BaYAgCuO5 crystallizes in the tetragonal P4mm space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. Ag(1) is bonded to one O(3) and four equivalent O(1) atoms to form distorted AgO5 trigonal bipyramids that share  a cornercorner with one Cu(1)O5 square pyramid and corners with four equivalent Ag(1)O5 trigonal bipyramids. Cu(1) is bonded to one O(3) and four equivalent O(2) atoms to form CuO5 square pyramids that share corners with four equivalent Cu(1)O5 square pyramids and  a cornercorner with one Ag(1)O5 trigonal bipyramid. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent Ag(1) atoms to form distorted OY2Ag2 tetrahedra that share corners with two equivalent O(3)Ba4CuAg octahedra, corners with four equivalent O(1)Y2Ag2 tetrahedra, and edges with four equivalent O(1)Y2Ag2 tetrahedra. The corner-sharing octahedral tilt angles are 74°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Cu(1) atoms. In the third O site, O(3) is bonded to four equivalent Ba(1), one Ag(1), and one Cu(1) atom to form OBa4CuAg octahedra that share corners with four equivalent O(3)Ba4CuAg octahedra, corners with four equivalent O(1)Y2Ag2 tetrahedra, and edges with four equivalent O(3)Ba4CuAg octahedra. The corner-sharing octahedral tilt angles are 4°.
BaYAgCuO5 crystallizes in the tetragonal P4mm space group. Ba(1) is bonded in a 8-coordinate geometry to four equivalent O(2) and four equivalent O(3) atoms. All Ba(1)-O(2) bond lengths are 3.01 Å. All Ba(1)-O(3) bond lengths are 2.82 Å. Y(1) is bonded in a body-centered cubic geometry to four equivalent O(1) and four equivalent O(2) atoms. All Y(1)-O(1) bond lengths are 2.41 Å. All Y(1)-O(2) bond lengths are 2.44 Å. Ag(1) is bonded to one O(3) and four equivalent O(1) atoms to form distorted AgO5 trigonal bipyramids that share  a cornercorner with one Cu(1)O5 square pyramid and corners with four equivalent Ag(1)O5 trigonal bipyramids. The Ag(1)-O(3) bond length is 2.33 Å. All Ag(1)-O(1) bond lengths are 2.07 Å. Cu(1) is bonded to one O(3) and four equivalent O(2) atoms to form CuO5 square pyramids that share corners with four equivalent Cu(1)O5 square pyramids and  a cornercorner with one Ag(1)O5 trigonal bipyramid. The Cu(1)-O(3) bond length is 2.02 Å. All Cu(1)-O(2) bond lengths are 2.02 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Y(1) and two equivalent Ag(1) atoms to form distorted OY2Ag2 tetrahedra that share corners with two equivalent O(3)Ba4CuAg octahedra, corners with four equivalent O(1)Y2Ag2 tetrahedra, and edges with four equivalent O(1)Y2Ag2 tetrahedra. The corner-sharing octahedral tilt angles are 74°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Y(1), and two equivalent Cu(1) atoms. In the third O site, O(3) is bonded to four equivalent Ba(1), one Ag(1), and one Cu(1) atom to form OBa4CuAg octahedra that share corners with four equivalent O(3)Ba4CuAg octahedra, corners with four equivalent O(1)Y2Ag2 tetrahedra, and edges with four equivalent O(3)Ba4CuAg octahedra. The corner-sharing octahedral tilt angles are 4°.