Sr2La3Fe4CoO15 is (Cubic) Perovskite-derived structured and crystallizes in the trigonal R3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to three equivalent O(1), three equivalent O(5), and six equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent La(2)O12 cuboctahedra, corners with six equivalent Sr(1)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(3)O6 octahedra, and faces with three equivalent Fe(4)O6 octahedra. In the second Sr site, Sr(2) is bonded to three equivalent O(3), three equivalent O(5), and six equivalent O(2) atoms to form SrO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent La(3)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. There are three inequivalent La sites. In the first La site, La(1) is bonded to three equivalent O(2), three equivalent O(4), and six equivalent O(5) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(2)O12 cuboctahedra, corners with three equivalent La(3)O12 cuboctahedra, corners with six equivalent La(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(3)O6 octahedra, faces with three equivalent Fe(4)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. In the second La site, La(2) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent La(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra,  a faceface with one Fe(3)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Fe(2)O6 octahedra. In the third La site, La(3) is bonded to three equivalent O(3), three equivalent O(4), and six equivalent O(1) atoms to form LaO12 cuboctahedra that share corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent La(1)O12 cuboctahedra, corners with six equivalent La(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with three equivalent Fe(3)O6 octahedra. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Co(1)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-5°. In the second Fe site, Fe(2) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-5°. In the third Fe site, Fe(3) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form FeO6 octahedra that share corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 3°. In the fourth Fe site, Fe(4) is bonded to three equivalent O(4) and three equivalent O(5) atoms to form FeO6 octahedra that share corners with three equivalent Fe(3)O6 octahedra, corners with three equivalent Co(1)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-3°. Co(1) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form CoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-2°. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted linear geometry to one Sr(2), one La(3), two equivalent La(2), one Fe(1), and one Fe(2) atom. In the second O site, O(4) is bonded in a distorted linear geometry to two equivalent Sr(1), one La(1), one La(3), one Fe(3), and one Fe(4) atom. In the third O site, O(5) is bonded to one Sr(1), one Sr(2), two equivalent La(1), one Fe(4), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr2La2FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the fourth O site, O(1) is bonded in a distorted linear geometry to one Sr(1), one La(2), two equivalent La(3), one Fe(2), and one Fe(3) atom. In the fifth O site, O(2) is bonded to two equivalent Sr(2), one La(1), one La(2), one Fe(1), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr2La2FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-60°.
Sr2La3Fe4CoO15 is (Cubic) Perovskite-derived structured and crystallizes in the trigonal R3m space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to three equivalent O(1), three equivalent O(5), and six equivalent O(4) atoms to form SrO12 cuboctahedra that share corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent La(2)O12 cuboctahedra, corners with six equivalent Sr(1)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(3)O6 octahedra, and faces with three equivalent Fe(4)O6 octahedra. All Sr(1)-O(1) bond lengths are 2.86 Å. All Sr(1)-O(5) bond lengths are 2.70 Å. All Sr(1)-O(4) bond lengths are 2.76 Å. In the second Sr site, Sr(2) is bonded to three equivalent O(3), three equivalent O(5), and six equivalent O(2) atoms to form SrO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent La(3)O12 cuboctahedra, corners with six equivalent Sr(2)O12 cuboctahedra, faces with three equivalent La(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra,  a faceface with one Fe(2)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. All Sr(2)-O(3) bond lengths are 2.86 Å. All Sr(2)-O(5) bond lengths are 2.71 Å. All Sr(2)-O(2) bond lengths are 2.76 Å. There are three inequivalent La sites. In the first La site, La(1) is bonded to three equivalent O(2), three equivalent O(4), and six equivalent O(5) atoms