Ba2Zn3(AsO)2 crystallizes in the tetragonal I4/mmm space group. Ba(1) is bonded in a 4-coordinate geometry to four equivalent As(1) and four equivalent O(1) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. In the second Zn site, Zn(2) is bonded to four equivalent As(1) atoms to form a mixture of corner and edge-sharing ZnAs4 tetrahedra. As(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Zn(2) atoms. O(1) is bonded to four equivalent Ba(1) and two equivalent Zn(1) atoms to form a mixture of corner, edge, and face-sharing OBa4Zn2 octahedra. The corner-sharing octahedra are not tilted.
Ba2Zn3(AsO)2 crystallizes in the tetragonal I4/mmm space group. Ba(1) is bonded in a 4-coordinate geometry to four equivalent As(1) and four equivalent O(1) atoms. All Ba(1)-As(1) bond lengths are 3.45 Å. All Ba(1)-O(1) bond lengths are 2.77 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Zn(1)-O(1) bond lengths are 2.11 Å. In the second Zn site, Zn(2) is bonded to four equivalent As(1) atoms to form a mixture of corner and edge-sharing ZnAs4 tetrahedra. All Zn(2)-As(1) bond lengths are 2.60 Å. As(1) is bonded in a 8-coordinate geometry to four equivalent Ba(1) and four equivalent Zn(2) atoms. O(1) is bonded to four equivalent Ba(1) and two equivalent Zn(1) atoms to form a mixture of corner, edge, and face-sharing OBa4Zn2 octahedra. The corner-sharing octahedra are not tilted.