Ba2La2Fe2Cu2O11 crystallizes in the tetragonal P4mm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent O(5), four equivalent O(1), and four equivalent O(2) atoms. La(1) is bonded to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(2) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Cu(2)O6 octahedra, faces with two equivalent Fe(1)O5 square pyramids, and faces with two equivalent Cu(1)O5 square pyramids. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(4) and four equivalent O(1) atoms to form FeO5 square pyramids that share corners with four equivalent Cu(2)O6 octahedra,  a cornercorner with one Cu(1)O5 square pyramid, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. In the second Fe site, Fe(2) is bonded to one O(3), one O(5), and four equivalent O(2) atoms to form FeO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra, corners with four equivalent Cu(1)O5 square pyramids, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(4) and four equivalent O(2) atoms to form CuO5 square pyramids that share corners with four equivalent Fe(2)O6 octahedra,  a cornercorner with one Fe(1)O5 square pyramid, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. In the second Cu site, Cu(2) is bonded to one O(3), one O(5), and four equivalent O(1) atoms to form CuO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with four equivalent Fe(1)O5 square pyramids, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), two equivalent La(1), one Fe(1), and one Cu(2) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(1)Ba2La2FeCu octahedra, corners with two equivalent O(5)Ba4FeCu octahedra, corners with twelve equivalent O(2)Ba2La2FeCu octahedra, edges with two equivalent O(1)Ba2La2FeCu octahedra, edges with two equivalent O(2)Ba2La2FeCu octahedra,  a faceface with one O(5)Ba4FeCu octahedra, and faces with four equivalent O(1)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent La(1), one Fe(2), and one Cu(1) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(2)Ba2La2FeCu octahedra, corners with two equivalent O(5)Ba4FeCu octahedra, corners with twelve equivalent O(1)Ba2La2FeCu octahedra, edges with two equivalent O(1)Ba2La2FeCu octahedra, edges with two equivalent O(2)Ba2La2FeCu octahedra,  a faceface with one O(5)Ba4FeCu octahedra, and faces with four equivalent O(2)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent La(1), one Fe(2), and one Cu(2) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent La(1), one Fe(1), and one Cu(1) atom. In the fifth O site, O(5) is bonded to four equivalent Ba(1), one Fe(2), and one Cu(2) atom to form distorted OBa4FeCu octahedra that share corners with four equivalent O(5)Ba4FeCu octahedra, corners with eight equivalent O(1)Ba2La2FeCu octahedra, corners with eight equivalent O(2)Ba2La2FeCu octahedra, faces with four equivalent O(1)Ba2La2FeCu octahedra, and faces with four equivalent O(2)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-62°.
Ba2La2Fe2Cu2O11 crystallizes in the tetragonal P4mm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent O(5), four equivalent O(1), and four equivalent O(2) atoms. Both Ba(1)-O(5) bond lengths are 2.80 Å. All Ba(1)-O(1) bond lengths are 2.85 Å. All Ba(1)-O(2) bond lengths are 2.89 Å. La(1) is bonded to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(2) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Fe(2)O6 octahedra, faces with two equivalent Cu(2)O6 octahedra, faces with two equivalent Fe(1)O5 square pyramids, and faces with two equivalent Cu(1)O5 square pyramids. Both La(1)-O(3) bond lengths are 2.80 Å. Both La(1)-O(4) bond lengths are 2.80 Å. All La(1)-O(1) bond lengths are 2.79 Å. All La(1)-O(2) bond lengths are 2.70 Å. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(4) and four equivalent O(1) atoms to form FeO5 square pyramids that share corners with four equivalent Cu(2)O6 octahedra,  a cornercorner with one Cu(1)O5 square pyramid, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. The Fe(1)-O(4) bond length is 1.81 Å. All Fe(1)-O(1) bond lengths are 1.91 Å. In the second Fe site, Fe(2) is bonded to one O(3), one O(5), and four equivalent O(2) atoms to form FeO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra, corners with four equivalent Cu(1)O5 square pyramids, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. The Fe(2)-O(3) bond length is 1.99 Å. The Fe(2)-O(5) bond length is 1.94 Å. All Fe(2)-O(2) bond lengths are 2.02 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(4) and four equivalent O(2) atoms to form CuO5 square pyramids that share corners with four equivalent Fe(2)O6 octahedra,  a cornercorner with one Fe(1)O5 square pyramid, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 5°. The Cu(1)-O(4) bond length is 1.92 Å. All Cu(1)-O(2) bond lengths are 1.95 Å. In the second Cu site, Cu(2) is bonded to one O(3), one O(5), and four equivalent O(1) atoms to form CuO6 octahedra that share corners with two equivalent Fe(2)O6 octahedra, corners with four equivalent Fe(1)O5 square pyramids, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. The Cu(2)-O(3) bond length is 2.00 Å. The Cu(2)-O(5) bond length is 2.01 Å. All Cu(2)-O(1) bond lengths are 2.06 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), two equivalent La(1), one Fe(1), and one Cu(2) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(1)Ba2La2FeCu octahedra, corners with two equivalent O(5)Ba4FeCu octahedra, corners with twelve equivalent O(2)Ba2La2FeCu octahedra, edges with two equivalent O(1)Ba2La2FeCu octahedra, edges with two equivalent O(2)Ba2La2FeCu octahedra,  a faceface with one O(5)Ba4FeCu octahedra, and faces with four equivalent O(1)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the second O site, O(2) is bonded to two equivalent Ba(1), two equivalent La(1), one Fe(2), and one Cu(1) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(2)Ba2La2FeCu octahedra, corners with two equivalent O(5)Ba4FeCu octahedra, corners with twelve equivalent O(1)Ba2La2FeCu octahedra, edges with two equivalent O(1)Ba2La2FeCu octahedra, edges with two equivalent O(2)Ba2La2FeCu octahedra,  a faceface with one O(5)Ba4FeCu octahedra, and faces with four equivalent O(2)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 1-63°. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent La(1), one Fe(2), and one Cu(2) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to four equivalent La(1), one Fe(1), and one Cu(1) atom. In the fifth O site, O(5) is bonded to four equivalent Ba(1), one Fe(2), and one Cu(2) atom to form distorted OBa4FeCu octahedra that share corners with four equivalent O(5)Ba4FeCu octahedra, corners with eight equivalent O(1)Ba2La2FeCu octahedra, corners with eight equivalent O(2)Ba2La2FeCu octahedra, faces with four equivalent O(1)Ba2La2FeCu octahedra, and faces with four equivalent O(2)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-62°.