Sr2Ce2YCoCu2O11 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(6), two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(3) and four equivalent O(5) atoms. Co(1) is bonded to two equivalent O(1) and two equivalent O(6) atoms to form CoO4 tetrahedra that share corners with two equivalent Cu(1)O5 square pyramids and corners with two equivalent Co(1)O4 tetrahedra. Cu(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(4) atoms to form CuO5 square pyramids that share corners with four equivalent Cu(1)O5 square pyramids and  a cornercorner with one Co(1)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Co(1), and one Cu(1) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Ce(1), and two equivalent Cu(1) atoms to form distorted OSr2Ce2Cu2 octahedra that share corners with two equivalent O(4)Sr2Ce2Cu2 octahedra, corners with two equivalent O(3)Ce2Y2 tetrahedra, corners with two equivalent O(6)Sr2Co2 tetrahedra, corners with four equivalent O(5)Ce2Y2 tetrahedra, edges with two equivalent O(4)Sr2Ce2Cu2 octahedra,  an edgeedge with one O(3)Ce2Y2 tetrahedra, faces with two equivalent O(2)Sr2Ce2Cu2 octahedra, and faces with two equivalent O(4)Sr2Ce2Cu2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the third O site, O(3) is bonded to two equivalent Ce(1) and two equivalent Y(1) atoms to form OCe2Y2 tetrahedra that share corners with two equivalent O(2)Sr2Ce2Cu2 octahedra, corners with four equivalent O(4)Sr2Ce2Cu2 octahedra, corners with four equivalent O(3)Ce2Y2 tetrahedra, corners with six equivalent O(5)Ce2Y2 tetrahedra,  an edgeedge with one O(2)Sr2Ce2Cu2 octahedra, edges with two equivalent O(3)Ce2Y2 tetrahedra, and edges with three equivalent O(5)Ce2Y2 tetrahedra. The corner-sharing octahedral tilt angles range from 9-71°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Ce(1), and two equivalent Cu(1) atoms to form distorted OSr2Ce2Cu2 octahedra that share corners with two equivalent O(2)Sr2Ce2Cu2 octahedra, corners with two equivalent O(5)Ce2Y2 tetrahedra, corners with two equivalent O(6)Sr2Co2 tetrahedra, corners with four equivalent O(3)Ce2Y2 tetrahedra, edges with two equivalent O(2)Sr2Ce2Cu2 octahedra,  an edgeedge with one O(5)Ce2Y2 tetrahedra, faces with two equivalent O(2)Sr2Ce2Cu2 octahedra, and faces with two equivalent O(4)Sr2Ce2Cu2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the fifth O site, O(5) is bonded to two equivalent Ce(1) and two equivalent Y(1) atoms to form OCe2Y2 tetrahedra that share corners with two equivalent O(4)Sr2Ce2Cu2 octahedra, corners with four equivalent O(2)Sr2Ce2Cu2 octahedra, corners with four equivalent O(5)Ce2Y2 tetrahedra, corners with six equivalent O(3)Ce2Y2 tetrahedra,  an edgeedge with one O(4)Sr2Ce2Cu2 octahedra, edges with two equivalent O(5)Ce2Y2 tetrahedra, and edges with three equivalent O(3)Ce2Y2 tetrahedra. The corner-sharing octahedral tilt angles range from 9-71°. In the sixth O site, O(6) is bonded to two equivalent Sr(1) and two equivalent Co(1) atoms to form distorted OSr2Co2 tetrahedra that share corners with four equivalent O(2)Sr2Ce2Cu2 octahedra, corners with four equivalent O(4)Sr2Ce2Cu2 octahedra, and corners with two equivalent O(6)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 22-66°.
