Ba2La2Fe2Cu2O11 crystallizes in the tetragonal P4mm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a distorted q6 geometry to two equivalent O(8), four equivalent O(5), and four equivalent O(7) atoms. In the second Ba site, Ba(2) is bonded in a distorted q6 geometry to two equivalent O(10), four equivalent O(7), and four equivalent O(9) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent O(1), two equivalent O(4), four equivalent O(2), and four equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(4)O6 octahedra, faces with two equivalent Cu(1)O6 octahedra, and faces with two equivalent Cu(4)O5 square pyramids. In the second La site, La(2) is bonded to two equivalent O(3), two equivalent O(6), four equivalent O(2), and four equivalent O(5) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Cu(1)O6 octahedra, faces with two equivalent Cu(2)O6 octahedra, and faces with two equivalent Fe(2)O5 square pyramids. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), and four equivalent O(2) atoms to form FeO6 octahedra that share  a cornercorner with one Cu(2)O6 octahedra, corners with four equivalent Cu(1)O6 octahedra,  a cornercorner with one Cu(4)O5 square pyramid, faces with four equivalent La(1)O12 cuboctahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Fe site, Fe(2) is bonded to one O(6) and four equivalent O(5) atoms to form FeO5 square pyramids that share  a cornercorner with one Cu(1)O6 octahedra, corners with four equivalent Cu(2)O6 octahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Fe site, Fe(3) is bonded to one O(8) and four equivalent O(7) atoms to form FeO5 square pyramids that share  a cornercorner with one Cu(2)O6 octahedra and corners with four equivalent Cu(3)O5 square pyramids. The corner-sharing octahedra are not tilted. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(10), and four equivalent O(9) atoms to form FeO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(3)O5 square pyramid, corners with four equivalent Cu(4)O5 square pyramids, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(6), and four equivalent O(2) atoms to form CuO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O5 square pyramid, faces with four equivalent La(1)O12 cuboctahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. In the second Cu site, Cu(2) is bonded to one O(3), one O(8), and four equivalent O(5) atoms to form CuO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O5 square pyramid, corners with four equivalent Fe(2)O5 square pyramids, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. In the third Cu site, Cu(3) is bonded to one O(10) and four equivalent O(7) atoms to form CuO5 square pyramids that share  a cornercorner with one Fe(4)O6 octahedra and corners with four equivalent Fe(3)O5 square pyramids. The corner-sharing octahedra are not tilted. In the fourth Cu site, Cu(4) is bonded to one O(4) and four equivalent O(9) atoms to form CuO5 square pyramids that share  a cornercorner with one Fe(1)O6 octahedra, corners with four equivalent Fe(4)O6 octahedra, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-6°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent La(1), one Fe(4), and one Cu(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Fe(1), and one Cu(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent La(2), one Fe(1), 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(4) atom. In the fifth O site, O(5) is bonded to two equivalent Ba(1), two equivalent La(2), one Fe(2), and one Cu(2) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(5)Ba2La2FeCu octahedra, corners with two equivalent O(8)Ba4FeCu octahedra, corners with six equivalent O(7)Ba4FeCu octahedra,  an edgeedge with one O(7)Ba4FeCu octahedra, edges with two equivalent O(5)Ba2La2FeCu octahedra,  a faceface with one O(8)Ba4FeCu octahedra, and faces with four equivalent O(5)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-63°. In the sixth O site, O(6) is bonded in a distorted linear geometry to four equivalent La(2), one Fe(2), and one Cu(1) atom. In the seventh O site, O(7) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Fe(3), and one Cu(3) atom to form distorted OBa4FeCu octahedra that share corners with two equivalent O(7)Ba4FeCu octahedra, corners with two equivalent O(8)Ba4FeCu octahedra, corners with six equivalent O(5)Ba2La2FeCu octahedra, corners with six equivalent O(9)Ba2La2FeCu octahedra,  an edgeedge with one O(5)Ba2La2FeCu octahedra,  an edgeedge with one O(9)Ba2La2FeCu