Li5Mn7O15 crystallizes in the monoclinic Cm space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(8), and two equivalent O(2) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(5)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra, corners with two equivalent Li(2)O5 square pyramids, and corners with four equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 55-61°. In the second Li site, Li(2) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form distorted LiO5 square pyramids that share corners with two equivalent Mn(2)O5 square pyramids,  a cornercorner with one Li(5)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, and edges with two equivalent Mn(2)O5 square pyramids. In the third Li site, Li(3) is bonded in a trigonal planar geometry to one O(6) and two equivalent O(7) atoms. In the fourth Li site, Li(4) is bonded to one O(10), one O(5), and two equivalent O(3) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(5)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra, corners with two equivalent Li(2)O5 square pyramids, and corners with four equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 51-61°. In the fifth Li site, Li(5) is bonded to one O(11), one O(4), and two equivalent O(9) atoms to form LiO4 tetrahedra that share corners with two equivalent Mn(5)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra, corners with four equivalent Mn(4)O6 octahedra,  a cornercorner with one Li(2)O5 square pyramid, and corners with two equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 58-63°. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(11), two equivalent O(2), and two equivalent O(9) atoms to form MnO6 octahedra that share corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(5)O4 tetrahedra,  an edgeedge with one Mn(5)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra,  an edgeedge with one Li(2)O5 square pyramid, and edges with two equivalent Mn(2)O5 square pyramids. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form MnO5 square pyramids that share  a cornercorner with one Li(2)O5 square pyramid,  a cornercorner with one Mn(2)O5 square pyramid,  a cornercorner with one Li(5)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra,  an edgeedge with one Li(2)O5 square pyramid, and  an edgeedge with one Mn(2)O5 square pyramid. In the third Mn site, Mn(3) is bonded to one O(5), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form MnO6 octahedra that share corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(5)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra,  an edgeedge with one Li(2)O5 square pyramid, and edges with two equivalent Mn(2)O5 square pyramids. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(11), one O(6), one O(7), one O(8), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra, and edges with two equivalent Mn(5)O6 octahedra. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(8), two equivalent O(7), and two equivalent O(9) atoms to form MnO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, and edges with four equivalent Mn(4)O6 octahedra. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Mn(1), and two equivalent Mn(2) atoms to form OLiMn3 trigonal pyramids that share  a cornercorner with one O(11)LiMn3 tetrahedra, corners with two equivalent O(2)Li2Mn2 tetrahedra, corners with two equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(8)LiMn3 trigonal pyramid, and edges with two equivalent O(2)Li2Mn2 tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mn(1), and one Mn(2) atom to form OLi2Mn2 tetrahedra that share  a cornercorner with one O(2)Li2Mn2 tetrahedra,  a cornercorner with one O(11)LiMn3 tetrahedra, corners with two equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid,  a cornercorner with one O(8)LiMn3 trigonal pyramid,  an edgeedge with one O(2)Li2Mn2 tetrahedra, and  an edgeedge with one O(1)LiMn3 trigonal pyramid. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(4), one Mn(2), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(5), and two equivalent Mn(2) atoms. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Mn(3), and two equivalent Mn(2) atoms. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(3), and two equivalent Mn(4) atoms. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Mn(3), one Mn(4), and one Mn(5) atom. In the eighth O site, O(8) is bonded to one Li(1), one Mn(5), and two equivalent Mn(4) atoms to form distorted OLiMn3 trigonal pyramids that share corners with two equivalent O(2)Li2Mn2 tetrahedra, corners with two equivalent O(11)LiMn3 tetrahedra, corners with four equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid, and corners with three equivalent O(10)LiMn3 trigonal pyramids. In the ninth O site, O(9) is bonded to one Li(5), one Mn(1), one Mn(4), and one Mn(5) atom to form distorted OLiMn3 tetrahedra that share  a cornercorner with one O(11)LiMn3 tetrahedra,  a cornercorner with one O(9)LiMn3 tetrahedra, corners with two equivalent O(2)Li2Mn2 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid, corners with two equivalent O(8)LiMn3 trigonal pyramids,  an edgeedge with one O(11)LiMn3 tetrahedra,  an edgeedge with one O(9)LiMn3 tetrahedra, and  an edgeedge with one O(10)LiMn3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(4), one Mn(5), and two equivalent Mn(4) atoms to form a mixture of distorted corner and edge-sharing OLiMn3 trigonal pyramids. In the eleventh O site, O(11) is bonded to one Li(5), one Mn(1), and two equivalent Mn(4) atoms to form distorted OLiMn3 tetrahedra that share corners with two equivalent O(2)Li2Mn2 tetrahedra, corners with two equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid, corners with two equivalent O(8)LiMn3 trigonal pyramids, edges with two equivalent O(9)LiMn3 tetrahedra, and  an edgeedge with one O(10)LiMn3 trigonal pyramid.
Li5Mn7O15 crystallizes in the monoclinic Cm space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(8), and two equivalent O(2) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(5)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra, corners with two equivalent Li(2)O5 square pyramids, and corners with four equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 55-61°. The Li(1)-O(1) bond length is 2.06 Å. The Li(1)-O(8) bond length is 1.98 Å. Both Li(1)-O(2) bond lengths are 2.03 Å. In the second Li site, Li(2) is bonded to one O(4), two equivalent O(2), and two equivalent O(3) atoms to form distorted LiO5 square pyramids that share corners with two equivalent Mn(2)O5 square pyramids,  a cornercorner with one Li(5)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, and edges with two equivalent Mn(2)O5 square pyramids. The Li(2)-O(4) bond length is 1.89 Å. Both Li(2)-O(2) bond lengths are 2.03 Å. Both Li(2)-O(3) bond lengths are 2.18 Å. In the third Li site, Li(3) is bonded in a trigonal planar geometry to one O(6) and two equivalent O(7) atoms. The Li(3)-O(6) bond length is 1.90 Å. Both Li(3)-O(7) bond lengths are 1.96 Å. In the fourth Li site, Li(4) is bonded to one O(10), one O(5), and two equivalent O(3) atoms to form LiO4 tetrahedra that share  a cornercorner with one Mn(5)O6 octahedra, corners with two equivalent Mn(4)O6 octahedra, corners with three equivalent Mn(3)O6 octahedra, corners with two equivalent Li(2)O5 square pyramids, and corners with four equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 51-61°. The Li(4)-O(10) bond length is 1.97 Å. The Li(4)-O(5) bond length is 2.01 Å. Both Li(4)-O(3) bond lengths are 1.98 Å. In the fifth Li site, Li(5) is bonded to one O(11), one O(4), and two equivalent O(9) atoms to form LiO4 tetrahedra that share corners with two equivalent Mn(5)O6 octahedra, corners with three equivalent Mn(1)O6 octahedra, corners with four equivalent Mn(4)O6 octahedra,  a cornercorner with one Li(2)O5 square pyramid, and corners with two equivalent Mn(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 58-63°. The Li(5)-O(11) bond length is 1.96 Å. The Li(5)-O(4) bond length is 1.84 Å. Both Li(5)-O(9) bond lengths are 2.04 Å. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(11), two equivalent O(2), and two equivalent O(9) atoms to form MnO6 octahedra that share corners with three equivalent Li(1)O4 tetrahedra, corners with three equivalent Li(5)O4 tetrahedra,  an edgeedge with one Mn(5)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra,  an edgeedge with one Li(2)O5 square pyramid, and edges with two equivalent Mn(2)O5 square pyramids. The Mn(1)-O(1) bond length is 1.98 Å. The Mn(1)-O(11) bond length is 1.93 Å. Both Mn(1)-O(2) bond lengths are 1.89 Å. Both Mn(1)-O(9) bond lengths are 2.05 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form MnO5 square pyramids that share  a cornercorner with one Li(2)O5 square pyramid,  a cornercorner with one Mn(2)O5 square pyramid,  a cornercorner with one Li(5)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra, corners with two equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra,  an edgeedge with one Li(2)O5 square pyramid, and  an edgeedge with one Mn(2)O5 square pyramid. The Mn(2)-O(1) bond length is 1.95 Å. The Mn(2)-O(2) bond length is 1.90 Å. The Mn(2)-O(3) bond length is 1.92 Å. The Mn(2)-O(4) bond length is 1.95 Å. The Mn(2)-O(5) bond length is 2.04 Å. In the third Mn site, Mn(3) is bonded to one O(5), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form MnO6 octahedra that share corners with three equivalent Li(4)O4 tetrahedra,  an edgeedge with one Mn(5)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra,  an edgeedge with one Li(2)O5 square pyramid, and edges with two equivalent Mn(2)O5 square pyramids. The Mn(3)-O(5) bond length is 1.94 Å. The Mn(3)-O(6) bond length is 1.94 Å. Both Mn(3)-O(3) bond lengths are 1.89 Å. Both Mn(3)-O(7) bond lengths are 2.05 Å. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(11), one O(6), one O(7), one O(8), and one O(9) atom to form MnO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, edges with two equivalent Mn(4)O6 octahedra, and edges with two equivalent Mn(5)O6 octahedra. The Mn(4)-O(10) bond length is 2.05 Å. The Mn(4)-O(11) bond length is 2.05 Å. The Mn(4)-O(6) bond length is 2.04 Å. The Mn(4)-O(7) bond length is 1.96 Å. The Mn(4)-O(8) bond length is 2.03 Å. The Mn(4)-O(9) bond length is 1.95 Å. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(8), two equivalent O(7), and two equivalent O(9) atoms to form MnO6 octahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(4)O4 tetrahedra, corners with two equivalent Li(5)O4 tetrahedra,  an edgeedge with one Mn(1)O6 octahedra,  an edgeedge with one Mn(3)O6 octahedra, and edges with four equivalent Mn(4)O6 octahedra. The Mn(5)-O(10) bond length is 1.93 Å. The Mn(5)-O(8) bond length is 1.94 Å. Both Mn(5)-O(7) bond lengths are 1.98 Å. Both Mn(5)-O(9) bond lengths are 1.97 Å. There are eleven inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Mn(1), and two equivalent Mn(2) atoms to form OLiMn3 trigonal pyramids that share  a cornercorner with one O(11)LiMn3 tetrahedra, corners with two equivalent O(2)Li2Mn2 tetrahedra, corners with two equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(8)LiMn3 trigonal pyramid, and edges with two equivalent O(2)Li2Mn2 tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mn(1), and one Mn(2) atom to form OLi2Mn2 tetrahedra that share  a cornercorner with one O(2)Li2Mn2 tetrahedra,  a cornercorner with one O(11)LiMn3 tetrahedra, corners with two equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid,  a cornercorner with one O(8)LiMn3 trigonal pyramid,  an edgeedge with one O(2)Li2Mn2 tetrahedra, and  an edgeedge with one O(1)LiMn3 trigonal pyramid. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(4), one Mn(2), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one Li(2), one Li(5), and two equivalent Mn(2) atoms. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Li(4), one Mn(3), and two equivalent Mn(2) atoms. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Li(3), one Mn(3), and two equivalent Mn(4) atoms. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Li(3), one Mn(3), one Mn(4), and one Mn(5) atom. In the eighth O site, O(8) is bonded to one Li(1), one Mn(5), and two equivalent Mn(4) atoms to form distorted OLiMn3 trigonal pyramids that share corners with two equivalent O(2)Li2Mn2 tetrahedra, corners with two equivalent O(11)LiMn3 tetrahedra, corners with four equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid, and corners with three equivalent O(10)LiMn3 trigonal pyramids. In the ninth O site, O(9) is bonded to one Li(5), one Mn(1), one Mn(4), and one Mn(5) atom to form distorted OLiMn3 tetrahedra that share  a cornercorner with one O(11)LiMn3 tetrahedra,  a cornercorner with one O(9)LiMn3 tetrahedra, corners with two equivalent O(2)Li2Mn2 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid, corners with two equivalent O(8)LiMn3 trigonal pyramids,  an edgeedge with one O(11)LiMn3 tetrahedra,  an edgeedge with one O(9)LiMn3 tetrahedra, and  an edgeedge with one O(10)LiMn3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Li(4), one Mn(5), and two equivalent Mn(4) atoms to form a mixture of distorted corner and edge-sharing OLiMn3 trigonal pyramids. In the eleventh O site, O(11) is bonded to one Li(5), one Mn(1), and two equivalent Mn(4) atoms to form distorted OLiMn3 tetrahedra that share corners with two equivalent O(2)Li2Mn2 tetrahedra, corners with two equivalent O(9)LiMn3 tetrahedra,  a cornercorner with one O(1)LiMn3 trigonal pyramid, corners with two equivalent O(8)LiMn3 trigonal pyramids, edges with two equivalent O(9)LiMn3 tetrahedra, and  an edgeedge with one O(10)LiMn3 trigonal pyramid.