Sr2Ce2YCoCu2O11 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(6), two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. The Sr(1)-O(6) bond length is 2.44 Å. There is one shorter (2.77 Å) and one longer (2.78 Å) Sr(1)-O(2) bond length. Both Sr(1)-O(4) bond lengths are 2.81 Å. There are a spread of Sr(1)-O(1) bond distances ranging from 2.56-3.05 Å. Ce(1) is bonded in a body-centered cubic geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. There is one shorter (2.52 Å) and one longer (2.53 Å) Ce(1)-O(2) bond length. Both Ce(1)-O(3) bond lengths are 2.27 Å. Both Ce(1)-O(4) bond lengths are 2.56 Å. Both Ce(1)-O(5) bond lengths are 2.27 Å. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(3) and four equivalent O(5) atoms. All Y(1)-O(3) bond lengths are 2.38 Å. All Y(1)-O(5) bond lengths are 2.39 Å. Co(1) is bonded to two equivalent O(1) and two equivalent O(6) atoms to form CoO4 tetrahedra that share corners with two equivalent Cu(1)O5 square pyramids and corners with two equivalent Co(1)O4 tetrahedra. Both Co(1)-O(1) bond lengths are 1.83 Å. There is one shorter (1.95 Å) and one longer (1.96 Å) Co(1)-O(6) bond length. Cu(1) is bonded to one O(1), two equivalent O(2), and two equivalent O(4) atoms to form CuO5 square pyramids that share corners with four equivalent Cu(1)O5 square pyramids and  a cornercorner with one Co(1)O4 tetrahedra. The Cu(1)-O(1) bond length is 2.36 Å. Both Cu(1)-O(2) bond lengths are 1.95 Å. Both Cu(1)-O(4) bond lengths are 1.94 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Sr(1), one Co(1), and one Cu(1) atom. In the second O site, O(2) is bonded to two equivalent Sr(1), two equivalent Ce(1), and two equivalent Cu(1) atoms to form distorted OSr2Ce2Cu2 octahedra that share corners with two equivalent O(4)Sr2Ce2Cu2 octahedra, corners with two equivalent O(3)Ce2Y2 tetrahedra, corners with two equivalent O(6)Sr2Co2 tetrahedra, corners with four equivalent O(5)Ce2Y2 tetrahedra, edges with two equivalent O(4)Sr2Ce2Cu2 octahedra,  an edgeedge with one O(3)Ce2Y2 tetrahedra, faces with two equivalent O(2)Sr2Ce2Cu2 octahedra, and faces with two equivalent O(4)Sr2Ce2Cu2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the third O site, O(3) is bonded to two equivalent Ce(1) and two equivalent Y(1) atoms to form OCe2Y2 tetrahedra that share corners with two equivalent O(2)Sr2Ce2Cu2 octahedra, corners with four equivalent O(4)Sr2Ce2Cu2 octahedra, corners with four equivalent O(3)Ce2Y2 tetrahedra, corners with six equivalent O(5)Ce2Y2 tetrahedra,  an edgeedge with one O(2)Sr2Ce2Cu2 octahedra, edges with two equivalent O(3)Ce2Y2 tetrahedra, and edges with three equivalent O(5)Ce2Y2 tetrahedra. The corner-sharing octahedral tilt angles range from 9-71°. In the fourth O site, O(4) is bonded to two equivalent Sr(1), two equivalent Ce(1), and two equivalent Cu(1) atoms to form distorted OSr2Ce2Cu2 octahedra that share corners with two equivalent O(2)Sr2Ce2Cu2 octahedra, corners with two equivalent O(5)Ce2Y2 tetrahedra, corners with two equivalent O(6)Sr2Co2 tetrahedra, corners with four equivalent O(3)Ce2Y2 tetrahedra, edges with two equivalent O(2)Sr2Ce2Cu2 octahedra,  an edgeedge with one O(5)Ce2Y2 tetrahedra, faces with two equivalent O(2)Sr2Ce2Cu2 octahedra, and faces with two equivalent O(4)Sr2Ce2Cu2 octahedra. The corner-sharing octahedral tilt angles are 12°. In the fifth O site, O(5) is bonded to two equivalent Ce(1) and two equivalent Y(1) atoms to form OCe2Y2 tetrahedra that share corners with two equivalent O(4)Sr2Ce2Cu2 octahedra, corners with four equivalent O(2)Sr2Ce2Cu2 octahedra, corners with four equivalent O(5)Ce2Y2 tetrahedra, corners with six equivalent O(3)Ce2Y2 tetrahedra,  an edgeedge with one O(4)Sr2Ce2Cu2 octahedra, edges with two equivalent O(5)Ce2Y2 tetrahedra, and edges with three equivalent O(3)Ce2Y2 tetrahedra. The corner-sharing octahedral tilt angles range from 9-71°. In the sixth O site, O(6) is bonded to two equivalent Sr(1) and two equivalent Co(1) atoms to form distorted OSr2Co2 tetrahedra that share corners with four equivalent O(2)Sr2Ce2Cu2 octahedra, corners with four equivalent O(4)Sr2Ce2Cu2 octahedra, and corners with two equivalent O(6)Sr2Co2 tetrahedra. The corner-sharing octahedral tilt angles range from 22-66°.