Ba2YW3O8 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with eight equivalent Ba(1)O12 cuboctahedra, faces with five equivalent Ba(1)O12 cuboctahedra, and faces with four equivalent W(2)O6 octahedra. Y(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. In the second W site, W(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form WO6 octahedra that share corners with four equivalent W(2)O6 octahedra and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), two equivalent Y(1), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing OBa2Y2W2 octahedra. The corner-sharing octahedral tilt angles range from 0-67°. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Ba(1) and two equivalent W(2) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to four equivalent Ba(1) and one W(2) atom.
Ba2YW3O8 crystallizes in the tetragonal P4/mmm space group. Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with eight equivalent Ba(1)O12 cuboctahedra, faces with five equivalent Ba(1)O12 cuboctahedra, and faces with four equivalent W(2)O6 octahedra. All Ba(1)-O(1) bond lengths are 2.95 Å. All Ba(1)-O(2) bond lengths are 3.02 Å. All Ba(1)-O(3) bond lengths are 2.93 Å. Y(1) is bonded in a body-centered cubic geometry to eight equivalent O(1) atoms. All Y(1)-O(1) bond lengths are 2.65 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms. All W(1)-O(1) bond lengths are 2.10 Å. In the second W site, W(2) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form WO6 octahedra that share corners with four equivalent W(2)O6 octahedra and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Both W(2)-O(3) bond lengths are 1.93 Å. All W(2)-O(2) bond lengths are 2.06 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ba(1), two equivalent Y(1), and two equivalent W(1) atoms to form a mixture of distorted edge, corner, and face-sharing OBa2Y2W2 octahedra. The corner-sharing octahedral tilt angles range from 0-67°. In the second O site, O(2) is bonded in a distorted linear geometry to four equivalent Ba(1) and two equivalent W(2) atoms. In the third O site, O(3) is bonded in a distorted single-bond geometry to four equivalent Ba(1) and one W(2) atom.