octahedra, edges with two equivalent O(7)Ba4FeCu octahedra,  a faceface with one O(8)Ba4FeCu octahedra, and faces with four equivalent O(7)Ba4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-60°. In the eighth O site, O(8) is bonded to four equivalent Ba(1), one Fe(3), and one Cu(2) atom to form distorted OBa4FeCu octahedra that share corners with four equivalent O(8)Ba4FeCu octahedra, corners with eight equivalent O(5)Ba2La2FeCu octahedra, corners with eight equivalent O(7)Ba4FeCu octahedra, faces with four equivalent O(5)Ba2La2FeCu octahedra, and faces with four equivalent O(7)Ba4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-63°. In the ninth O site, O(9) is bonded to two equivalent Ba(2), two equivalent La(1), one Fe(4), and one Cu(4) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(9)Ba2La2FeCu octahedra, corners with six equivalent O(7)Ba4FeCu octahedra,  an edgeedge with one O(7)Ba4FeCu octahedra, edges with two equivalent O(9)Ba2La2FeCu octahedra, and faces with four equivalent O(9)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-59°. In the tenth O site, O(10) is bonded in a distorted linear geometry to four equivalent Ba(2), one Fe(4), and one Cu(3) atom.
Ba2La2Fe2Cu2O11 crystallizes in the tetragonal P4mm space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a distorted q6 geometry to two equivalent O(8), four equivalent O(5), and four equivalent O(7) atoms. Both Ba(1)-O(8) bond lengths are 2.80 Å. All Ba(1)-O(5) bond lengths are 2.89 Å. All Ba(1)-O(7) bond lengths are 2.88 Å. In the second Ba site, Ba(2) is bonded in a distorted q6 geometry to two equivalent O(10), four equivalent O(7), and four equivalent O(9) atoms. Both Ba(2)-O(10) bond lengths are 2.81 Å. All Ba(2)-O(7) bond lengths are 2.78 Å. All Ba(2)-O(9) bond lengths are 2.99 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent O(1), two equivalent O(4), four equivalent O(2), and four equivalent O(9) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one La(2)O12 cuboctahedra, faces with four equivalent La(1)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Fe(4)O6 octahedra, faces with two equivalent Cu(1)O6 octahedra, and faces with two equivalent Cu(4)O5 square pyramids. Both La(1)-O(1) bond lengths are 2.80 Å. Both La(1)-O(4) bond lengths are 2.81 Å. All La(1)-O(2) bond lengths are 2.87 Å. All La(1)-O(9) bond lengths are 2.65 Å. In the second La site, La(2) is bonded to two equivalent O(3), two equivalent O(6), four equivalent O(2), and four equivalent O(5) atoms to form LaO12 cuboctahedra that share corners with four equivalent La(1)O12 cuboctahedra, corners with four equivalent La(2)O12 cuboctahedra,  a faceface with one La(1)O12 cuboctahedra, faces with four equivalent La(2)O12 cuboctahedra, faces with two equivalent Fe(1)O6 octahedra, faces with two equivalent Cu(1)O6 octahedra, faces with two equivalent Cu(2)O6 octahedra, and faces with two equivalent Fe(2)O5 square pyramids. Both La(2)-O(3) bond lengths are 2.80 Å. Both La(2)-O(6) bond lengths are 2.80 Å. All La(2)-O(2) bond lengths are 2.74 Å. All La(2)-O(5) bond lengths are 2.76 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), and four equivalent O(2) atoms to form FeO6 octahedra that share  a cornercorner with one Cu(2)O6 octahedra, corners with four equivalent Cu(1)O6 octahedra,  a cornercorner with one Cu(4)O5 square pyramid, faces with four equivalent La(1)O12 cuboctahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. The Fe(1)-O(3) bond length is 1.93 Å. The Fe(1)-O(4) bond length is 1.86 Å. All Fe(1)-O(2) bond lengths are 1.96 Å. In the second Fe site, Fe(2) is bonded to one O(6) and four equivalent O(5) atoms to form FeO5 square pyramids that share  a cornercorner with one Cu(1)O6 octahedra, corners with four equivalent Cu(2)O6 octahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. The Fe(2)-O(6) bond length is 1.85 Å. All Fe(2)-O(5) bond lengths are 1.92 Å. In the third Fe site, Fe(3) is bonded to one O(8) and four equivalent O(7) atoms to form FeO5 square pyramids that share  a cornercorner with one Cu(2)O6 octahedra and corners with four equivalent Cu(3)O5 square pyramids. The corner-sharing octahedra are not tilted. The Fe(3)-O(8) bond length is 1.86 Å. All Fe(3)-O(7) bond lengths are 1.98 Å. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(10), and four equivalent O(9) atoms to form FeO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(3)O5 square pyramid, corners with four equivalent Cu(4)O5 square pyramids, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. The Fe(4)-O(1) bond length is 1.95 Å. The Fe(4)-O(10) bond length is 1.87 Å. All Fe(4)-O(9) bond lengths are 2.02 Å. