bond length is 1.89 Å. The Co(1)-O(4) bond length is 1.91 Å. The Co(1)-O(5) bond length is 1.85 Å. Both Co(1)-O(1) bond lengths are 1.87 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Ca(1), one Dy(1), and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Dy(1) and two equivalent Co(1) atoms. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Ca(1), one Dy(1), and two equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to two equivalent Dy(1) and two equivalent Co(1) atoms. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Ca(1) and two equivalent Co(1) atoms.