SrCuO3 crystallizes in the monoclinic Pm space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(7), one O(8), two equivalent O(11), four equivalent O(1), and four equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Cu(1)O6 octahedra, faces with two equivalent Cu(2)O6 octahedra, and faces with four equivalent Cu(5)O6 octahedra. In the second Sr site, Sr(2) is bonded to one O(10), one O(9), two equivalent O(11), four equivalent O(4), and four equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Cu(3)O6 octahedra, faces with two equivalent Cu(4)O6 octahedra, and faces with four equivalent Cu(5)O6 octahedra. In the third Sr site, Sr(3) is bonded in a 11-coordinate geometry to one O(11), one O(8), one O(9), two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. In the fourth Sr site, Sr(4) is bonded in a 11-coordinate geometry to one O(10), one O(11), one O(7), two equivalent O(2), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(8) atoms to form CuO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(2)O6 octahedra, and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-15°. In the second Cu site, Cu(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(7) atoms to form CuO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-15°. In the third Cu site, Cu(3) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms to form CuO6 octahedra that share corners with two equivalent Cu(3)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(4)O6 octahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-14°. In the fourth Cu site, Cu(4) is bonded to two equivalent O(10), two equivalent O(5), and two equivalent O(6) atoms to form CuO6 octahedra that share corners with two equivalent Cu(4)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(3)O6 octahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-15°. In the fifth Cu site, Cu(5) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(11) atoms to form CuO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(2)O6 octahedra,  a cornercorner with one Cu(3)O6 octahedra,  a cornercorner with one Cu(4)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Cu(1), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(6)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids,  an edgeedge with one O(3)Sr4Cu2 octahedra, edges with two equivalent O(1)Sr4Cu2 octahedra,  a faceface with one O(1)Sr4Cu2 octahedra,  a faceface with one O(3)Sr4Cu2 octahedra,  a faceface with one O(4)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(8)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-63°. In the second O site, O(2) is bonded in a distorted L-shaped geometry to two equivalent Sr(3), two equivalent Sr(4), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(4), one Cu(2), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(8)Sr3Cu2 square pyramids,  an edgeedge with one O(1)Sr4Cu2 octahedra, edges with two equivalent O(3)Sr4Cu2 octahedra,  a faceface with one O(1)Sr4Cu2 octahedra,  a faceface with one O(3)Sr4Cu2 octahedra,  a faceface with one O(6)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(7)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-64°. In the fourth O site, O(4) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Cu(3), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with four equivalent O(6)Sr4Cu2 octahedra, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(8)Sr3Cu2 square pyramids,  an edgeedge with one O(6)Sr4Cu2 octahedra, edges with two equivalent O(4)Sr4Cu2 octahedra,  a faceface with one O(1)Sr4Cu2 octahedra,  a faceface with one O(4)Sr4Cu2 octahedra,  a faceface with one O(6)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(9)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-63°. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to two equivalent Sr(3), two equivalent Sr(4), one Cu(3), and one Cu(4) atom. In the sixth O site, O(6) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Cu(4), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(1)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids,  an edgeedge with one O(4)Sr4Cu2 octahedra, edges with two equivalent O(6)Sr4Cu2 octahedra,  a faceface with one O(3)Sr4Cu2 octahedra,  a faceface with one O(4)Sr4Cu2 octahedra,  a faceface with one O(6)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(10)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-63°. In the seventh O site, O(7) is bonded to one Sr(1), two equivalent Sr(4), and two equivalent Cu(2) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(6)Sr4Cu2 octahedra,  a cornercorner with one O(8)Sr3Cu2 square pyramid, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(7)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(3)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the eighth O site, O(8) is bonded to one Sr(1), two equivalent Sr(3), and two equivalent Cu(1) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(3)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4Cu2 octahedra,  a cornercorner with one O(7)Sr3Cu2 square pyramid, corners with two equivalent O(8)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(1)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the ninth O site, O(9) is bonded to one Sr(2), two equivalent Sr(3), and two equivalent Cu(3) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(6)Sr4Cu2 octahedra,  a cornercorner with one O(10)Sr3Cu2 square pyramid, corners with two equivalent