Na3(CoO2)5 crystallizes in the triclinic P1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(13), one O(15), one O(3), and one O(9) atom. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(2), and one O(4) atom. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one O(13), one O(17), one O(19), one O(5), one O(7), and one O(9) atom. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(18), one O(20), one O(6), and one O(8) atom. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(17), one O(19), one O(5), and one O(7) atom. In the sixth Na site, Na(6) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(18), one O(20), one O(6), and one O(8) atom. There are ten inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(12), one O(13), one O(15), one O(2), and one O(3) atom to form edge-sharing CoO6 octahedra. In the second Co site, Co(2) is bonded to one O(10), one O(13), one O(19), one O(2), one O(3), and one O(6) atom to form edge-sharing CoO6 octahedra. In the third Co site, Co(3) is bonded to one O(1), one O(14), one O(20), one O(4), one O(5), and one O(9) atom to form edge-sharing CoO6 octahedra. In the fourth Co site, Co(4) is bonded to one O(12), one O(15), one O(17), one O(2), one O(3), and one O(8) atom to form edge-sharing CoO6 octahedra. In the fifth Co site, Co(5) is bonded to one O(1), one O(11), one O(16), one O(18), one O(4), and one O(7) atom to form edge-sharing CoO6 octahedra. In the sixth Co site, Co(6) is bonded to one O(1), one O(11), one O(14), one O(16), one O(4), and one O(9) atom to form edge-sharing CoO6 octahedra. In the seventh Co site, Co(7) is bonded to one O(14), one O(18), one O(20), one O(5), one O(7), and one O(9) atom to form edge-sharing CoO6 octahedra. In the eighth Co site, Co(8) is bonded to one O(10), one O(13), one O(17), one O(19), one O(6), and one O(8) atom to form edge-sharing CoO6 octahedra. In the ninth Co site, Co(9) is bonded to one O(11), one O(16), one O(18), one O(20), one O(5), and one O(7) atom to form edge-sharing CoO6 octahedra. In the tenth Co site, Co(10) is bonded to one O(12), one O(15), one O(17), one O(19), one O(6), and one O(8) atom to form edge-sharing CoO6 octahedra. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Co(3), one Co(5), and one Co(6) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(5)Na2Co3 square pyramid,  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(9)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, and  an edgeedge with one O(4)NaCo3 trigonal pyramid. In the second O site, O(2) is bonded to one Na(2), one Co(1), one Co(2), and one Co(4) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(6)Na2Co3 square pyramid,  a cornercorner with one O(8)Na2Co3 square pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, and  an edgeedge with one O(3)NaCo3 trigonal pyramid. In the third O site, O(3) is bonded to one Na(1), one Co(1), one Co(2), and one Co(4) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(6)Na2Co3 square pyramid,  a cornercorner with one O(8)Na2Co3 square pyramid,  a cornercorner with one O(9)Na2Co3 square pyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, and  an edgeedge with one O(2)NaCo3 trigonal pyramid. In the fourth O site, O(4) is bonded to one Na(2), one Co(3), one Co(5), and one Co(6) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(5)Na2Co3 square pyramid,  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, and  an edgeedge with one O(1)NaCo3 trigonal pyramid. In the fifth O site, O(5) is bonded to one Na(3), one Na(5), one Co(3), one Co(7), and one Co(9) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(9)Na2Co3 square pyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, edges with two equivalent O(7)Na2Co3 square pyramids,  an edgeedge with one O(18)Na2Co3 trigonal bipyramid, and  an edgeedge with one O(20)Na2Co3 trigonal bipyramid. In the sixth O site, O(6) is bonded to one Na(4), one Na(6), one Co(10), one Co(2), and one Co(8) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid, corners with two equivalent O(18)Na2Co3 trigonal bipyramids,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, edges with two equivalent O(8)Na2Co3 square pyramids, and  an edgeedge with one O(20)Na2Co3 trigonal bipyramid. In the seventh O site, O(7) is bonded to one Na(3), one Na(5), one Co(5), one Co(7), and one Co(9) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, edges