Eu2CeZrO6 is Orthorhombic Perovskite-derived structured and crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to twelve equivalent O(1) atoms to form EuO12 cuboctahedra that share faces with four equivalent Ce(1)O6 octahedra and faces with four equivalent Zr(1)O6 octahedra. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to eight equivalent O(1) atoms. Ce(1) is bonded to six equivalent O(1) atoms to form CeO6 octahedra that share corners with six equivalent Zr(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 26°. Zr(1) is bonded to six equivalent O(1) atoms to form ZrO6 octahedra that share corners with six equivalent Ce(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 26°. O(1) is bonded in a 5-coordinate geometry to one Eu(1), two equivalent Eu(2), one Ce(1), and one Zr(1) atom.
Eu2CeZrO6 is Orthorhombic Perovskite-derived structured and crystallizes in the cubic Pn-3 space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to twelve equivalent O(1) atoms to form EuO12 cuboctahedra that share faces with four equivalent Ce(1)O6 octahedra and faces with four equivalent Zr(1)O6 octahedra. All Eu(1)-O(1) bond lengths are 3.05 Å. In the second Eu site, Eu(2) is bonded in a distorted square co-planar geometry to eight equivalent O(1) atoms. There are four shorter (2.55 Å) and four longer (3.13 Å) Eu(2)-O(1) bond lengths. Ce(1) is bonded to six equivalent O(1) atoms to form CeO6 octahedra that share corners with six equivalent Zr(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 26°. All Ce(1)-O(1) bond lengths are 2.28 Å. Zr(1) is bonded to six equivalent O(1) atoms to form ZrO6 octahedra that share corners with six equivalent Ce(1)O6 octahedra and faces with two equivalent Eu(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 26°. All Zr(1)-O(1) bond lengths are 2.14 Å. O(1) is bonded in a 5-coordinate geometry to one Eu(1), two equivalent Eu(2), one Ce(1), and one Zr(1) atom.