Materials Data on Li4Mn3Sn5O16 by Materials Project
Li4Mn3Sn5O16 is Spinel-derived structured and crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are four inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with five MnO6 octahedra and corners with seven SnO6 octahedra. The corner-sharing octahedra tilt angles range from 53–62°. There are a spread of Li–O bond distances ranging from 2.01–2.10 Å. In the second Li1+ site, Li1+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.84–2.14 Å. In the third Li1+ site, Li1+ is bonded to four O2- atoms to form distorted LiO4 tetrahedra that share a cornercorner with one MnO6 octahedra, corners with five SnO6 octahedra, an edgeedge with one SnO6 octahedra, and edges with two equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 58–66°. There are a spread of Li–O bond distances ranging from 1.83–2.02 Å. In the fourth Li1+ site, Li1+ is bonded to four O2- atoms to form LiO4 tetrahedra that share corners with four MnO6 octahedra and corners with eight SnO6 octahedra. The corner-sharing octahedra tilt angles range from 57–64°. There are a spread of Li–O bond distances ranging from 2.01–2.11 Å. There are two inequivalent Mn+2.67+ sites. In the first Mn+2.67+ site, Mn+2.67+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent SnO6 octahedra, corners with four LiO4 tetrahedra, and edges with five SnO6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are a spread of Mn–O bond distances ranging from 2.09–2.21 Å. In the second Mn+2.67+ site, Mn+2.67+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent SnO6 octahedra, corners with three LiO4 tetrahedra, edges with two equivalent MnO6 octahedra, edges with three SnO6 octahedra, and an edgeedge with one LiO4 tetrahedra. The corner-sharing octahedra tilt angles range from 52–54°. There are a spread of Mn–O bond distances ranging from 1.98–2.27 Å. There are four inequivalent Sn4+ sites. In the first Sn4+ site, Sn4+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with two equivalent SnO6 octahedra, corners with four LiO4 tetrahedra, edges with two equivalent MnO6 octahedra, and edges with three SnO6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Sn–O bond distances ranging from 2.05–2.13 Å. In the second Sn4+ site, Sn4+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with two equivalent SnO6 octahedra, corners with four equivalent MnO6 octahedra, corners with six LiO4 tetrahedra, an edgeedge with one MnO6 octahedra, and edges with two equivalent SnO6 octahedra. The corner-sharing octahedra tilt angles range from 52–54°. There are a spread of Sn–O bond distances ranging from 2.09–2.23 Å. In the third Sn4+ site, Sn4+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with two equivalent SnO6 octahedra, corners with three LiO4 tetrahedra, an edgeedge with one SnO6 octahedra, edges with four equivalent MnO6 octahedra, and an edgeedge with one LiO4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. There are a spread of Sn–O bond distances ranging from 2.09–2.13 Å. In the fourth Sn4+ site, Sn4+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with two equivalent MnO6 octahedra, corners with four equivalent SnO6 octahedra, corners with three equivalent LiO4 tetrahedra, an edgeedge with one SnO6 octahedra, and edges with two equivalent MnO6 octahedra. The corner-sharing octahedra tilt angles range from 50–55°. There are a spread of Sn–O bond distances ranging from 2.08–2.23 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, one Mn+2.67+, and two Sn4+ atoms. In the second O2- site, O2- is bonded to one Li1+ and three Sn4+ atoms to form distorted corner-sharing OLiSn3 trigonal pyramids. In the third O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, one Mn+2.67+, and two equivalent Sn4+ atoms. In the fourth O2- site, O2- is bonded to one Li1+, one Mn+2.67+, and two equivalent Sn4+ atoms to form distorted corner-sharing OLiMnSn2 tetrahedra. In the fifth O2- site, O2- is bonded to one Li1+, two equivalent Mn+2.67+, and one Sn4+ atom to form distorted corner-sharing OLiMn2Sn tetrahedra. In the sixth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, one Mn+2.67+, and two Sn4+ atoms. In the seventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+ and three Sn4+ atoms. In the eighth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, two equivalent Mn+2.67+, and one Sn4+ atom. In the ninth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, one Mn+2.67+, and two Sn4+ atoms. In the tenth O2- site, O2- is bonded to one Li1+, two equivalent Mn+2.67+, and one Sn4+ atom to form distorted OLiMn2Sn tetrahedra that share corners with three equivalent OLiMn2Sn tetrahedra, a cornercorner with one OLiSn3 trigonal pyramid, and an edgeedge with one OLiMn2Sn tetrahedra. In the eleventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Li1+, one Mn+2.67+, and two Sn4+ atoms. In the twelfth O2- site, O2- is bonded to one Li1+, two equivalent Mn+2.67+, and one Sn4+ atom to form a mixture of distorted corner and edge-sharing OLiMn2Sn tetrahedra.