Li7Mn10O20 crystallizes in the triclinic P1 space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to one O(1), one O(17), one O(19), one O(2), one O(20), and one O(6) atom. In the second Li site, Li(2) is bonded to one O(10), one O(11), one O(14), one O(4), and one O(9) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(3)O5 trigonal bipyramid,  an edgeedge with one Mn(6)O6 octahedra, and  an edgeedge with one Mn(5)O5 square pyramid. The corner-sharing octahedral tilt angles are 37°. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one O(14), one O(3), one O(5), one O(7), and one O(8) atom. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one O(11), one O(14), one O(4), one O(5), and one O(8) atom. In the fifth Li site, Li(5) is bonded to one O(1), one O(12), one O(15), one O(16), one O(17), and one O(18) atom to form distorted LiO6 octahedra that share  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(5)O5 square pyramid,  a cornercorner with one Mn(9)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(8)O6 octahedra, and  an edgeedge with one Mn(9)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 50°. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(11), one O(16), one O(18), and one O(9) atom. In the seventh Li site, Li(7) is bonded in a 5-coordinate geometry to one O(1), one O(13), one O(15), one O(16), and one O(9) atom. There are ten inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(15), one O(17), one O(19), one O(2), one O(20), and one O(3) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mn(3)O5 trigonal bipyramid,  a cornercorner with one Mn(9)O5 trigonal bipyramid,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Mn(8)O6 octahedra, and  an edgeedge with one Mn(9)O5 trigonal bipyramid. In the second Mn site, Mn(2) is bonded in a 7-coordinate geometry to one O(19), one O(20), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. In the third Mn site, Mn(3) is bonded to one O(10), one O(3), one O(5), one O(6), and one O(7) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(5)O5 square pyramid, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-60°. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(19), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(12), one O(13), one O(8), and one O(9) atom to form MnO5 square pyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Mn(8)O6 octahedra,  a cornercorner with one Mn(3)O5 trigonal bipyramid, edges with two equivalent Mn(6)O6 octahedra, and  an edgeedge with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-48°. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(11), one O(12), one O(13), one O(14), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Mn(8)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, edges with two equivalent Mn(5)O5 square pyramids, and  an edgeedge with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-50°. In the seventh Mn site, Mn(7) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(16), one O(18), and one O(9) atom. In the eighth Mn site, Mn(8) is bonded to one O(1), one O(13), one O(15), one O(16), one O(18), and one O(2) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(5)O5 square pyramid,  a cornercorner with one Mn(9)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, and  an edgeedge with one Mn(9)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 47°. In the ninth Mn site, Mn(9) is bonded to one O(1), one O(17), one O(18), one O(2), and one O(20) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(8)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-66°. In the tenth Mn site, Mn(10) is bonded in a distorted rectangular see-saw-like geometry to one O(17), one O(19), one O(2), and one O(20) atom. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(5), one Li(7), one Mn(8), and one Mn(9) atom. In the second O site, O(2) is bonded to one Li(1), one Mn(1), one Mn(10), one Mn(8), and one Mn(9) atom to form OLiMn4 trigonal bipyramids that share  a cornercorner with one O(16)Li3Mn2 trigonal bipyramid, corners with two equivalent O(20)LiMn4 trigonal bipyramids,  a cornercorner with one O(13)LiMn3 trigonal pyramid,  a cornercorner with one O(19)LiMn4 trigonal pyramid,  an edgeedge with one O(20)LiMn4 trigonal bipyramid, and  an edgeedge with one O(19)LiMn4 trigonal pyramid. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(3), one Mn(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Li(2), one Li(4), one Mn(2), one Mn(4), and one O(7) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(3), one Li(4), one Mn(2), one Mn(3), and one Mn(4) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Li(3), one Mn(2), one Mn(3), and one O(4) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Li(3), one Li(4), one Mn(4), one Mn(5), and one Mn(6) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Li(2), one Li(6), one Li(7), one Mn(5), and one Mn(7) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(2), one Mn(3), one Mn(5), and one Mn(6) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Li(4), one Li(6), one Mn(6), and one Mn(7) atom to form distorted OLi3Mn2 square pyramids that share corners with two equivalent O(16)Li3Mn2 trigonal bipyramids,  a cornercorner with one O(13)LiMn3 trigonal pyramid, and corners with two equivalent O(12)LiMn3 trigonal pyramids. In the twelfth O site, O(12) is bonded to one Li(5), one Mn(5), one Mn(6), and one Mn(7) atom to form distorted OLiMn3 trigonal pyramids that share corners with two equivalent O(11)Li3Mn2 square pyramids, corners with two equivalent O(13)LiMn3 trigonal pyramids, and  an edgeedge with one O(16)Li3Mn2 trigonal bipyramid. In the thirteenth O site, O(13) is bonded to one Li(7), one Mn(5), one Mn(6), and one Mn(8) atom to form distorted OLiMn3 trigonal pyramids that share  a cornercorner with one O(11)Li3Mn2 square pyramid,  a cornercorner with one O(2)LiMn4 trigonal bipyramid, corners with two equivalent O(16)Li3Mn2 trigonal bipyramids, and corners with two equivalent O(12)LiMn3 trigonal pyramids. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one Li(4), one Mn(6), and one Mn(7) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Li(5), one Li(7), one Mn(1), and one Mn(8) atom. In the sixteenth O site, O(16) is bonded to one Li(5), one Li(6), one Li(7), one Mn(7), and one Mn(8) atom to form distorted OLi3Mn2 trigonal bipyramids that share corners with two equivalent O(11)Li3Mn2 square pyramids,  a cornercorner with one O(2)LiMn4 trigonal bipyramid, corners with two equivalent O(13)LiMn3 trigonal pyramids, and  an edgeedge with one O(12)LiMn3 trigonal pyramid. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Li(1), one Li(5), one Mn(1), one Mn(10), and one Mn(9) atom. In the eighteenth O site, O(18) is bonded in a 5-coordinate geometry to one Li(5), one Li(6), one Mn(7), one Mn(8), and one Mn(9) atom. In the nineteenth O site, O(19) is bonded to one Li(1), one Mn(1), one Mn(10), one Mn(2), and one Mn(4) atom to form a mixture of distorted corner and edge-sharing OLiMn4 trigonal pyramids. In the twentieth O site, O(20) is bonded to one Li(1), one Mn(1), one Mn(10), one Mn(2), and one Mn(9) atom to form a mixture of distorted corner and edge-sharing OLiMn4 trigonal bipyramids.
Li7Mn10O20 crystallizes in the triclinic P1 space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to one O(1), one O(17), one O(19), one O(2), one O(20), and one O(6) atom. The Li(1)-O(1) bond length is 2.07 Å. The Li(1)-O(17) bond length is 2.53 Å. The Li(1)-O(19) bond length is 2.09 Å. The Li(1)-O(2) bond length is 2.07 Å. The Li(1)-O(20) bond length is 2.11 Å. The Li(1)-O(6) bond length is 2.37 Å. In the second Li site, Li(2) is bonded to one O(10), one O(11), one O(14), one O(4), and one O(9) atom to form distorted LiO5 trigonal bipyramids that share  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(3)O5 trigonal bipyramid,  an edgeedge with one Mn(6)O6 octahedra, and  an edgeedge with one Mn(5)O5 square pyramid. The corner-sharing octahedral tilt angles are 37°. The Li(2)-O(10) bond length is 2.01 Å. The Li(2)-O(11) bond length is 2.06 Å. The Li(2)-O(14) bond length is 2.04 Å. The Li(2)-O(4) bond length is 2.28 Å. The Li(2)-O(9) bond length is 2.03 Å. In the third Li site, Li(3) is bonded in a 5-coordinate geometry to one O(14), one O(3), one O(5), one O(7), and one O(8) atom. The Li(3)-O(14) bond length is 2.31 Å. The Li(3)-O(3) bond length is 2.40 Å. The Li(3)-O(5) bond length is 2.17 Å. The Li(3)-O(7) bond length is 1.96 Å. The Li(3)-O(8) bond length is 1.88 Å. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one O(11), one O(14), one O(4), one O(5), and one O(8) atom. The Li(4)-O(11) bond length is 1.96 Å. The Li(4)-O(14) bond length is 2.03 Å. The Li(4)-O(4) bond length is 2.27 Å. The Li(4)-O(5) bond length is 2.03 Å. The Li(4)-O(8) bond length is 2.07 Å. In the fifth Li site, Li(5) is bonded to one O(1), one O(12), one O(15), one O(16), one O(17), and one O(18) atom to form distorted LiO6 octahedra that share  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(5)O5 square pyramid,  a cornercorner with one Mn(9)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Mn(8)O6 octahedra, and  an edgeedge with one Mn(9)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 50°. The Li(5)-O(1) bond length is 2.03 Å. The Li(5)-O(12) bond length is 2.31 Å. The Li(5)-O(15) bond length is 1.95 Å. The Li(5)-O(16) bond length is 2.04 Å. The Li(5)-O(17) bond length is 2.47 Å. The Li(5)-O(18) bond length is 2.21 Å. In the sixth Li site, Li(6) is bonded in a 4-coordinate geometry to one O(11), one O(16), one O(18), and one O(9) atom. The Li(6)-O(11) bond length is 1.93 Å. The Li(6)-O(16) bond length is 2.29 Å. The Li(6)-O(18) bond length is 1.88 Å. The Li(6)-O(9) bond length is 1.91 Å. In the seventh Li site, Li(7) is bonded in a 5-coordinate geometry to one O(1), one O(13), one O(15), one O(16), and one O(9) atom. The Li(7)-O(1) bond length is 2.46 Å. The Li(7)-O(13) bond length is 2.38 Å. The Li(7)-O(15) bond length is 1.92 Å. The Li(7)-O(16) bond length is 1.98 Å. The Li(7)-O(9) bond length is 2.43 Å. There are ten inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(15), one O(17), one O(19), one O(2), one O(20), and one O(3) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mn(3)O5 trigonal bipyramid,  a cornercorner with one Mn(9)O5 trigonal bipyramid,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Mn(8)O6 octahedra, and  an edgeedge with one Mn(9)O5 trigonal bipyramid. The Mn(1)-O(15) bond length is 2.03 Å. The Mn(1)-O(17) bond length is 1.97 Å. The Mn(1)-O(19) bond length is 1.99 Å. The Mn(1)-O(2) bond length is 2.23 Å. The Mn(1)-O(20) bond length is 2.34 Å. The Mn(1)-O(3) bond length is 2.05 Å. In the second Mn site, Mn(2) is bonded in a 7-coordinate geometry to one O(19), one O(20), one O(3), one O(4), one O(5), one O(6), and one O(7) atom. The Mn(2)-O(19) bond length is 2.73 Å. The Mn(2)-O(20) bond length is 1.98 Å. The Mn(2)-O(3) bond length is 2.72 Å. The Mn(2)-O(4) bond length is 2.33 Å. The Mn(2)-O(5) bond length is 2.05 Å. The Mn(2)-O(6) bond length is 2.11 Å. The Mn(2)-O(7) bond length is 2.18 Å. In the third Mn site, Mn(3) is bonded to one O(10), one O(3), one O(5), one O(6), and one O(7) atom to form MnO5 trigonal bipyramids that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(5)O5 square pyramid, and  