LiEu2IrO6 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form LiO6 octahedra that share corners with six equivalent Ir(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-33°. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), three equivalent O(1), and three equivalent O(3) atoms. Ir(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form IrO6 octahedra that share corners with six equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-33°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), three equivalent Eu(1), and one Ir(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Eu(1), and one Ir(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(1), three equivalent Eu(1), and one Ir(1) atom.
LiEu2IrO6 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form LiO6 octahedra that share corners with six equivalent Ir(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-33°. Both Li(1)-O(1) bond lengths are 2.19 Å. Both Li(1)-O(2) bond lengths are 2.06 Å. Both Li(1)-O(3) bond lengths are 2.18 Å. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), three equivalent O(1), and three equivalent O(3) atoms. There is one shorter (2.36 Å) and one longer (2.39 Å) Eu(1)-O(2) bond length. There are a spread of Eu(1)-O(1) bond distances ranging from 2.42-2.71 Å. There are a spread of Eu(1)-O(3) bond distances ranging from 2.39-2.64 Å. Ir(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form IrO6 octahedra that share corners with six equivalent Li(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 32-33°. Both Ir(1)-O(1) bond lengths are 1.97 Å. Both Ir(1)-O(2) bond lengths are 1.96 Å. Both Ir(1)-O(3) bond lengths are 1.97 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), three equivalent Eu(1), and one Ir(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Li(1), two equivalent Eu(1), and one Ir(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(1), three equivalent Eu(1), and one Ir(1) atom.