K4Li5(FeO4)2 crystallizes in the triclinic P1 space group. There are eight inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one O(14), one O(2), one O(6), and two equivalent O(11) atoms. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(16), one O(3), one O(4), and two equivalent O(12) atoms. In the third K site, K(3) is bonded in a 5-coordinate geometry to one O(13), one O(4), one O(5), one O(7), and one O(9) atom. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(6), one O(8), and two equivalent O(15) atoms. In the fifth K site, K(5) is bonded in a 5-coordinate geometry to one O(16), one O(7), one O(9), and two equivalent O(2) atoms. In the sixth K site, K(6) is bonded in a 3-coordinate geometry to one O(12), one O(4), and one O(8) atom. In the seventh K site, K(7) is bonded in a 4-coordinate geometry to one O(1), one O(14), and two equivalent O(5) atoms. In the eighth K site, K(8) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(15), one O(16), one O(3), and two equivalent O(6) atoms. There are ten inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(13), one O(14), one O(2), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(8)O4 tetrahedra,  a cornercorner with one Fe(2)O4 tetrahedra,  a cornercorner with one Fe(3)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Fe(2)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(8), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Fe(4)O4 tetrahedra,  an edgeedge with one Fe(3)O4 tetrahedra,  an edgeedge with one Li(4)O4 trigonal pyramid, and  an edgeedge with one Li(7)O4 trigonal pyramid. In the third Li site, Li(3) is bonded to one O(14), one O(3), one O(5), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(9)O4 tetrahedra, corners with two equivalent Fe(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(6)O4 tetrahedra,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Fe(1)O4 tetrahedra. In the fourth Li site, Li(4) is bonded to one O(1), one O(11), one O(5), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(4)O4 tetrahedra,  a cornercorner with one Li(7)O4 trigonal pyramid,  an edgeedge with one Li(6)O4 tetrahedra,  an edgeedge with one Fe(4)O4 tetrahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. In the fifth Li site, Li(5) is bonded in a distorted trigonal planar geometry to one O(12), one O(3), and one O(6) atom. In the sixth Li site, Li(6) is bonded to one O(11), one O(14), one O(5), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra,  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Fe(2)O4 tetrahedra, and  an edgeedge with one Li(4)O4 trigonal pyramid. In the seventh Li site, Li(7) is bonded to one O(15), one O(16), one O(8), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(9)O4 tetrahedra, corners with two equivalent Fe(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Fe(4)O4 tetrahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. In the eighth Li site, Li(8) is bonded to one O(10), one O(12), one O(14), and one O(3) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra, corners with two equivalent Fe(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Li(9)O4 tetrahedra, and  an edgeedge with one Fe(2)O4 tetrahedra. In the ninth Li site, Li(9) is bonded to one O(10), one O(15), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(4)O4 tetrahedra,  a cornercorner with one Li(7)O4 trigonal pyramid,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Fe(1)O4 tetrahedra. In the tenth Li site, Li(10) is bonded in a bent 150 degrees geometry to one O(13) and one O(4) atom. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(3), one O(4), and one O(5) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(9)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(9)O4 tetrahedra. In the second Fe site, Fe(2) is bonded to one O(12), one O(13), one O(14), and one O(7) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(6)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. In the third Fe site, Fe(3) is bonded to one O(16), one O(2), one O(6), and one O(8) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(7)O4 trigonal pyramids, and  an edgeedge with one Li(2)O4 trigonal pyramid. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(15), and one O(9) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(9)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid, corners with two equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Li(4)O4 trigonal pyramid, and  an edgeedge with one Li(7)O4 trigonal pyramid. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), one K(4), one K(7), one Li(2), one Li(4), and one Fe(4) atom. In the second O site, O(2) is bonded to one K(1), two equivalent K(5), one Li(1), one Li(2), and one Fe(3) atom to form distorted corner-sharing OK3Li2Fe octahedra. The corner-sharing octahedral tilt angles are 11°. In the third O site, O(3) is bonded in a 5-coordinate geometry to one K(2), one K(8), one Li(3), one Li(5), one Li(8), one Li(9), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(2), one K(3), one K(6), one Li(10), one Li(9), and one Fe(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one K(3), two equivalent K(7), one Li(3), one Li(4), one Li(6), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one K(1), one K(4), two equivalent K(8), one Li(5), and one Fe(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one K(3), one K(5), one Li(1), one Li(3), one Li(6), and one Fe(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one K(4), one K(6), one Li(2), one Li(7), and one Fe(3) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one K(3), one K(5), one Li(2), one Li(4), one Li(7), and one Fe(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one K(4), one Li(8), one Li(9), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one K(8), two equivalent K(1), one Li(4), one Li(6), and one Fe(4) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one K(6), one K(8), two equivalent K(2), one Li(5), one Li(8), and one Fe(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one K(3), one Li(1), one Li(10), and one Fe(2) atom. In the fourteenth O site, O(14) is bonded in a 7-coordinate geometry to one K(1), one K(7), one Li(1), one Li(3), one Li(6), one Li(8), and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one K(8), two equivalent K(4), one Li(7), one Li(9), and one Fe(4) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one K(2), one K(5), one K(8), one Li(7), and one Fe(3) atom.
K4Li5(FeO4)2 crystallizes in the triclinic P1 space group. There are eight inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one O(14), one O(2), one O(6), and two equivalent O(11) atoms. The K(1)-O(1) bond length is 2.61 Å. The K(1)-O(14) bond length is 2.96 Å. The K(1)-O(2) bond length is 2.61 Å. The K(1)-O(6) bond length is 2.69 Å. There is one shorter (2.94 Å) and one longer (2.97 Å) K(1)-O(11) bond length. In the second K site, K(2) is bonded in a 5-coordinate geometry to one O(16), one O(3), one O(4), and two equivalent O(12) atoms. The K(2)-O(16) bond length is 2.73 Å. The K(2)-O(3) bond length is 2.83 Å. The K(2)-O(4) bond length is 3.13 Å. There is one shorter (2.86 Å) and one longer (3.00 Å) K(2)-O(12) bond length. In the third K site, K(3) is bonded in a 5-coordinate geometry to one O(13), one O(4), one O(5), one O(7), and one O(9) atom. The K(3)-O(13) bond length is 2.74 Å. The K(3)-O(4) bond length is 2.97 Å. The K(3)-O(5) bond length is 2.86 Å. The K(3)-O(7) bond length is 2.79 Å. The K(3)-O(9) bond length is 2.70 Å. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(6), one O(8), and two equivalent O(15) atoms. The K(4)-O(1) bond length is 2.73 Å. The K(4)-O(10) bond length is 2.91 Å. The K(4)-O(6) bond length is 3.09 Å. The K(4)-O(8) bond length is 2.70 Å. There is one shorter (2.75 Å) and one longer (2.92 Å) K(4)-O(15) bond length. In the fifth K site, K(5) is bonded in a 5-coordinate geometry to one O(16), one O(7), one O(9), and two equivalent O(2) atoms. The K(5)-O(16) bond length is 2.89 Å. The K(5)-O(7) bond length is 2.89 Å. The K(5)-O(9) bond length is 2.82 Å. There is one shorter (2.81 Å) and one longer (2.82 Å) K(5)-O(2) bond length. In the sixth K site, K(6) is bonded in a 3-coordinate geometry to one O(12), one O(4), and one O(8) atom. The K(6)-O(12) bond length is 2.75 Å. The K(6)-O(4) bond length is 2.83 Å. The K(6)-O(8) bond length is 2.48 Å. In the seventh K site, K(7) is bonded in a 4-coordinate geometry to one O(1), one O(14), and two equivalent O(5) atoms. The K(7)-O(1) bond length is 2.71 Å. The K(7)-O(14) bond length is 2.69 Å. There is one shorter (2.87 Å) and one longer (2.88 Å) K(7)-O(5) bond length. In the eighth K site, K(8) is bonded in a 7-coordinate geometry to one O(11), one O(12), one O(15), one O(16), one O(3), and two equivalent O(6) atoms. The K(8)-O(11) bond length is 3.26 Å. The K(8)-O(12) bond length is 3.11 Å. The K(8)-O(15) bond length is 3.02 Å. The K(8)-O(16) bond length is 2.66 Å. The K(8)-O(3) bond length is 3.04 Å. There is one shorter (2.85 Å) and one longer (2.86 Å) K(8)-O(6) bond length. There are ten inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(13), one O(14), one O(2), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(8)O4 tetrahedra,  a cornercorner with one Fe(2)O4 tetrahedra,  a cornercorner with one Fe(3)O4 tetrahedra, corners with two equivalent Li(6)O4 tetrahedra,  a cornercorner with one Li(2)O4 trigonal pyramid,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Fe(2)O4 tetrahedra. The Li(1)-O(13) bond length is 2.09 Å. The Li(1)-O(14) bond length is 2.22 Å. The Li(1)-O(2) bond length is 2.08 Å. The Li(1)-O(7) bond length is 1.99 Å. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(8), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Fe(4)O4 tetrahedra,  an edgeedge with one Fe(3)O4 tetrahedra,  an edgeedge with one Li(4)O4 trigonal pyramid, and  an edgeedge with one Li(7)O4 trigonal pyramid. The Li(2)-O(1) bond length is 2.00 Å. The Li(2)-O(2) bond length is 2.07 Å. The Li(2)-O(8) bond length is 1.94 Å. The Li(2)-O(9) bond length is 2.01 Å. In the third Li site, Li(3) is bonded to one O(14), one O(3), one O(5), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(9)O4 tetrahedra, corners with two equivalent Fe(2)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(6)O4 tetrahedra,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Fe(1)O4 tetrahedra. The Li(3)-O(14) bond length is 1.94 Å. The Li(3)-O(3) bond length is 2.15 Å. The Li(3)-O(5) bond length is 2.07 Å. The Li(3)-O(7) bond length is 1.98 Å. In the fourth Li site, Li(4) is bonded to one O(1), one O(11), one O(5), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(4)O4 tetrahedra,  a cornercorner with one Li(7)O4 trigonal pyramid,  an edgeedge with one Li(6)O4 tetrahedra,  an edgeedge with one Fe(4)O4 tetrahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The Li(4)-O(1) bond length is 2.05 Å. The Li(4)-O(11) bond length is 2.03 Å. The Li(4)-O(5) bond length is 1.97 Å. The Li(4)-O(9) bond length is 1.97 Å. In the fifth Li site, Li(5) is bonded in a distorted trigonal planar geometry to one O(12), one O(3), and one O(6) atom. The Li(5)-O(12) bond length is 1.94 Å. The Li(5)-O(3) bond length is 1.98 Å. The Li(5)-O(6) bond length is 2.02 Å. In the sixth Li site, Li(6) is bonded to one O(11), one O(14), one O(5), and one O(7) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Li(8)O4 tetrahedra,  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(4)O4 tetrahedra, corners with two equivalent Li(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Fe(2)O4 tetrahedra, and  an edgeedge with one Li(4)O4 trigonal pyramid. The Li(6)-O(11) bond length is 1.94 Å. The Li(6)-O(14) bond length is 2.02 Å. The Li(6)-O(5) bond length is 2.07 Å. The Li(6)-O(7) bond length is 2.08 Å. In the seventh Li site, Li(7) is bonded to one O(15), one O(16), one O(8), and one O(9) atom to form distorted LiO4 trigonal pyramids that share  a cornercorner with one Li(9)O4 tetrahedra, corners with two equivalent Fe(3)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Fe(4)O4 tetrahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. The Li(7)-O(15) bond length is 2.04 Å. The Li(7)-O(16) bond length is 1.95 Å. The Li(7)-O(8) bond length is 1.98 Å. The Li(7)-O(9) bond length is 2.17 Å. In the eighth Li site, Li(8) is bonded to one O(10), one O(12), one O(14), and one O(3) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra,  a cornercorner with one Li(6)O4 tetrahedra, corners with two equivalent Fe(1)O4 tetrahedra,  an edgeedge with one Li(3)O4 tetrahedra,  an edgeedge with one Li(9)O4 tetrahedra, and  an edgeedge with one Fe(2)O4 tetrahedra. The Li(8)-O(10) bond length is 1.96 Å. The Li(8)-O(12) bond length is 2.02 Å. The Li(8)-O(14) bond length is 2.21 Å. The Li(8)-O(3) bond length is 1.98 Å. In the ninth Li site, Li(9) is bonded to one O(10), one O(15), one O(3), and one O(4) atom to form distorted LiO4 tetrahedra that share  a cornercorner with one Li(3)O4 tetrahedra,  a cornercorner with one Fe(1)O4 tetrahedra,  a cornercorner with one Fe(4)O4 tetrahedra,  a cornercorner with one Li(7)O4 trigonal pyramid,  an edgeedge with one Li(8)O4 tetrahedra, and  an edgeedge with one Fe(1)O4 tetrahedra. The Li(9)-O(10) bond length is 1.96 Å. The Li(9)-O(15) bond length is 2.10 Å. The Li(9)-O(3) bond length is 2.21 Å. The Li(9)-O(4) bond length is 2.08 Å. In the tenth Li site, Li(10) is bonded in a bent 150 degrees geometry to one O(13) and one O(4) atom. The Li(10)-O(13) bond length is 1.77 Å. The Li(10)-O(4) bond length is 1.76 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(3), one O(4), and one O(5) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(9)O4 tetrahedra, corners with two equivalent Li(8)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid,  an edgeedge with one Li(3)O4 tetrahedra, and  an edgeedge with one Li(9)O4 tetrahedra. The Fe(1)-O(10) bond length is 1.90 Å. The Fe(1)-O(3) bond length is 1.92 Å. The Fe(1)-O(4) bond length is 1.91 Å. The Fe(1)-O(5) bond length is 1.92 Å. In the second Fe site, Fe(2) is bonded to one O(12), one O(13), one O(14), and one O(7) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(3)O4 tetrahedra,  an edgeedge with one Li(1)O4 tetrahedra,  an edgeedge with one Li(6)O4 tetrahedra, and  an edgeedge with one Li(8)O4 tetrahedra. The Fe(2)-O(12) bond length is 1.87 Å. The Fe(2)-O(13) bond length is 1.93 Å. The Fe(2)-O(14) bond length is 1.90 Å. The Fe(2)-O(7) bond length is 1.91 Å. In the third Fe site, Fe(3) is bonded to one O(16), one O(2), one O(6), and one O(8) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra, corners with two equivalent Li(7)O4 trigonal pyramids, and  an edgeedge with one Li(2)O4 trigonal pyramid. The Fe(3)-O(16) bond length is 1.80 Å. The Fe(3)-O(2) bond length is 1.91 Å. The Fe(3)-O(6) bond length is 1.85 Å. The Fe(3)-O(8) bond length is 1.81 Å. In the fourth Fe site, Fe(4) is bonded to one O(1), one O(11), one O(15), and one O(9) atom to form FeO4 tetrahedra that share  a cornercorner with one Li(6)O4 tetrahedra,  a cornercorner with one Li(9)O4 tetrahedra,  a cornercorner with one Li(4)O4 trigonal pyramid, corners with two equivalent Li(2)O4 trigonal pyramids,  an edgeedge with one Li(4)O4 trigonal pyramid, and  an edgeedge with one Li(7)O4 trigonal pyramid. The Fe(4)-O(1) bond length is 1.85 Å. The Fe(4)-O(11) bond length is 1.84 Å. The Fe(4)-O(15) bond length is 1.83 Å. The Fe(4)-O(9) bond length is 1.87 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), one K(4), one K(7), one Li(2), one Li(4), and one Fe(4) atom. In the second O site, O(2) is bonded to one K(1), two equivalent K(5), one Li(1), one Li(2), and one Fe(3) atom to form distorted corner-sharing OK3Li2Fe octahedra. The corner-sharing octahedral tilt angles are 11°. In the third O site, O(3) is bonded in a 5-coordinate geometry to one K(2), one K(8), one Li(3), one Li(5), one Li(8), one Li(9), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one K(2), one K(3), one K(6), one Li(10), one Li(9), and one Fe(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one K(3), two equivalent K(7), one Li(3), one Li(4), one Li(6), and one Fe(1) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one K(1), one K(4), two equivalent K(8), one Li(5), and one Fe(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one K(3), one K(5), one Li(1), one Li(3), one Li(6), and one Fe(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one K(4), one K(6), one Li(2), one Li(7), and one Fe(3) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one K(3), one K(5), one Li(2), one Li(4), one Li(7), and one Fe(4) atom. In the tenth O site, O(10) is bonded in a 3-coordinate geometry to one K(4), one Li(8), one Li(9), and one Fe(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one K(8), two equivalent K(1), one Li(4), one Li(6), and one Fe(4) atom. In the twelfth O site, O(12) is bonded in a 3-coordinate geometry to one K(6), one K(8), two equivalent K(2), one Li(5), one Li(8), and one Fe(2) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one K(3), one Li(1), one Li(10), and one Fe(2) atom. In the fourteenth O site, O(14) is bonded in a 7-coordinate geometry to one K(1), one K(7), one Li(1), one Li(3), one Li(6), one Li(8), and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one K(8), two equivalent K(4), one Li(7), one Li(9), and one Fe(4) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one K(2), one K(5), one K(8), one Li(7), and one Fe(3) atom.