DOI: 10.17188/1306840
title: Materials Data on Li9Mn2P4HO18 by Materials Project

description: Li9Mn2P4HO18 crystallizes in the orthorhombic Ima2 space group. The structure is three-dimensional. there are eight inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Li–O bond distances ranging from 2.09–2.60 Å. In the second Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share corners with four PO4 tetrahedra and edges with two equivalent MnO6 octahedra. There are a spread of Li–O bond distances ranging from 1.95–2.23 Å. In the third Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share corners with four PO4 tetrahedra, a cornercorner with one LiO5 trigonal bipyramid, and edges with two equivalent MnO6 octahedra. There are a spread of Li–O bond distances ranging from 1.97–2.18 Å. In the fourth Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share corners with four PO4 tetrahedra, a cornercorner with one LiO5 trigonal bipyramid, and edges with two equivalent MnO6 octahedra. There are a spread of Li–O bond distances ranging from 2.00–2.25 Å. In the fifth Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are two shorter (2.16 Å) and two longer (2.19 Å) Li–O bond lengths. In the sixth Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are two shorter (2.12 Å) and two longer (2.27 Å) Li–O bond lengths. In the seventh Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are two shorter (2.15 Å) and two longer (2.20 Å) Li–O bond lengths. In the eighth Li1+ site, Li1+ is bonded in a distorted square co-planar geometry to four O2- atoms. There are two shorter (2.12 Å) and two longer (2.14 Å) Li–O bond lengths. Mn3+ is bonded to six O2- atoms to form MnO6 octahedra that share corners with two equivalent MnO6 octahedra, corners with four PO4 tetrahedra, and edges with three LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 52–55°. There are a spread of Mn–O bond distances ranging from 1.84–2.12 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 MnO6 octahedra and corners with four LiO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 51°. There is one shorter (1.54 Å) and three longer (1.56 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent MnO6 octahedra and corners with four LiO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 54°. There is one shorter (1.55 Å) and three longer (1.56 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 MnO6 octahedra and a cornercorner with one LiO5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 55°. There are a spread of P–O bond distances ranging from 1.54–1.56 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent MnO6 octahedra and corners with three equivalent LiO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 52°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 6-coordinate geometry to five Li1+ and one P5+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to four Li1+ and one P5+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one Li1+, one Mn3+, and one P5+ atom. In the fourth O2- site, O2- is bonded to two Li1+, one Mn3+, and one P5+ atom to form distorted OLi2MnP trigonal pyramids that share corners with three OLi3P tetrahedra, corners with three OLi2MnP trigonal pyramids, and an edgeedge with one OLi2Mn2 tetrahedra. In the fifth O2- site, O2- is bonded to two Li1+ and two equivalent Mn3+ atoms to form distorted OLi2Mn2 tetrahedra that share a cornercorner with one OLi3P tetrahedra, a cornercorner with one OLi3P trigonal pyramid, and edges with two equivalent OLi2MnP trigonal pyramids. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Li1+, two equivalent Mn3+, and one H1+ atom. In the seventh O2- site, O2- is bonded to three Li1+ and one P5+ atom to form distorted corner-sharing OLi3P tetrahedra. In the eighth O2- site, O2- is bonded to three Li1+ and one P5+ atom to form distorted OLi3P trigonal pyramids that share corners with three OLi2Mn2 tetrahedra and corners with two equivalent OLi2MnP trigonal pyramids. In the ninth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Li1+, one Mn3+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to two Li1+, one Mn3+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Li1+ and one P5+ atom. In the twelfth O2- site, O2- is bonded to three Li1+ and one P5+ atom to form distorted OLi3P tetrahedra that share corners with three OLi2Mn2 tetrahedra and corners with four equivalent OLi2MnP trigonal pyramids. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Li1+ and one P5+ atom. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Li1+ and one P5+ atom.