Zn(SnO2)4 crystallizes in the monoclinic Cm space group. Zn(1) is bonded in a distorted trigonal non-coplanar geometry to one O(4), two equivalent O(6), and two equivalent O(7) atoms. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form SnO6 octahedra that share corners with two equivalent Sn(3)O6 octahedra, corners with two equivalent Sn(2)O4 tetrahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles are 48°. In the second Sn site, Sn(2) is bonded to one O(4), one O(8), and two equivalent O(3) atoms to form SnO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, and corners with two equivalent Sn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-65°. In the third Sn site, Sn(3) is bonded to one O(1), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form SnO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, corners with two equivalent Sn(2)O4 tetrahedra, and edges with two equivalent Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the fourth Sn site, Sn(4) is bonded to one O(3), one O(5), two equivalent O(1), and two equivalent O(7) atoms to form SnO6 octahedra that share corners with two equivalent Sn(3)O6 octahedra, corners with two equivalent Sn(2)O4 tetrahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Sn(3) and two equivalent Sn(4) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Sn(1) and two equivalent Sn(3) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Sn(4) and two equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded to one Zn(1), one Sn(2), and two equivalent Sn(1) atoms to form distorted OZnSn3 tetrahedra that share corners with two equivalent O(4)ZnSn3 tetrahedra and edges with two equivalent O(7)Zn2Sn3 square pyramids. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Sn(4) and two equivalent Sn(1) atoms. In the sixth O site, O(6) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one Sn(3) atom. In the seventh O site, O(7) is bonded to two equivalent Zn(1), one Sn(1), and two equivalent Sn(4) atoms to form distorted OZn2Sn3 square pyramids that share edges with two equivalent O(7)Zn2Sn3 square pyramids and edges with two equivalent O(4)ZnSn3 tetrahedra. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Sn(2) and two equivalent Sn(3) atoms.
Zn(SnO2)4 crystallizes in the monoclinic Cm space group. Zn(1) is bonded in a distorted trigonal non-coplanar geometry to one O(4), two equivalent O(6), and two equivalent O(7) atoms. The Zn(1)-O(4) bond length is 2.12 Å. Both Zn(1)-O(6) bond lengths are 1.92 Å. Both Zn(1)-O(7) bond lengths are 2.58 Å. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to one O(2), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form SnO6 octahedra that share corners with two equivalent Sn(3)O6 octahedra, corners with two equivalent Sn(2)O4 tetrahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles are 48°. The Sn(1)-O(2) bond length is 2.04 Å. The Sn(1)-O(7) bond length is 2.16 Å. Both Sn(1)-O(4) bond lengths are 2.14 Å. Both Sn(1)-O(5) bond lengths are 2.13 Å. In the second Sn site, Sn(2) is bonded to one O(4), one O(8), and two equivalent O(3) atoms to form SnO4 tetrahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(3)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, and corners with two equivalent Sn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-65°. The Sn(2)-O(4) bond length is 2.51 Å. The Sn(2)-O(8) bond length is 2.56 Å. Both Sn(2)-O(3) bond lengths are 2.16 Å. In the third Sn site, Sn(3) is bonded to one O(1), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form SnO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra, corners with two equivalent Sn(4)O6 octahedra, corners with two equivalent Sn(2)O4 tetrahedra, and edges with two equivalent Sn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. The Sn(3)-O(1) bond length is 2.17 Å. The Sn(3)-O(6) bond length is 2.09 Å. Both Sn(3)-O(2) bond lengths are 2.18 Å. Both Sn(3)-O(8) bond lengths are 2.05 Å. In the fourth Sn site, Sn(4) is bonded to one O(3), one O(5), two equivalent O(1), and two equivalent O(7) atoms to form SnO6 octahedra that share corners with two equivalent Sn(3)O6 octahedra, corners with two equivalent Sn(2)O4 tetrahedra, edges with two equivalent Sn(1)O6 octahedra, and edges with two equivalent Sn(4)O6 octahedra. The corner-sharing octahedral tilt angles are 54°. The Sn(4)-O(3) bond length is 2.07 Å. The Sn(4)-O(5) bond length is 2.14 Å. Both Sn(4)-O(1) bond lengths are 2.07 Å. Both Sn(4)-O(7) bond lengths are 2.18 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Sn(3) and two equivalent Sn(4) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Sn(1) and two equivalent Sn(3) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Sn(4) and two equivalent Sn(2) atoms. In the fourth O site, O(4) is bonded to one Zn(1), one Sn(2), and two equivalent Sn(1) atoms to form distorted OZnSn3 tetrahedra that share corners with two equivalent O(4)ZnSn3 tetrahedra and edges with two equivalent O(7)Zn2Sn3 square pyramids. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Sn(4) and two equivalent Sn(1) atoms. In the sixth O site, O(6) is bonded in a trigonal planar geometry to two equivalent Zn(1) and one Sn(3) atom. In the seventh O site, O(7) is bonded to two equivalent Zn(1), one Sn(1), and two equivalent Sn(4) atoms to form distorted OZn2Sn3 square pyramids that share edges with two equivalent O(7)Zn2Sn3 square pyramids and edges with two equivalent O(4)ZnSn3 tetrahedra. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Sn(2) and two equivalent Sn(3) atoms.