(CuO2)(Y)(CuO2) crystallizes in the monoclinic C2/c space group. Y(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1), one Cu(1), and one Cu(2) atom to form a mixture of edge and corner-sharing OY2Cu2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Y(1), one Cu(1), and one Cu(2) atom to form a mixture of distorted edge and corner-sharing OY2Cu2 tetrahedra.
(CuO2)(Y)(CuO2) crystallizes in the monoclinic C2/c space group. Y(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. There are two shorter (2.36 Å) and two longer (2.37 Å) Y(1)-O(1) bond lengths. There are two shorter (2.36 Å) and two longer (2.39 Å) Y(1)-O(2) bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(1)-O(1) bond lengths are 1.84 Å. Both Cu(1)-O(2) bond lengths are 1.86 Å. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(2)-O(1) bond lengths are 1.93 Å. Both Cu(2)-O(2) bond lengths are 1.91 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1), one Cu(1), and one Cu(2) atom to form a mixture of edge and corner-sharing OY2Cu2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Y(1), one Cu(1), and one Cu(2) atom to form a mixture of distorted edge and corner-sharing OY2Cu2 tetrahedra.