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(6), and four equivalent O(2) atoms to form CuO6 octahedra that share  a cornercorner with one Fe(4)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O5 square pyramid, faces with four equivalent La(1)O12 cuboctahedra, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. The Cu(1)-O(1) bond length is 1.95 Å. The Cu(1)-O(6) bond length is 1.90 Å. All Cu(1)-O(2) bond lengths are 2.00 Å. In the second Cu site, Cu(2) is bonded to one O(3), one O(8), and four equivalent O(5) atoms to form CuO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(3)O5 square pyramid, corners with four equivalent Fe(2)O5 square pyramids, and faces with four equivalent La(2)O12 cuboctahedra. The corner-sharing octahedra are not tilted. The Cu(2)-O(3) bond length is 1.97 Å. The Cu(2)-O(8) bond length is 1.96 Å. All Cu(2)-O(5) bond lengths are 2.05 Å. In the third Cu site, Cu(3) is bonded to one O(10) and four equivalent O(7) atoms to form CuO5 square pyramids that share  a cornercorner with one Fe(4)O6 octahedra and corners with four equivalent Fe(3)O5 square pyramids. The corner-sharing octahedra are not tilted. The Cu(3)-O(10) bond length is 2.01 Å. All Cu(3)-O(7) bond lengths are 2.01 Å. In the fourth Cu site, Cu(4) is bonded to one O(4) and four equivalent O(9) atoms to form CuO5 square pyramids that share  a cornercorner with one Fe(1)O6 octahedra, corners with four equivalent Fe(4)O6 octahedra, and faces with four equivalent La(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-6°. The Cu(4)-O(4) bond length is 2.00 Å. All Cu(4)-O(9) bond lengths are 1.94 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent La(1), one Fe(4), and one Cu(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent La(1), two equivalent La(2), one Fe(1), and one Cu(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to four equivalent La(2), one Fe(1), 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(4) atom. In the fifth O site, O(5) is bonded to two equivalent Ba(1), two equivalent La(2), one Fe(2), and one Cu(2) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(5)Ba2La2FeCu octahedra, corners with two equivalent O(8)Ba4FeCu octahedra, corners with six equivalent O(7)Ba4FeCu octahedra,  an edgeedge with one O(7)Ba4FeCu octahedra, edges with two equivalent O(5)Ba2La2FeCu octahedra,  a faceface with one O(8)Ba4FeCu octahedra, and faces with four equivalent O(5)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-63°. In the sixth O site, O(6) is bonded in a distorted linear geometry to four equivalent La(2), one Fe(2), and one Cu(1) atom. In the seventh O site, O(7) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Fe(3), and one Cu(3) atom to form distorted OBa4FeCu octahedra that share corners with two equivalent O(7)Ba4FeCu octahedra, corners with two equivalent O(8)Ba4FeCu octahedra, corners with six equivalent O(5)Ba2La2FeCu octahedra, corners with six equivalent O(9)Ba2La2FeCu octahedra,  an edgeedge with one O(5)Ba2La2FeCu octahedra,  an edgeedge with one O(9)Ba2La2FeCu octahedra, edges with two equivalent O(7)Ba4FeCu octahedra,  a faceface with one O(8)Ba4FeCu octahedra, and faces with four equivalent O(7)Ba4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-60°. In the eighth O site, O(8) is bonded to four equivalent Ba(1), one Fe(3), and one Cu(2) atom to form distorted OBa4FeCu octahedra that share corners with four equivalent O(8)Ba4FeCu octahedra, corners with eight equivalent O(5)Ba2La2FeCu octahedra, corners with eight equivalent O(7)Ba4FeCu octahedra, faces with four equivalent O(5)Ba2La2FeCu octahedra, and faces with four equivalent O(7)Ba4FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-63°. In the ninth O site, O(9) is bonded to two equivalent Ba(2), two equivalent La(1), one Fe(4), and one Cu(4) atom to form distorted OBa2La2FeCu octahedra that share corners with two equivalent O(9)Ba2La2FeCu octahedra, corners with six equivalent O(7)Ba4FeCu octahedra,  an edgeedge with one O(7)Ba4FeCu octahedra, edges with two equivalent O(9)Ba2La2FeCu octahedra, and faces with four equivalent O(9)Ba2La2FeCu octahedra. The corner-sharing octahedral tilt angles range from 2-59°. In the tenth O site, O(10) is bonded in a distorted linear geometry to four equivalent Ba(2), one Fe(4), and one Cu(3) atom.