a cornercorner with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 58-60°. The Mn(3)-O(10) bond length is 2.15 Å. The Mn(3)-O(3) bond length is 2.08 Å. The Mn(3)-O(5) bond length is 2.00 Å. The Mn(3)-O(6) bond length is 1.92 Å. The Mn(3)-O(7) bond length is 2.08 Å. In the fourth Mn site, Mn(4) is bonded in a 6-coordinate geometry to one O(19), one O(3), one O(4), one O(5), one O(6), and one O(8) atom. The Mn(4)-O(19) bond length is 2.14 Å. The Mn(4)-O(3) bond length is 2.00 Å. The Mn(4)-O(4) bond length is 1.98 Å. The Mn(4)-O(5) bond length is 2.16 Å. The Mn(4)-O(6) bond length is 1.94 Å. The Mn(4)-O(8) bond length is 2.40 Å. In the fifth Mn site, Mn(5) is bonded to one O(10), one O(12), one O(13), one O(8), and one O(9) atom to form MnO5 square pyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Mn(8)O6 octahedra,  a cornercorner with one Mn(3)O5 trigonal bipyramid, edges with two equivalent Mn(6)O6 octahedra, and  an edgeedge with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-48°. The Mn(5)-O(10) bond length is 1.94 Å. The Mn(5)-O(12) bond length is 1.90 Å. The Mn(5)-O(13) bond length is 1.89 Å. The Mn(5)-O(8) bond length is 1.96 Å. The Mn(5)-O(9) bond length is 1.82 Å. In the sixth Mn site, Mn(6) is bonded to one O(10), one O(11), one O(12), one O(13), one O(14), and one O(8) atom to form MnO6 octahedra that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Mn(8)O6 octahedra,  a cornercorner with one Li(2)O5 trigonal bipyramid,  a cornercorner with one Mn(3)O5 trigonal bipyramid, edges with two equivalent Mn(5)O5 square pyramids, and  an edgeedge with one Li(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 47-50°. The Mn(6)-O(10) bond length is 1.98 Å. The Mn(6)-O(11) bond length is 2.17 Å. The Mn(6)-O(12) bond length is 2.01 Å. The Mn(6)-O(13) bond length is 1.97 Å. The Mn(6)-O(14) bond length is 1.84 Å. The Mn(6)-O(8) bond length is 1.95 Å. In the seventh Mn site, Mn(7) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(16), one O(18), and one O(9) atom. The Mn(7)-O(11) bond length is 1.97 Å. The Mn(7)-O(12) bond length is 2.01 Å. The Mn(7)-O(14) bond length is 2.33 Å. The Mn(7)-O(16) bond length is 1.92 Å. The Mn(7)-O(18) bond length is 2.49 Å. The Mn(7)-O(9) bond length is 1.94 Å. In the eighth Mn site, Mn(8) is bonded to one O(1), one O(13), one O(15), one O(16), one O(18), and one O(2) atom to form distorted MnO6 octahedra that share  a cornercorner with one Mn(6)O6 octahedra,  a cornercorner with one Mn(5)O5 square pyramid,  a cornercorner with one Mn(9)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O6 octahedra, edges with two equivalent Li(5)O6 octahedra, and  an edgeedge with one Mn(9)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 47°. The Mn(8)-O(1) bond length is 1.95 Å. The Mn(8)-O(13) bond length is 2.21 Å. The Mn(8)-O(15) bond length is 1.97 Å. The Mn(8)-O(16) bond length is 1.97 Å. The Mn(8)-O(18) bond length is 2.00 Å. The Mn(8)-O(2) bond length is 2.20 Å. In the ninth Mn site, Mn(9) is bonded to one O(1), one O(17), one O(18), one O(2), and one O(20) atom to form distorted MnO5 trigonal bipyramids that share  a cornercorner with one Li(5)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(8)O6 octahedra,  an edgeedge with one Li(5)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-66°. The Mn(9)-O(1) bond length is 1.89 Å. The Mn(9)-O(17) bond length is 2.25 Å. The Mn(9)-O(18) bond length is 1.91 Å. The Mn(9)-O(2) bond length is 2.04 Å. The Mn(9)-O(20) bond length is 2.03 Å. In the tenth Mn site, Mn(10) is bonded in a distorted rectangular see-saw-like geometry to one O(17), one O(19), one O(2), and one O(20) atom. The Mn(10)-O(17) bond length is 1.93 Å. The Mn(10)-O(19) bond length is 1.92 Å. The Mn(10)-O(2) bond length is 1.94 Å. The Mn(10)-O(20) bond