Ba(CuO)4 crystallizes in the tetragonal P4/nbm space group. Ba(1) is bonded in a 8-coordinate geometry to eight equivalent O(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to two equivalent O(1) atoms. In the second Cu site, Cu(2) is bonded in a linear geometry to two equivalent O(1) atoms. O(1) is bonded to two equivalent Ba(1), one Cu(1), and one Cu(2) atom to form a mixture of distorted corner and edge-sharing OBa2Cu2 tetrahedra.
Ba(CuO)4 crystallizes in the tetragonal P4/nbm space group. Ba(1) is bonded in a 8-coordinate geometry to eight equivalent O(1) atoms. All Ba(1)-O(1) bond lengths are 2.81 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to two equivalent O(1) atoms. Both Cu(1)-O(1) bond lengths are 1.80 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 1.80 Å. O(1) is bonded to two equivalent Ba(1), one Cu(1), and one Cu(2) atom to form a mixture of distorted corner and edge-sharing OBa2Cu2 tetrahedra.