Dy2EuO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to one O(1), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of corner and edge-sharing DyO6 octahedra. The corner-sharing octahedral tilt angles range from 51-65°. In the second Dy site, Dy(2) is bonded to one O(2), two equivalent O(1), and three equivalent O(4) atoms to form a mixture of distorted corner and edge-sharing DyO6 octahedra. The corner-sharing octahedral tilt angles range from 51-65°. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Dy(1), two equivalent Dy(2), and two equivalent Eu(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Dy(2), two equivalent Dy(1), and two equivalent Eu(1) atoms. In the third O site, O(3) is bonded to three equivalent Dy(1) and two equivalent Eu(1) atoms to form a mixture of corner and edge-sharing OEu2Dy3 square pyramids. In the fourth O site, O(4) is bonded to three equivalent Dy(2) and two equivalent Eu(1) atoms to form a mixture of distorted corner and edge-sharing OEu2Dy3 trigonal bipyramids.
Dy2EuO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to one O(1), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of corner and edge-sharing DyO6 octahedra. The corner-sharing octahedral tilt angles range from 51-65°. The Dy(1)-O(1) bond length is 2.27 Å. Both Dy(1)-O(2) bond lengths are 2.22 Å. There is one shorter (2.33 Å) and two longer (2.38 Å) Dy(1)-O(3) bond lengths. In the second Dy site, Dy(2) is bonded to one O(2), two equivalent O(1), and three equivalent O(4) atoms to form a mixture of distorted corner and edge-sharing DyO6 octahedra. The corner-sharing octahedral tilt angles range from 51-65°. The Dy(2)-O(2) bond length is 2.27 Å. Both Dy(2)-O(1) bond lengths are 2.32 Å. There is one shorter (2.30 Å) and two longer (2.36 Å) Dy(2)-O(4) bond lengths. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Both Eu(1)-O(1) bond lengths are 2.73 Å. There is one shorter (2.68 Å) and one longer (2.98 Å) Eu(1)-O(2) bond length. Both Eu(1)-O(3) bond lengths are 2.61 Å. Both Eu(1)-O(4) bond lengths are 2.61 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Dy(1), two equivalent Dy(2), and two equivalent Eu(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Dy(2), two equivalent Dy(1), and two equivalent Eu(1) atoms. In the third O site, O(3) is bonded to three equivalent Dy(1) and two equivalent Eu(1) atoms to form a mixture of corner and edge-sharing OEu2Dy3 square pyramids. In the fourth O site, O(4) is bonded to three equivalent Dy(2) and two equivalent Eu(1) atoms to form a mixture of distorted corner and edge-sharing OEu2Dy3 trigonal bipyramids.