length is 2.02 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Li(1), one Li(5), one Li(7), one Mn(8), and one Mn(9) atom. In the second O site, O(2) is bonded to one Li(1), one Mn(1), one Mn(10), one Mn(8), and one Mn(9) atom to form OLiMn4 trigonal bipyramids that share  a cornercorner with one O(16)Li3Mn2 trigonal bipyramid, corners with two equivalent O(20)LiMn4 trigonal bipyramids,  a cornercorner with one O(13)LiMn3 trigonal pyramid,  a cornercorner with one O(19)LiMn4 trigonal pyramid,  an edgeedge with one O(20)LiMn4 trigonal bipyramid, and  an edgeedge with one O(19)LiMn4 trigonal pyramid. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Li(3), one Mn(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a 5-coordinate geometry to one Li(2), one Li(4), one Mn(2), one Mn(4), and one O(7) atom. The O(4)-O(7) bond length is 1.48 Å. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Li(3), one Li(4), one Mn(2), one Mn(3), and one Mn(4) atom. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one Li(1), one Mn(2), one Mn(3), and one Mn(4) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Li(3), one Mn(2), one Mn(3), and one O(4) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Li(3), one Li(4), one Mn(4), one Mn(5), and one Mn(6) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Li(2), one Li(6), one Li(7), one Mn(5), and one Mn(7) atom. In the tenth O site, O(10) is bonded in a rectangular see-saw-like geometry to one Li(2), one Mn(3), one Mn(5), and one Mn(6) atom. In the eleventh O site, O(11) is bonded to one Li(2), one Li(4), one Li(6), one Mn(6), and one Mn(7) atom to form distorted OLi3Mn2 square pyramids that share corners with two equivalent O(16)Li3Mn2 trigonal bipyramids,  a cornercorner with one O(13)LiMn3 trigonal pyramid, and corners with two equivalent O(12)LiMn3 trigonal pyramids. In the twelfth O site, O(12) is bonded to one Li(5), one Mn(5), one Mn(6), and one Mn(7) atom to form distorted OLiMn3 trigonal pyramids that share corners with two equivalent O(11)Li3Mn2 square pyramids, corners with two equivalent O(13)LiMn3 trigonal pyramids, and  an edgeedge with one O(16)Li3Mn2 trigonal bipyramid. In the thirteenth O site, O(13) is bonded to one Li(7), one Mn(5), one Mn(6), and one Mn(8) atom to form distorted OLiMn3 trigonal pyramids that share  a cornercorner with one O(11)Li3Mn2 square pyramid,  a cornercorner with one O(2)LiMn4 trigonal bipyramid, corners with two equivalent O(16)Li3Mn2 trigonal bipyramids, and corners with two equivalent O(12)LiMn3 trigonal pyramids. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Li(2), one Li(3), one Li(4), one Mn(6), and one Mn(7) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Li(5), one Li(7), one Mn(1), and one Mn(8) atom. In the sixteenth O site, O(16) is bonded to one Li(5), one Li(6), one Li(7), one Mn(7), and one Mn(8) atom to form distorted OLi3Mn2 trigonal bipyramids that share corners with two equivalent O(11)Li3Mn2 square pyramids,  a cornercorner with one O(2)LiMn4 trigonal bipyramid, corners with two equivalent O(13)LiMn3 trigonal pyramids, and  an edgeedge with one O(12)LiMn3 trigonal pyramid. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Li(1), one Li(5), one Mn(1), one Mn(10), and one Mn(9) atom. In the eighteenth O site, O(18) is bonded in a 5-coordinate geometry to one Li(5), one Li(6), one Mn(7), one Mn(8), and one Mn(9) atom. In the nineteenth O site, O(19) is bonded to one Li(1), one Mn(1), one Mn(10), one Mn(2), and one Mn(4) atom to form a mixture of distorted corner and edge-sharing OLiMn4 trigonal pyramids. In the twentieth O site, O(20) is bonded to one Li(1), one Mn(1), one Mn(10), one Mn(2), and one Mn(9) atom to form a mixture of distorted corner and edge-sharing OLiMn4 trigonal bipyramids.