Sr2YAgCu2O7 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. Ag(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(4) atoms. Cu(1) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CuO5 square pyramids. There are four inequivalent O sites. In the first O site, O(4) is bonded to four equivalent Sr(1), one Ag(1), and one Cu(1) atom to form a mixture of edge and corner-sharing OSr4CuAg octahedra. The corner-sharing octahedral tilt angles range from 6-12°. In the second O site, O(1) is bonded in a distorted see-saw-like geometry to two equivalent Sr(1) and two equivalent Ag(1) atoms. In the third O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(1) atoms. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(1) atoms.
Sr2YAgCu2O7 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. The Sr(1)-O(1) bond length is 2.41 Å. There is one shorter (2.88 Å) and one longer (2.92 Å) Sr(1)-O(2) bond length. There is one shorter (2.88 Å) and one longer (2.91 Å) Sr(1)-O(3) bond length. There are a spread of Sr(1)-O(4) bond distances ranging from 2.69-2.71 Å. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(2) and four equivalent O(3) atoms. There are two shorter (2.38 Å) and two longer (2.39 Å) Y(1)-O(2) bond lengths. There are two shorter (2.39 Å) and two longer (2.40 Å) Y(1)-O(3) bond lengths. Ag(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(4) atoms. There is one shorter (2.28 Å) and one longer (2.43 Å) Ag(1)-O(1) bond length. Both Ag(1)-O(4) bond lengths are 2.10 Å. Cu(1) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing CuO5 square pyramids. The Cu(1)-O(4) bond length is 2.16 Å. There is one shorter (1.92 Å) and one longer (1.93 Å) Cu(1)-O(2) bond length. There is one shorter (1.92 Å) and one longer (1.93 Å) Cu(1)-O(3) bond length. There are four inequivalent O sites. In the first O site, O(4) is bonded to four equivalent Sr(1), one Ag(1), and one Cu(1) atom to form a mixture of edge and corner-sharing OSr4CuAg octahedra. The corner-sharing octahedral tilt angles range from 6-12°. In the second O site, O(1) is bonded in a distorted see-saw-like geometry to two equivalent Sr(1) and two equivalent Ag(1) atoms. In the third O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(1) atoms. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(1) atoms.