SrDy(FeO3)4 crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with eight equivalent Dy(1)O12 cuboctahedra, and faces with eight equivalent Fe(1)O6 octahedra. Dy(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form DyO12 cuboctahedra that share corners with four equivalent Dy(1)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, and faces with eight equivalent Fe(1)O6 octahedra. Fe(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Dy(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-13°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(1), one Dy(1), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Dy(1), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Dy(1) and two equivalent Fe(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent Sr(1) and two equivalent Fe(1) atoms.
SrDy(FeO3)4 crystallizes in the orthorhombic Cmmm space group. Sr(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with eight equivalent Dy(1)O12 cuboctahedra, and faces with eight equivalent Fe(1)O6 octahedra. All Sr(1)-O(1) bond lengths are 2.73 Å. All Sr(1)-O(2) bond lengths are 2.91 Å. All Sr(1)-O(4) bond lengths are 2.69 Å. Dy(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form DyO12 cuboctahedra that share corners with four equivalent Dy(1)O12 cuboctahedra, corners with eight equivalent Sr(1)O12 cuboctahedra, and faces with eight equivalent Fe(1)O6 octahedra. All Dy(1)-O(1) bond lengths are 2.67 Å. All Dy(1)-O(2) bond lengths are 2.48 Å. All Dy(1)-O(3) bond lengths are 2.69 Å. Fe(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form FeO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Dy(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-13°. The Fe(1)-O(3) bond length is 1.92 Å. The Fe(1)-O(4) bond length is 1.91 Å. Both Fe(1)-O(1) bond lengths are 1.90 Å. Both Fe(1)-O(2) bond lengths are 1.91 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(1), one Dy(1), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Dy(1), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Dy(1) and two equivalent Fe(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent Sr(1) and two equivalent Fe(1) atoms.