Sr4CeMn5O15 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(4), one O(5), two equivalent O(2), two equivalent O(3), two equivalent O(6), and four equivalent O(1) atoms to form SrO12 cuboctahedra that share corners with two equivalent Ce(1)O12 cuboctahedra, corners with five equivalent Sr(1)O12 cuboctahedra, corners with five equivalent Sr(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with two equivalent Ce(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with three equivalent Mn(2)O6 octahedra, and faces with three equivalent Mn(3)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(6), two equivalent O(1), two equivalent O(3), three equivalent O(5), and four equivalent O(2) atoms to form SrO12 cuboctahedra that share corners with three equivalent Ce(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with five equivalent Sr(1)O12 cuboctahedra,  a faceface with one Ce(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra,  a faceface with one Mn(1)O6 octahedra, faces with three equivalent Mn(3)O6 octahedra, and faces with four equivalent Mn(2)O6 octahedra. Ce(1) is bonded to two equivalent O(4), two equivalent O(6), four equivalent O(1), and four equivalent O(2) atoms to form CeO12 cuboctahedra that share corners with two equivalent Ce(1)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, and faces with four equivalent Mn(3)O6 octahedra. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(6) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with four equivalent Mn(3)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ce(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 5-7°. In the second Mn site, Mn(2) is bonded to one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra,  a faceface with one Ce(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. In the third Mn site, Mn(3) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(2)O6 octahedra, faces with two equivalent Ce(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one Ce(1), one Mn(1), and one Mn(3) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1), two equivalent Sr(2), one Ce(1), one Mn(2), and one Mn(3) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(2) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Ce(1), and two equivalent Mn(3) atoms. In the fifth O site, O(5) is bonded to one Sr(1), three equivalent Sr(2), one Mn(2), and one Mn(3) atom to form a mixture of distorted corner and edge-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 4°. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one Ce(1), one Mn(1), and one Mn(2) atom.
Sr4CeMn5O15 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(4), one O(5), two equivalent O(2), two equivalent O(3), two equivalent O(6), and four equivalent O(1) atoms to form SrO12 cuboctahedra that share corners with two equivalent Ce(1)O12 cuboctahedra, corners with five equivalent Sr(1)O12 cuboctahedra, corners with five equivalent Sr(2)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with two equivalent Ce(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with three equivalent Mn(2)O6 octahedra, and faces with three equivalent Mn(3)O6 octahedra. The Sr(1)-O(4) bond length is 2.74 Å. The Sr(1)-O(5) bond length is 2.83 Å. Both Sr(1)-O(2) bond lengths are 2.70 Å. Both Sr(1)-O(3) bond lengths are 2.75 Å. Both Sr(1)-O(6) bond lengths are 2.76 Å. There are two shorter (2.75 Å) and two longer (2.88 Å) Sr(1)-O(1) bond lengths. In the second Sr site, Sr(2) is bonded to one O(6), two equivalent O(1), two equivalent O(3), three equivalent O(5), and four equivalent O(2) atoms to form SrO12 cuboctahedra that share corners with three equivalent Ce(1)O12 cuboctahedra, corners with four equivalent Sr(2)O12 cuboctahedra, corners with five equivalent Sr(1)O12 cuboctahedra,  a faceface with one Ce(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra,  a faceface with one Mn(1)O6 octahedra, faces with three equivalent Mn(3)O6 octahedra, and faces with four equivalent Mn(2)O6 octahedra. The Sr(2)-O(6) bond length is 2.82 Å. Both Sr(2)-O(1) bond lengths are 2.76 Å. Both Sr(2)-O(3) bond lengths are 2.76 Å. There is one shorter (2.68 Å) and two longer (2.76 Å) Sr(2)-O(5) bond lengths. There are two shorter (2.77 Å) and two longer (2.95 Å) Sr(2)-O(2) bond lengths. Ce(1) is bonded to two equivalent O(4), two equivalent O(6), four equivalent O(1), and four equivalent O(2) atoms to form CeO12 cuboctahedra that share corners with two equivalent Ce(1)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, and faces with four equivalent Mn(3)O6 octahedra. Both Ce(1)-O(4) bond lengths are 2.75 Å. Both Ce(1)-O(6) bond lengths are 2.66 Å. All Ce(1)-O(1) bond lengths are 2.64 Å. All Ce(1)-O(2) bond lengths are 2.59 Å. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two equivalent O(6) and four equivalent O(1) atoms to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with four equivalent Mn(3)O6 octahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Ce(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 5-7°. Both Mn(1)-O(6) bond lengths are 1.93 Å. All Mn(1)-O(1) bond lengths are 1.95 Å. In the second Mn site, Mn(2) is bonded to one O(5), one O(6), two equivalent O(2), and two equivalent O(3) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with two equivalent Mn(2)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra,  a faceface with one Ce(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with four equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. The Mn(2)-O(5) bond length is 1.96 Å. The Mn(2)-O(6) bond length is 1.97 Å. Both Mn(2)-O(2) bond lengths are 1.98 Å. Both Mn(2)-O(3) bond lengths are 1.94 Å. In the third Mn site, Mn(3) is bonded to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with two equivalent Mn(1)O6 octahedra, corners with three equivalent Mn(2)O6 octahedra, faces with two equivalent Ce(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-10°. The Mn(3)-O(4) bond length is 1.95 Å. The Mn(3)-O(5) bond length is 1.93 Å. Both Mn(3)-O(1) bond lengths are 1.95 Å. Both Mn(3)-O(2) bond lengths are 1.93 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one Ce(1), one Mn(1), and one Mn(3) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1), two equivalent Sr(2), one Ce(1), one Mn(2), and one Mn(3) atom. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), and two equivalent Mn(2) atoms. In the fourth O site, O(4) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Ce(1), and two equivalent Mn(3) atoms. In the fifth O site, O(5) is bonded to one Sr(1), three equivalent Sr(2), one Mn(2), and one Mn(3) atom to form a mixture of distorted corner and edge-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles are 4°. In the sixth O site, O(6) is bonded in a distorted linear geometry to one Sr(2), two equivalent Sr(1), one Ce(1), one Mn(1), and one Mn(2) atom.