BaSrY(CuO2)4 crystallizes in the orthorhombic Amm2 space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(3), two equivalent O(5), two equivalent O(7), and four equivalent O(1) atoms. Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(4), two equivalent O(6), two equivalent O(8), and four equivalent O(2) atoms. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(1), one O(8), and two equivalent O(7) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to one O(2), one O(7), and two equivalent O(8) atoms. In the third Cu site, Cu(3) is bonded to one O(1), two equivalent O(3), and two equivalent O(5) atoms to form corner-sharing CuO5 square pyramids. In the fourth Cu site, Cu(4) is bonded to one O(2), two equivalent O(4), and two equivalent O(6) atoms to form corner-sharing CuO5 square pyramids. There are eight inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Cu(1), and one Cu(3) atom to form a mixture of distorted edge and corner-sharing OBa4Cu2 octahedra. The corner-sharing octahedral tilt angles are 10°. In the second O site, O(2) is bonded to four equivalent Sr(1), one Cu(2), and one Cu(4) atom to form a mixture of distorted edge and corner-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles are 10°. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Cu(3) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(4) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Cu(3) atoms. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(4) atoms. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to two equivalent Ba(1), one Cu(2), and two equivalent Cu(1) atoms. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to two equivalent Sr(1), one Cu(1), and two equivalent Cu(2) atoms.
BaSrY(CuO2)4 crystallizes in the orthorhombic Amm2 space group. Ba(1) is bonded in a 10-coordinate geometry to two equivalent O(3), two equivalent O(5), two equivalent O(7), and four equivalent O(1) atoms. Both Ba(1)-O(3) bond lengths are 3.00 Å. Both Ba(1)-O(5) bond lengths are 3.03 Å. Both Ba(1)-O(7) bond lengths are 2.97 Å. All Ba(1)-O(1) bond lengths are 2.74 Å. Sr(1) is bonded in a 10-coordinate geometry to two equivalent O(4), two equivalent O(6), two equivalent O(8), and four equivalent O(2) atoms. Both Sr(1)-O(4) bond lengths are 2.90 Å. Both Sr(1)-O(6) bond lengths are 2.93 Å. Both Sr(1)-O(8) bond lengths are 2.95 Å. All Sr(1)-O(2) bond lengths are 2.74 Å. Y(1) is bonded in a body-centered cubic geometry to two equivalent O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. Both Y(1)-O(3) bond lengths are 2.40 Å. Both Y(1)-O(4) bond lengths are 2.42 Å. Both Y(1)-O(5) bond lengths are 2.41 Å. Both Y(1)-O(6) bond lengths are 2.43 Å. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to one O(1), one O(8), and two equivalent O(7) atoms. The Cu(1)-O(1) bond length is 1.86 Å. The Cu(1)-O(8) bond length is 1.91 Å. Both Cu(1)-O(7) bond lengths are 1.95 Å. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to one O(2), one O(7), and two equivalent O(8) atoms. The Cu(2)-O(2) bond length is 1.85 Å. The Cu(2)-O(7) bond length is 1.89 Å. Both Cu(2)-O(8) bond lengths are 1.95 Å. In the third Cu site, Cu(3) is bonded to one O(1), two equivalent O(3), and two equivalent O(5) atoms to form corner-sharing CuO5 square pyramids. The Cu(3)-O(1) bond length is 2.28 Å. Both Cu(3)-O(3) bond lengths are 1.97 Å. Both Cu(3)-O(5) bond lengths are 1.94 Å. In the fourth Cu site, Cu(4) is bonded to one O(2), two equivalent O(4), and two equivalent O(6) atoms to form corner-sharing CuO5 square pyramids. The Cu(4)-O(2) bond length is 2.18 Å. Both Cu(4)-O(4) bond lengths are 1.96 Å. Both Cu(4)-O(6) bond lengths are 1.94 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Ba(1), one Cu(1), and one Cu(3) atom to form a mixture of distorted edge and corner-sharing OBa4Cu2 octahedra. The corner-sharing octahedral tilt angles are 10°. In the second O site, O(2) is bonded to four equivalent Sr(1), one Cu(2), and one Cu(4) atom to form a mixture of distorted edge and corner-sharing OSr4Cu2 octahedra. The corner-sharing octahedral tilt angles are 10°. In the third O site, O(3) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Cu(3) atoms. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(4) atoms. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Cu(3) atoms. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to two equivalent Sr(1), two equivalent Y(1), and two equivalent Cu(4) atoms. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to two equivalent Ba(1), one Cu(2), and two equivalent Cu(1) atoms. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to two equivalent Sr(1), one Cu(1), and two equivalent Cu(2) atoms.