Li2Cr3SnO8 is Spinel-derived structured and crystallizes in the trigonal R3m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1) and three equivalent O(2) atoms to form LiO4 tetrahedra that share corners with three equivalent Li(2)O6 octahedra and corners with nine equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. In the second Li site, Li(2) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form LiO6 octahedra that share corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, and edges with six equivalent Cr(1)O6 octahedra. Cr(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, edges with two equivalent Li(2)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. Sn(1) is bonded to one O(4) and three equivalent O(3) atoms to form SnO4 tetrahedra that share corners with three equivalent Li(2)O6 octahedra and corners with nine equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-62°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(1) and three equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(2), and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded to one Li(2), two equivalent Cr(1), and one Sn(1) atom to form distorted OLiCr2Sn tetrahedra that share corners with two equivalent O(3)LiCr2Sn tetrahedra,  a cornercorner with one O(4)Cr3Sn trigonal pyramid, edges with two equivalent O(3)LiCr2Sn tetrahedra, and  an edgeedge with one O(4)Cr3Sn trigonal pyramid. In the fourth O site, O(4) is bonded to three equivalent Cr(1) and one Sn(1) atom to form a mixture of distorted corner and edge-sharing OCr3Sn trigonal pyramids.
Li2Cr3SnO8 is Spinel-derived structured and crystallizes in the trigonal R3m space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1) and three equivalent O(2) atoms to form LiO4 tetrahedra that share corners with three equivalent Li(2)O6 octahedra and corners with nine equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-62°. The Li(1)-O(1) bond length is 2.02 Å. All Li(1)-O(2) bond lengths are 2.00 Å. In the second Li site, Li(2) is bonded to three equivalent O(2) and three equivalent O(3) atoms to form LiO6 octahedra that share corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, and edges with six equivalent Cr(1)O6 octahedra. All Li(2)-O(2) bond lengths are 2.13 Å. All Li(2)-O(3) bond lengths are 2.06 Å. Cr(1) is bonded to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Sn(1)O4 tetrahedra, edges with two equivalent Li(2)O6 octahedra, and edges with four equivalent Cr(1)O6 octahedra. The Cr(1)-O(1) bond length is 1.99 Å. The Cr(1)-O(4) bond length is 2.11 Å. Both Cr(1)-O(2) bond lengths are 1.91 Å. Both Cr(1)-O(3) bond lengths are 2.07 Å. Sn(1) is bonded to one O(4) and three equivalent O(3) atoms to form SnO4 tetrahedra that share corners with three equivalent Li(2)O6 octahedra and corners with nine equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-62°. The Sn(1)-O(4) bond length is 2.04 Å. All Sn(1)-O(3) bond lengths are 1.98 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Li(1) and three equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Li(1), one Li(2), and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded to one Li(2), two equivalent Cr(1), and one Sn(1) atom to form distorted OLiCr2Sn tetrahedra that share corners with two equivalent O(3)LiCr2Sn tetrahedra,  a cornercorner with one O(4)Cr3Sn trigonal pyramid, edges with two equivalent O(3)LiCr2Sn tetrahedra, and  an edgeedge with one O(4)Cr3Sn trigonal pyramid. In the fourth O site, O(4) is bonded to three equivalent Cr(1) and one Sn(1) atom to form a mixture of distorted corner and edge-sharing OCr3Sn trigonal pyramids.