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Li12Mn3CoP4(CO7)4 crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are eight 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 1.95–2.51 Å. In the second 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 1.94–2.59 Å. In the third Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share corners with two MnO6 octahedra, corners with three PO4 tetrahedra, an edgeedge with one MnO6 octahedra, and edges with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 67–90°. There are a spread of Li–O bond distances ranging from 2.05–2.45 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 MnO6 octahedra, a cornercorner with one CoO6 octahedra, corners with three PO4 tetrahedra, an edgeedge with one MnO6 octahedra, and edges with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 66–90°. There are a spread of Li–O bond distances ranging from 2.08–2.45 Å. In the fifth Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share corners with two MnO6 octahedra, corners with three PO4 tetrahedra, an edgeedge with one CoO6 octahedra, and edges with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 66–90°. There are a spread of Li–O bond distances ranging from 2.06–2.45 Å. In the sixth Li1+ site, Li1+ is bonded to five O2- atoms to form distorted LiO5 trigonal bipyramids that share a cornercorner with one MnO6 octahedra, a cornercorner with one CoO6 octahedra, corners with three PO4 tetrahedra, an edgeedge with one MnO6 octahedra, and edges with two equivalent LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 66–87°. There are a spread of Li–O bond distances ranging from 2.06–2.43 Å. In the seventh 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 1.94–2.52 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 1.93–2.51 Å. There are three inequivalent Mn2+ sites. In the first Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with four PO4 tetrahedra, corners with four LiO5 trigonal bipyramids, and edges with two equivalent LiO5 trigonal bipyramids. There are a spread of Mn–O bond distances ranging from 2.11–2.40 Å. In the second Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with four PO4 tetrahedra, corners with four LiO5 trigonal bipyramids, and edges with two equivalent LiO5 trigonal bipyramids. There are a spread of Mn–O bond distances ranging from 2.11–2.40 Å. In the third Mn2+ site, Mn2+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with four PO4 tetrahedra, corners with four LiO5 trigonal bipyramids, and edges with two equivalent LiO5 trigonal bipyramids. There are a spread of Mn–O bond distances ranging from 2.11–2.40 Å. Co2+ is bonded to six O2- atoms to form CoO6 octahedra that share corners with four PO4 tetrahedra, corners with four LiO5 trigonal bipyramids, and edges with two equivalent LiO5 trigonal bipyramids. There are a spread of Co–O bond distances ranging from 2.08–2.29 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 1.29–1.31 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 are a spread of C–O bond distances ranging from 1.29–1.31 Å. In the fourth C4+ site, C4+ is bonded in a trigonal planar geometry to three O2- atoms. All C–O bond lengths are 1.30 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 a cornercorner with one CoO6 octahedra, corners with three MnO6 octahedra, and corners with six LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 48–64°. There is three shorter (1.55 Å) and one 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 a cornercorner with one CoO6 octahedra, corners with three MnO6 octahedra, and corners with six LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 48–62°. There are a spread of P–O bond distances ranging from 1.55–1.57 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with four MnO6 octahedra and corners with six LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 48–65°. There is three shorter (1.55 Å) and one longer (1.57 Å) P–O bond length. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two MnO6 octahedra, corners with two equivalent CoO6 octahedra, and corners with six LiO5 trigonal bipyramids. The corner-sharing octahedra tilt angles range from 45–65°. There is one shorter (1.55 Å) and three longer (1.56 Å) P–O bond length. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+, one Mn2+, and one C4+ atom. In the second O2- site, O2- is bonded to three Li1+ and one C4+ atom to form edge-sharing OLi3C tetrahedra. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+, one Mn2+, and one C4+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to three Li1+, one Mn2+, and one C4+ atom. In the fifth O2- site, O2- is bonded to three Li1+ and one C4+ atom to form edge-sharing OLi3C tetrahedra. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Li1+, one Mn2+, and one C4+ atom. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Mn2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Mn2+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Li1+, one Mn2+, and one P5+ atom. In the tenth O2- site, O2- is bonded to two equivalent Li1+, one Mn2+, and one P5+ atom to form OLi2MnP tetrahedra that share a cornercorner with one OLi2MnP trigonal pyramid and an edgeedge with one OLi3C tetrahedra. In the eleventh O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Li1+, one Mn2+, and one P5+ atom. In the twelfth O2- site, O2- is bonded to two equivalent Li1+, one Co2+, and one P5+ atom to form distorted OLi2CoP tetrahedra that share a cornercorner with one OLi2MnP trigonal pyramid and an edgeedge with one OLi3C tetrahedra. In the thirteenth O2- site, O2- is bonded to two equivalent Li1+, one Mn2+, and one P5+ atom to form edge-sharing OLi2MnP tetrahedra. In the fourteenth O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent Li1+, one Co2+, and one P5+ atom. In the fifteenth O2- site, O2- is bonded to two equivalent Li1+, one Mn2+, and one P5+ atom to form OLi2MnP tetrahedra that share corners with two equivalent OLi2MnP trigonal pyramids and an edgeedge with one OLi3C tetrahedra. In the sixteenth O2- site, O2- is bonded to two equivalent Li1+, one Mn2+, and one P5+ atom to form distorted corner-sharing OLi2MnP trigonal pyramids. In the seventeenth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Mn2+, and one P5+ atom. In the eighteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Li1+, one Co2+, and one P5+ atom. In the nineteenth O2- site, O2- is bonded in a 1-coordinate geometry to three Li1+, one Mn2+, and one C4+ atom. In the twentieth O2- site, O2- is bonded to three Li1+ and one C4+ atom to form edge-sharing OLi3C tetrahedra. In the twenty-first O2- site, O2- is bonded in a 1-coordinate geometry to three Li1+, one Co2+, and one C4+ atom. In the twenty-second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Li1+, one Mn2+, and one C4+ atom. In the twenty-third O2- site, O2- is bonded to three Li1+ and one C4+ atom to form a mixture of corner and edge-sharing OLi3C tetrahedra. In the twenty-fourth O2- site, O2- is bonded in a 2-coordinate geometry to one Li1+, one Co2+, and one C4+ atom.

36 MATERIALS SCIENCE↗