Ba4Ce2In2O11 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are four inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. In the second Ba site, Ba(2) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. In the third Ba site, Ba(3) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. Ce(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CeO6 octahedra that share corners with two equivalent Ce(1)O6 octahedra and corners with four equivalent In(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 18-23°. In(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form InO5 square pyramids that share corners with four equivalent Ce(1)O6 octahedra and  a cornercorner with one In(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 3-30°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Ba(4), one Ce(1), and one In(1) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(4), one Ce(1), and one In(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(4), one Ce(1), and one In(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(4), one Ce(1), and one In(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ba(2), two equivalent Ba(1), and two equivalent In(1) atoms. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Ce(1) atoms. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ba(3), two equivalent Ba(4), and two equivalent Ce(1) atoms.
Ba4Ce2In2O11 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Pm space group. There are four inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 7-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. Both Ba(1)-O(1) bond lengths are 2.85 Å. Both Ba(1)-O(2) bond lengths are 3.07 Å. There is one shorter (2.98 Å) and one longer (3.27 Å) Ba(1)-O(5) bond length. There is one shorter (2.77 Å) and one longer (3.39 Å) Ba(1)-O(6) bond length. In the second Ba site, Ba(2) is bonded in a 7-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. The Ba(2)-O(5) bond length is 2.66 Å. Both Ba(2)-O(1) bond lengths are 2.85 Å. Both Ba(2)-O(2) bond lengths are 2.92 Å. There is one shorter (3.00 Å) and one longer (3.21 Å) Ba(2)-O(6) bond length. In the third Ba site, Ba(3) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. The Ba(3)-O(7) bond length is 2.70 Å. Both Ba(3)-O(2) bond lengths are 3.21 Å. Both Ba(3)-O(3) bond lengths are 2.74 Å. Both Ba(3)-O(4) bond lengths are 2.76 Å. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(7) atoms. Both Ba(4)-O(1) bond lengths are 3.34 Å. Both Ba(4)-O(2) bond lengths are 3.20 Å. Both Ba(4)-O(3) bond lengths are 2.75 Å. Both Ba(4)-O(4) bond lengths are 2.78 Å. There is one shorter (3.00 Å) and one longer (3.20 Å) Ba(4)-O(7) bond length. Ce(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom to form CeO6 octahedra that share corners with two equivalent Ce(1)O6 octahedra and corners with four equivalent In(1)O5 square pyramids. The corner-sharing octahedral tilt angles range from 18-23°. The Ce(1)-O(1) bond length is 2.25 Å. The Ce(1)-O(2) bond length is 2.25 Å. The Ce(1)-O(3) bond length is 2.27 Å. The Ce(1)-O(4) bond length is 2.27 Å. The Ce(1)-O(6) bond length is 2.28 Å. The Ce(1)-O(7) bond length is 2.22 Å. In(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form InO5 square pyramids that share corners with four equivalent Ce(1)O6 octahedra and  a cornercorner with one In(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 3-30°. The In(1)-O(1) bond length is 2.18 Å. The In(1)-O(2) bond length is 2.17 Å. The In(1)-O(3) bond length is 2.16 Å. The In(1)-O(4) bond length is 2.14 Å. The In(1)-O(5) bond length is 2.09 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), one Ba(4), one Ce(1), and one In(1) atom. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Ba(1), one Ba(2), one Ba(3), one Ba(4), one Ce(1), and one In(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(4), one Ce(1), and one In(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ba(3), one Ba(4), one Ce(1), and one In(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ba(2), two equivalent Ba(1), and two equivalent In(1) atoms. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Ce(1) atoms. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ba(3), two equivalent Ba(4), and two equivalent Ce(1) atoms.