O(8)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(4)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the tenth O site, O(10) is bonded to one Sr(2), two equivalent Sr(4), and two equivalent Cu(4) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(3)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr3Cu2 square pyramid, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(7)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(6)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), and two equivalent Cu(5) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(11)Sr4Cu2 octahedra,  an edgeedge with one O(10)Sr3Cu2 square pyramid,  an edgeedge with one O(7)Sr3Cu2 square pyramid,  an edgeedge with one O(8)Sr3Cu2 square pyramid,  an edgeedge with one O(9)Sr3Cu2 square pyramid, faces with two equivalent O(1)Sr4Cu2 octahedra, faces with two equivalent O(3)Sr4Cu2 octahedra, faces with two equivalent O(4)Sr4Cu2 octahedra, and faces with two equivalent O(6)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°.
SrCuO3 crystallizes in the monoclinic Pm space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one O(7), one O(8), two equivalent O(11), four equivalent O(1), and four equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Cu(1)O6 octahedra, faces with two equivalent Cu(2)O6 octahedra, and faces with four equivalent Cu(5)O6 octahedra. The Sr(1)-O(7) bond length is 2.59 Å. The Sr(1)-O(8) bond length is 2.60 Å. Both Sr(1)-O(11) bond lengths are 2.71 Å. All Sr(1)-O(1) bond lengths are 2.76 Å. All Sr(1)-O(3) bond lengths are 2.77 Å. In the second Sr site, Sr(2) is bonded to one O(10), one O(9), two equivalent O(11), four equivalent O(4), and four equivalent O(6) atoms to form SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Cu(3)O6 octahedra, faces with two equivalent Cu(4)O6 octahedra, and faces with four equivalent Cu(5)O6 octahedra. The Sr(2)-O(10) bond length is 2.60 Å. The Sr(2)-O(9) bond length is 2.61 Å. Both Sr(2)-O(11) bond lengths are 2.70 Å. All Sr(2)-O(4) bond lengths are 2.76 Å. All Sr(2)-O(6) bond lengths are 2.76 Å. In the third Sr site, Sr(3) is bonded in a 11-coordinate geometry to one O(11), one O(8), one O(9), two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. The Sr(3)-O(11) bond length is 2.59 Å. The Sr(3)-O(8) bond length is 2.68 Å. The Sr(3)-O(9) bond length is 2.73 Å. There is one shorter (2.61 Å) and one longer (2.62 Å) Sr(3)-O(1) bond length. There is one shorter (2.85 Å) and one longer (2.86 Å) Sr(3)-O(2) bond length. There is one shorter (2.59 Å) and one longer (2.60 Å) Sr(3)-O(4) bond length. There is one shorter (2.93 Å) and one longer (2.94 Å) Sr(3)-O(5) bond length. In the fourth Sr site, Sr(4) is bonded in a 11-coordinate geometry to one O(10), one O(11), one O(7), two equivalent O(2), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms. The Sr(4)-O(10) bond length is 2.67 Å. The Sr(4)-O(11) bond length is 2.59 Å. The Sr(4)-O(7) bond length is 2.73 Å. There is one shorter (2.92 Å) and one longer (2.94 Å) Sr(4)-O(2) bond length. Both Sr(4)-O(3) bond lengths are 2.60 Å. There is one shorter (2.84 Å) and one longer (2.85 Å) Sr(4)-O(5) bond length. Both Sr(4)-O(6) bond lengths are 2.61 Å. There are five inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(8) atoms to form CuO6 octahedra that share corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(2)O6 octahedra, and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-15°. Both Cu(1)-O(1) bond lengths are 1.95 Å. Both Cu(1)-O(2) bond lengths are 1.94 Å. Both Cu(1)-O(8) bond lengths are 1.93 Å. In the second Cu site, Cu(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(7) atoms to form CuO6 octahedra that share corners with two equivalent Cu(2)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(1)O6 octahedra, and faces with two equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-15°. Both Cu(2)-O(2) bond lengths are 1.95 Å. Both Cu(2)-O(3) bond lengths are 1.94 Å. There is one shorter (1.93 Å) and one longer (1.94 Å) Cu(2)-O(7) bond length. In the third Cu site, Cu(3) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(9) atoms to form CuO6 octahedra that share corners with two equivalent Cu(3)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(4)O6 octahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-14°. Both Cu(3)-O(4) bond lengths are 1.95 Å. Both Cu(3)-O(5) bond lengths are 1.95 Å. Both Cu(3)-O(9) bond lengths are 1.93 Å. In the fourth Cu site, Cu(4) is bonded to two equivalent O(10), two equivalent O(5), and two equivalent O(6) atoms to form CuO6 octahedra that share corners with two equivalent Cu(4)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra,  an edgeedge with one Cu(3)O6 octahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-15°. Both Cu(4)-O(10) bond lengths are 1.93 Å. Both Cu(4)-O(5) bond lengths are 1.94 Å. Both Cu(4)-O(6) bond lengths are 1.95 Å. In the fifth Cu site, Cu(5) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(11) atoms to form CuO6 octahedra that share  a cornercorner with one Cu(1)O6 octahedra,  a cornercorner with one Cu(2)O6 octahedra,  a cornercorner with one Cu(3)O6 octahedra,  a cornercorner with one Cu(4)O6 octahedra, corners with two equivalent Cu(5)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-3°. The Cu(5)-O(1) bond length is 1.94 Å. The Cu(5)-O(3) bond length is 2.01 Å. The Cu(5)-O(4) bond length is 2.01 Å. The Cu(5)-O(6) bond length is 1.94 Å. Both Cu(5)-O(11) bond lengths are 1.92 Å. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Sr(1), two equivalent Sr(3), one Cu(1), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(6)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with four equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids,  an edgeedge with one O(3)Sr4Cu2 octahedra, edges with two equivalent O(1)Sr4Cu2 octahedra,  a faceface with one O(1)Sr4Cu2 octahedra,  a faceface with one O(3)Sr4Cu2 octahedra,  a faceface with one O(4)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(8)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-63°. In the second O site, O(2) is bonded in a distorted L-shaped geometry to two equivalent Sr(3), two equivalent Sr(4), one Cu(1), and one Cu(2) atom. In the third O site, O(3) is bonded to two equivalent Sr(1), two equivalent Sr(4), one Cu(2), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(4)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(8)Sr3Cu2 square pyramids,  an edgeedge with one O(1)Sr4Cu2 octahedra, edges with two equivalent O(3)Sr4Cu2 octahedra,  a faceface with one O(1)Sr4Cu2 octahedra,  a faceface with one O(3)Sr4Cu2 octahedra,  a faceface with one O(6)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(7)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-64°. In the fourth O site, O(4) is bonded to two equivalent Sr(2), two equivalent Sr(3), one Cu(3), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(3)Sr4Cu2 octahedra, corners with two equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with four equivalent O(6)Sr4Cu2 octahedra, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(8)Sr3Cu2 square pyramids,  an edgeedge with one O(6)Sr4Cu2 octahedra, edges with two equivalent O(4)Sr4Cu2 octahedra,  a faceface with one O(1)Sr4Cu2 octahedra,  a faceface with one O(4)Sr4Cu2 octahedra,  a faceface with one O(6)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(9)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-63°. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to two equivalent Sr(3), two equivalent Sr(4), one Cu(3), and one Cu(4) atom. In the sixth O site, O(6) is bonded to two equivalent Sr(2), two equivalent Sr(4), one Cu(4), and one Cu(5) atom to form distorted OSr4Cu2 octahedra that share  a cornercorner with one O(1)Sr4Cu2 octahedra, corners with two equivalent O(11)Sr4Cu2 octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4Cu2 octahedra, corners with two equivalent O(7)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids,  an edgeedge with one O(4)Sr4Cu2 octahedra, edges with two equivalent O(6)Sr4Cu2 octahedra,  a faceface with one O(3)Sr4Cu2 octahedra,  a faceface with one O(4)Sr4Cu2 octahedra,  a faceface with one O(6)Sr4Cu2 octahedra, faces with two equivalent O(11)Sr4Cu2 octahedra, and faces with two equivalent O(10)Sr3Cu2 square pyramids. The corner-sharing octahedral tilt angles range from 0-63°. In the seventh O site, O(7) is bonded to one Sr(1), two equivalent Sr(4), and two equivalent Cu(2) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(6)Sr4Cu2 octahedra,  a cornercorner with one O(8)Sr3Cu2 square pyramid, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(7)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(3)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the eighth O site, O(8) is bonded to one Sr(1), two equivalent Sr(3), and two equivalent Cu(1) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(3)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4Cu2 octahedra,  a cornercorner with one O(7)Sr3Cu2 square pyramid, corners with two equivalent O(8)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(1)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the ninth O site, O(9) is bonded to one Sr(2), two equivalent Sr(3), and two equivalent Cu(3) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(1)Sr4Cu2 octahedra, corners with four equivalent O(6)Sr4Cu2 octahedra,  a cornercorner with one O(10)Sr3Cu2 square pyramid, corners with two equivalent O(8)Sr3Cu2 square pyramids, corners with two equivalent O(9)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(4)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the tenth O site, O(10) is bonded to one Sr(2), two equivalent Sr(4), and two equivalent Cu(4) atoms to form distorted OSr3Cu2 square pyramids that share corners with four equivalent O(3)Sr4Cu2 octahedra, corners with four equivalent O(4)Sr4Cu2 octahedra,  a cornercorner with one O(9)Sr3Cu2 square pyramid, corners with two equivalent O(10)Sr3Cu2 square pyramids, corners with two equivalent O(7)Sr3Cu2 square pyramids, edges with two equivalent O(11)Sr4Cu2 octahedra, and faces with four equivalent O(6)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 58-59°. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), and two equivalent Cu(5) atoms to form distorted OSr4Cu2 octahedra that share corners with two equivalent O(1)Sr4Cu2 octahedra, corners with two equivalent O(3)Sr4Cu2 octahedra, corners with two equivalent O(4)Sr4Cu2 octahedra, corners with two equivalent O(6)Sr4Cu2 octahedra, corners with four equivalent O(11)Sr4Cu2 octahedra,  an edgeedge with one O(10)Sr3Cu2 square pyramid,  an edgeedge with one O(7)Sr3Cu2 square pyramid,  an edgeedge with one O(8)Sr3Cu2 square pyramid,  an edgeedge with one O(9)Sr3Cu2 square pyramid, faces with two equivalent O(1)Sr4Cu2 octahedra, faces with two equivalent O(3)Sr4Cu2 octahedra, faces with two equivalent O(4)Sr4Cu2 octahedra, and faces with two equivalent O(6)Sr4Cu2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°.