ZnSn2O4 is Spinel-like structured and crystallizes in the trigonal R3m space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(3) and three equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-58°. In the second Zn site, Zn(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form ZnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, and edges with six equivalent Sn(2)O6 octahedra. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2) and three equivalent O(1) atoms to form SnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-63°. In the second Sn site, Sn(2) is bonded to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, edges with two equivalent Zn(2)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Zn(2), one Sn(1), and two equivalent Sn(2) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(2)Sn4 tetrahedra, corners with two equivalent O(1)ZnSn3 tetrahedra,  an edgeedge with one O(2)Sn4 tetrahedra, and edges with two equivalent O(1)ZnSn3 tetrahedra. In the second O site, O(2) is bonded to one Sn(1) and three equivalent Sn(2) atoms to form a mixture of corner and edge-sharing OSn4 tetrahedra. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1) and three equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(2), and two equivalent Sn(2) atoms.
ZnSn2O4 is Spinel-like structured and crystallizes in the trigonal R3m space group. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(3) and three equivalent O(4) atoms to form ZnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-58°. The Zn(1)-O(3) bond length is 2.14 Å. All Zn(1)-O(4) bond lengths are 2.16 Å. In the second Zn site, Zn(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form ZnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, and edges with six equivalent Sn(2)O6 octahedra. All Zn(2)-O(1) bond lengths are 2.17 Å. All Zn(2)-O(4) bond lengths are 2.28 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2) and three equivalent O(1) atoms to form SnO4 tetrahedra that share corners with three equivalent Zn(2)O6 octahedra and corners with nine equivalent Sn(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-63°. The Sn(1)-O(2) bond length is 2.35 Å. All Sn(1)-O(1) bond lengths are 2.34 Å. In the second Sn site, Sn(2) is bonded to one O(2), one O(3), two equivalent O(1), and two equivalent O(4) atoms to form SnO6 octahedra that share corners with three equivalent Zn(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, edges with two equivalent Zn(2)O6 octahedra, and edges with four equivalent Sn(2)O6 octahedra. The Sn(2)-O(2) bond length is 2.20 Å. The Sn(2)-O(3) bond length is 2.27 Å. Both Sn(2)-O(1) bond lengths are 2.16 Å. Both Sn(2)-O(4) bond lengths are 2.22 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Zn(2), one Sn(1), and two equivalent Sn(2) atoms to form OZnSn3 tetrahedra that share  a cornercorner with one O(2)Sn4 tetrahedra, corners with two equivalent O(1)ZnSn3 tetrahedra,  an edgeedge with one O(2)Sn4 tetrahedra, and edges with two equivalent O(1)ZnSn3 tetrahedra. In the second O site, O(2) is bonded to one Sn(1) and three equivalent Sn(2) atoms to form a mixture of corner and edge-sharing OSn4 tetrahedra. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1) and three equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Zn(1), one Zn(2), and two equivalent Sn(2) atoms.