to form LaO12 cuboctahedra that share corners with three equivalent La(2)O12 cuboctahedra, corners with three equivalent La(3)O12 cuboctahedra, corners with six equivalent La(1)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(3)O6 octahedra, faces with three equivalent Fe(4)O6 octahedra, and faces with three equivalent Co(1)O6 octahedra. All La(1)-O(2) bond lengths are 2.72 Å. All La(1)-O(4) bond lengths are 2.82 Å. All La(1)-O(5) bond lengths are 2.76 Å. In the second La site, La(2) is bonded to three equivalent O(1), three equivalent O(2), and six equivalent O(3) atoms to form LaO12 cuboctahedra that share corners with three equivalent Sr(1)O12 cuboctahedra, corners with three equivalent La(1)O12 cuboctahedra, corners with six equivalent La(2)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, faces with three equivalent La(3)O12 cuboctahedra,  a faceface with one Fe(3)O6 octahedra,  a faceface with one Co(1)O6 octahedra, faces with three equivalent Fe(1)O6 octahedra, and faces with three equivalent Fe(2)O6 octahedra. All La(2)-O(1) bond lengths are 2.79 Å. All La(2)-O(2) bond lengths are 2.66 Å. All La(2)-O(3) bond lengths are 2.76 Å. In the third La site, La(3) is bonded to three equivalent O(3), three equivalent O(4), and six equivalent O(1) atoms to form LaO12 cuboctahedra that share corners with three equivalent Sr(2)O12 cuboctahedra, corners with three equivalent La(1)O12 cuboctahedra, corners with six equivalent La(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra,  a faceface with one Fe(1)O6 octahedra,  a faceface with one Fe(4)O6 octahedra, faces with three equivalent Fe(2)O6 octahedra, and faces with three equivalent Fe(3)O6 octahedra. All La(3)-O(3) bond lengths are 2.72 Å. All La(3)-O(4) bond lengths are 2.72 Å. All La(3)-O(1) bond lengths are 2.76 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Co(1)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-5°. All Fe(1)-O(2) bond lengths are 1.94 Å. All Fe(1)-O(3) bond lengths are 2.00 Å. In the second Fe site, Fe(2) is bonded to three equivalent O(1) and three equivalent O(3) atoms to form FeO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(3)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Sr(2)O12 cuboctahedra, faces with three equivalent La(2)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-5°. All Fe(2)-O(1) bond lengths are 1.95 Å. All Fe(2)-O(3) bond lengths are 1.94 Å. In the third Fe site, Fe(3) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form FeO6 octahedra that share corners with three equivalent Fe(2)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  a faceface with one La(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent La(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 3°. All Fe(3)-O(1) bond lengths are 1.97 Å. All Fe(3)-O(4) bond lengths are 1.92 Å. In the fourth Fe site, Fe(4) is bonded to three equivalent O(4) and three equivalent O(5) atoms to form FeO6 octahedra that share corners with three equivalent Fe(3)O6 octahedra, corners with three equivalent Co(1)O6 octahedra,  a faceface with one Sr(2)O12 cuboctahedra,  a faceface with one La(3)O12 cuboctahedra, faces with three equivalent Sr(1)O12 cuboctahedra, and faces with three equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-3°. All Fe(4)-O(4) bond lengths are 2.00 Å. All Fe(4)-O(5) bond lengths are 1.94 Å. Co(1) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form CoO6 octahedra that share corners with three equivalent Fe(1)O6 octahedra, corners with three equivalent Fe(4)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with three equivalent Sr(2)O12 cuboctahedra, and faces with three equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-2°. All Co(1)-O(2) bond lengths are 1.92 Å. All Co(1)-O(5) bond lengths are 1.91 Å. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted linear geometry to one Sr(2), one La(3), two equivalent La(2), one Fe(1), and one Fe(2) atom. In the second O site, O(4) is bonded in a distorted linear geometry to two equivalent Sr(1), one La(1), one La(3), one Fe(3), and one Fe(4) atom. In the third O site, O(5) is bonded to one Sr(1), one Sr(2), two equivalent La(1), one Fe(4), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr2La2FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-60°. In the fourth O site, O(1) is bonded in a distorted linear geometry to one Sr(1), one La(2), two equivalent La(3), one Fe(2), and one Fe(3) atom. In the fifth O site, O(2) is bonded to two equivalent Sr(2), one La(1), one La(2), one Fe(1), and one Co(1) atom to form a mixture of distorted face, corner, and edge-sharing OSr2La2FeCo octahedra. The corner-sharing octahedral tilt angles range from 1-60°.