EuCuO2 crystallizes in the trigonal R-3m space group. Eu(1) is bonded to six equivalent O(1) atoms to form distorted edge-sharing EuO6 octahedra. Cu(1) is bonded in a linear geometry to two equivalent O(1) atoms. O(1) is bonded to three equivalent Eu(1) and one Cu(1) atom to form a mixture of corner and edge-sharing OEu3Cu tetrahedra.
EuCuO2 crystallizes in the trigonal R-3m space group. Eu(1) is bonded to six equivalent O(1) atoms to form distorted edge-sharing EuO6 octahedra. All Eu(1)-O(1) bond lengths are 2.36 Å. Cu(1) is bonded in a linear geometry to two equivalent O(1) atoms. Both Cu(1)-O(1) bond lengths are 1.78 Å. O(1) is bonded to three equivalent Eu(1) and one Cu(1) atom to form a mixture of corner and edge-sharing OEu3Cu tetrahedra.