DOI: 10.17188/1301399
title: Materials Data on Li4MnSn3(PO4)4 by Materials Project

description: Li4MnSn3(PO4)4 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are two inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded to six O2- atoms to form distorted LiO6 octahedra that share corners with two equivalent SnO6 pentagonal pyramids, corners with two PO4 tetrahedra, edges with two equivalent LiO6 octahedra, an edgeedge with one MnO6 pentagonal pyramid, and edges with two PO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.06–2.62 Å. In the second Li1+ site, Li1+ is bonded to six O2- atoms to form LiO6 octahedra that share corners with two equivalent MnO6 pentagonal pyramids, corners with two PO4 tetrahedra, edges with two equivalent LiO6 octahedra, an edgeedge with one SnO6 pentagonal pyramid, and edges with two PO4 tetrahedra. There are a spread of Li–O bond distances ranging from 2.15–2.28 Å. Mn2+ is bonded to six O2- atoms to form distorted MnO6 pentagonal pyramids that share corners with four equivalent LiO6 octahedra, corners with four equivalent SnO6 pentagonal pyramids, corners with four PO4 tetrahedra, edges with two equivalent LiO6 octahedra, and an edgeedge with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 55–74°. There are a spread of Mn–O bond distances ranging from 2.15–2.34 Å. There are three inequivalent Sn2+ sites. In the first Sn2+ site, Sn2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Sn–O bond distances ranging from 2.35–2.79 Å. In the second Sn2+ site, Sn2+ is bonded to six O2- atoms to form distorted SnO6 pentagonal pyramids that share corners with four equivalent LiO6 octahedra, corners with four equivalent MnO6 pentagonal pyramids, corners with four PO4 tetrahedra, edges with two equivalent LiO6 octahedra, and an edgeedge with one PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 55–78°. There are a spread of Sn–O bond distances ranging from 2.33–2.73 Å. In the third Sn2+ site, Sn2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Sn–O bond distances ranging from 2.27–2.63 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent LiO6 octahedra, a cornercorner with one SnO6 pentagonal pyramid, corners with two equivalent MnO6 pentagonal pyramids, edges with two equivalent LiO6 octahedra, and an edgeedge with one SnO6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 51°. There are a spread of P–O bond distances ranging from 1.53–1.59 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent LiO6 octahedra, a cornercorner with one SnO6 pentagonal pyramid, and edges with two equivalent LiO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There is one shorter (1.53 Å) and three longer (1.57 Å) P–O bond length. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent LiO6 octahedra, a cornercorner with one MnO6 pentagonal pyramid, corners with two equivalent SnO6 pentagonal pyramids, edges with two equivalent LiO6 octahedra, and an edgeedge with one MnO6 pentagonal pyramid. The corner-sharing octahedral tilt angles are 56°. There are a spread of P–O bond distances ranging from 1.54–1.58 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent LiO6 octahedra, a cornercorner with one MnO6 pentagonal pyramid, and edges with two equivalent LiO6 octahedra. The corner-sharing octahedral tilt angles are 53°. There are a spread of P–O bond distances ranging from 1.53–1.58 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Li1+, one Sn2+, and one P5+ atom. In the second O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, one Mn2+, one Sn2+, and one P5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Li1+, one Sn2+, and one P5+ atom. In the fourth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li1+, one Mn2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Sn2+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal pyramidal geometry to two equivalent Li1+, one Sn2+, and one P5+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Li1+, one Sn2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, one Mn2+, one Sn2+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Li1+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Li1+, one Sn2+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Sn2+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent Li1+, one Mn2+, and one P5+ atom.