DOI: 10.17188/1653415
title: Materials Data on Li3CrPCO7 by Materials Project

description: Li3CrCPO7 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Li1+ sites. In the first Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 1.88–2.62 Å. In the second Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.91–2.30 Å. In the third Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share a cornercorner with one LiO6 octahedra, a cornercorner with one CrO6 octahedra, and corners with three PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 69–89°. There are a spread of Li–O bond distances ranging from 2.07–2.54 Å. In the fourth Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share a cornercorner with one CrO6 octahedra, corners with three PO4 tetrahedra, an edgeedge with one CrO6 octahedra, and edges with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 65°. There are a spread of Li–O bond distances ranging from 2.07–2.47 Å. In the fifth Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share a cornercorner with one CrO6 octahedra, corners with three PO4 tetrahedra, an edgeedge with one CrO6 octahedra, and edges with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 65°. There are a spread of Li–O bond distances ranging from 2.06–2.44 Å. In the sixth Li1+ site, Li1+ is bonded to six O2- atoms to form distorted LiO6 octahedra that share corners with four PO4 tetrahedra and corners with two LiO5 trigonal bipyramids. There are a spread of Li–O bond distances ranging from 2.02–2.51 Å. In the seventh Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share a cornercorner with one LiO6 octahedra, a cornercorner with one CrO6 octahedra, corners with three PO4 tetrahedra, and an edgeedge with one CrO6 octahedra. The corner-sharing octahedra tilt angles range from 65–92°. There are a spread of Li–O bond distances ranging from 2.14–2.25 Å. In the eighth Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 2.12–2.38 Å. In the ninth Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 2.04–2.46 Å. In the tenth Li1+ site, Li1+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Li–O bond distances ranging from 2.06–2.44 Å. In the eleventh Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.92–2.17 Å. In the twelfth Li1+ site, Li1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Li–O bond distances ranging from 1.92–2.21 Å. There are four inequivalent Cr2+ sites. In the first Cr2+ site, Cr2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cr–O bond distances ranging from 2.07–2.34 Å. In the second Cr2+ site, Cr2+ is bonded to six O2- atoms to form distorted CrO6 octahedra that share corners with four PO4 tetrahedra, corners with two LiO5 trigonal bipyramids, and edges with two LiO5 trigonal bipyramids. There are a spread of Cr–O bond distances ranging from 2.04–2.50 Å. In the third Cr2+ site, Cr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cr–O bond distances ranging from 2.04–2.54 Å. In the fourth Cr2+ site, Cr2+ is bonded to six O2- atoms to form distorted CrO6 octahedra that share corners with four PO4 tetrahedra, corners with two LiO5 trigonal bipyramids, and an edgeedge with one LiO5 trigonal bipyramid. There are a spread of Cr–O bond distances ranging from 2.04–2.47 Å. There are four inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.28–1.34 Å. In the second C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.29–1.31 Å. In the third C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.28 Å) and one longer (1.36 Å) C–O bond length. In the fourth C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is one shorter (1.28 Å) and two longer (1.31 Å) C–O bond length. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra, corners with three CrO6 octahedra, and corners with four LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 46–64°. There are a spread of P–O bond distances ranging from 1.54–1.57 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one LiO6 octahedra, a cornercorner with one CrO6 octahedra, and corners with three LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 51–69°. There are a spread of P–O bond distances ranging from 1.52–1.58 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CrO6 octahedra, corners with two equivalent LiO6 octahedra, and corners with two LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 45–62°. There are a spread of P–O bond distances ranging from 1.54–1.59 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with three CrO6 octahedra and corners with three LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 46–50°. There is one shorter (1.55 Å) and three longer (1.56 Å) P–O bond length. There are twenty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+, one Cr2+, and one C4+ atom. In the second O2- site, O2- is bonded to two Li1+, one Cr2+, and one C4+ atom to form a mixture of edge and corner-sharing OLi2CrC tetrahedra. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+, one Cr2+, and one C4+ atom. In the fourth O2- site, O2- is bonded in a distorted rectangular see-saw-like geometry to one Li1+, two Cr2+, and one C4+ atom. In the fifth O2- site, O2- is bonded to three Li1+ and one C4+ atom to form a mixture of edge and corner-sharing OLi3C tetrahedra. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two Li1+, one Cr2+, and one C4+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Cr2+, and one P5+ atom. In the eighth O2- site, O2- is bonded to two Li1+, one Cr2+, and one P5+ atom to form distorted corner-sharing OLi2CrP trigonal pyramids. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Cr2+, and one P5+ atom. In the tenth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Cr2+, and one P5+ atom. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to one Li1+, two Cr2+, and one P5+ atom. In the twelfth O2- site, O2- is bonded to two Li1+, one Cr2+, and one P5+ atom to form distorted OLi2CrP tetrahedra that share corners with two OLi2CrP trigonal pyramids and an edgeedge with one OLi2CrC tetrahedra. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Cr2+, and one P5+ atom. In the fourteenth O2- site, O2- is bonded to two Li1+, one Cr2+, and one P5+ atom to form distorted OLi2CrP tetrahedra that share corners with two OLi2CrP trigonal pyramids and an edgeedge with one OLi3C tetrahedra. In the fifteenth O2- site, O2- is bonded to two Li1+, one Cr2+, and one P5+ atom to form distorted OLi2CrP tetrahedra that share corners with three OLi2CrP trigonal pyramids and an edgeedge with one OLi3C trigonal pyramid. In the sixteenth O2- site, O2- is bonded to two Li1+, one Cr2+, and one P5+ atom to form distorted OLi2CrP trigonal pyramids that share corners with four OLi2CrP tetrahedra and corners with three OLi3C trigonal pyramids. In the seventeenth O2- site, O2- is bonded to two Li1+, one Cr2+, and one P5+ atom to form distorted edge-sharing OLi2CrP tetrahedra. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Li1+ and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a 4-coordinate geometry to three Li1+ and one P5+ atom. In the twentieth O2- site, O2- is bonded in a 4-coordinate geometry to three Li1+ and one P5+ atom. In the twenty-first O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Cr2+, and one P5+ atom. In the twenty-second O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Cr2+, and one P5+ atom. In the twenty-third O2- site, O2- is bonded in a 1-coordinate geometry to four Li1+ and one C4+ atom. In the twenty-fourth O2- site, O2- is bonded to three Li1+ and one C4+ atom to form a mixture of distorted edge and corner-sharing OLi3C trigonal pyramids. In the twenty-fifth O2- site, O2- is bonded in a 1-coordinate geometry to two Li1+, one Cr2+, and one C4+ atom. In the twenty-sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Li1+ and one C4+ atom. In the twenty-seventh O2- site, O2- is bonded to three Li1+ and one C4+ atom to form edge-sharing OLi3C tetrahedra. In the twenty-eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+, one Cr2+, and one C4+ atom.