Co3SnO8 is beta Vanadium nitride-derived structured and crystallizes in the hexagonal P6_3mc space group. Co(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CoO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra,  an edgeedge with one Sn(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. Sn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Co(1)O6 octahedra and edges with three equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Co(1) and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Co(1) and one Sn(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms.
Co3SnO8 is beta Vanadium nitride-derived structured and crystallizes in the hexagonal P6_3mc space group. Co(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form CoO6 octahedra that share corners with two equivalent Sn(1)O6 octahedra,  an edgeedge with one Sn(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. The Co(1)-O(3) bond length is 1.90 Å. The Co(1)-O(4) bond length is 1.91 Å. Both Co(1)-O(1) bond lengths are 1.87 Å. Both Co(1)-O(2) bond lengths are 1.88 Å. Sn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Co(1)O6 octahedra and edges with three equivalent Co(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. All Sn(1)-O(1) bond lengths are 2.06 Å. All Sn(1)-O(2) bond lengths are 2.15 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Co(1) and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Co(1) and one Sn(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms.