Tl(CuO)2 crystallizes in the orthorhombic Imma space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. In the second Cu site, Cu(2) is bonded in a linear geometry to two equivalent O(1) atoms. Tl(1) is bonded in an L-shaped geometry to two equivalent O(1) atoms. O(1) is bonded to one Cu(2), two equivalent Cu(1), and one Tl(1) atom to form a mixture of distorted corner and edge-sharing OTlCu3 tetrahedra.
Tl(CuO)2 crystallizes in the orthorhombic Imma space group. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Cu(1)-O(1) bond lengths are 1.95 Å. In the second Cu site, Cu(2) is bonded in a linear geometry to two equivalent O(1) atoms. Both Cu(2)-O(1) bond lengths are 1.82 Å. Tl(1) is bonded in an L-shaped geometry to two equivalent O(1) atoms. Both Tl(1)-O(1) bond lengths are 2.44 Å. O(1) is bonded to one Cu(2), two equivalent Cu(1), and one Tl(1) atom to form a mixture of distorted corner and edge-sharing OTlCu3 tetrahedra.