Sr2Zn3(AsO)2 crystallizes in the tetragonal I4/mmm space group. Sr(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 to four equivalent As(1) atoms to form a mixture of edge and corner-sharing ZnAs4 tetrahedra. In the second Zn site, Zn(2) is bonded in a square co-planar geometry to four equivalent O(1) atoms. As(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Zn(1) atoms. O(1) is bonded to four equivalent Sr(1) and two equivalent Zn(2) atoms to form a mixture of edge, corner, and face-sharing OSr4Zn2 octahedra. The corner-sharing octahedra are not tilted.
Sr2Zn3(AsO)2 crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded in a 4-coordinate geometry to four equivalent As(1) and four equivalent O(1) atoms. All Sr(1)-As(1) bond lengths are 3.33 Å. All Sr(1)-O(1) bond lengths are 2.63 Å. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to four equivalent As(1) atoms to form a mixture of edge and corner-sharing ZnAs4 tetrahedra. All Zn(1)-As(1) bond lengths are 2.59 Å. In the second Zn site, Zn(2) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Zn(2)-O(1) bond lengths are 2.07 Å. As(1) is bonded in a 8-coordinate geometry to four equivalent Sr(1) and four equivalent Zn(1) atoms. O(1) is bonded to four equivalent Sr(1) and two equivalent Zn(2) atoms to form a mixture of edge, corner, and face-sharing OSr4Zn2 octahedra. The corner-sharing octahedra are not tilted.