with two equivalent O(5)Na2Co3 square pyramids,  an edgeedge with one O(18)Na2Co3 trigonal bipyramid, and  an edgeedge with one O(20)Na2Co3 trigonal bipyramid. In the eighth O site, O(8) is bonded to one Na(4), one Na(6), one Co(10), one Co(4), and one Co(8) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(12)Na2Co3 square pyramid, corners with two equivalent O(20)Na2Co3 trigonal bipyramids,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, edges with two equivalent O(6)Na2Co3 square pyramids, and  an edgeedge with one O(18)Na2Co3 trigonal bipyramid. In the ninth O site, O(9) is bonded to one Na(1), one Na(3), one Co(3), one Co(6), and one Co(7) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(5)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(20)Na2Co3 trigonal bipyramid,  an edgeedge with one O(1)NaCo3 trigonal pyramid, and  an edgeedge with one O(4)NaCo3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Na(2), one Na(4), one Co(1), one Co(2), and one Co(8) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(6)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid,  an edgeedge with one O(6)Na2Co3 square pyramid,  an edgeedge with one O(8)Na2Co3 square pyramid,  an edgeedge with one O(2)NaCo3 trigonal pyramid, and  an edgeedge with one O(3)NaCo3 trigonal pyramid. In the eleventh O site, O(11) is bonded to one Na(1), one Na(5), one Co(5), one Co(6), and one Co(9) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid,  an edgeedge with one O(18)Na2Co3 trigonal bipyramid,  an edgeedge with one O(1)NaCo3 trigonal pyramid, and  an edgeedge with one O(4)NaCo3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Na(2), one Na(6), one Co(1), one Co(10), and one Co(4) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(8)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(6)Na2Co3 square pyramid,  an edgeedge with one O(8)Na2Co3 square pyramid,  an edgeedge with one O(2)NaCo3 trigonal pyramid, and  an edgeedge with one O(3)NaCo3 trigonal pyramid. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Co(1), one Co(2), and one Co(8) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Co(3), one Co(6), and one Co(7) atom. In the fifteenth O site, O(15) is bonded in a 5-coordinate geometry to one Na(1), one Na(5), one Co(1), one Co(10), and one Co(4) atom. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Na(2), one Na(6), one Co(5), one Co(6), and one Co(9) atom. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Na(3), one Na(5), one Co(10), one Co(4), and one Co(8) atom. In the eighteenth O site, O(18) is bonded to one Na(4), one Na(6), one Co(5), one Co(7), and one Co(9) atom to form distorted ONa2Co3 trigonal bipyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(9)Na2Co3 square pyramid, corners with two equivalent O(6)Na2Co3 square pyramids,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(8)Na2Co3 square pyramid, and edges with two equivalent O(20)Na2Co3 trigonal bipyramids. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(3), one Na(5), one Co(10), one Co(2), and one Co(8) atom. In the twentieth O site, O(20) is bonded to one Na(4), one Na(6), one Co(3), one Co(7), and one Co(9) atom to form distorted ONa2Co3 trigonal bipyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(5)Na2Co3 square pyramid, corners with two equivalent O(8)Na2Co3 square pyramids,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(6)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, and edges with two equivalent O(18)Na2Co3 trigonal bipyramids.
Na3(CoO2)5 crystallizes in the triclinic P1 space group. There are six inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(13), one O(15), one O(3), and one O(9) atom. The Na(1)-O(1) bond length is 2.44 Å. The Na(1)-O(11) bond length is 2.36 Å. The Na(1)-O(13) bond length is 2.47 Å. The Na(1)-O(15) bond length is 2.46 Å. The Na(1)-O(3) bond length is 2.44 Å. The Na(1)-O(9) bond length is 2.41 Å. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(12), one O(14), one O(16), one O(2), and one O(4) atom. The Na(2)-O(10) bond length is 2.41 Å. The Na(2)-O(12) bond length is 2.33 Å. The Na(2)-O(14) bond length is 2.47 Å. The Na(2)-O(16) bond length is 2.44 Å. The Na(2)-O(2) bond length is 2.45 Å. The Na(2)-O(4) bond length is 2.49 Å. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one O(13), one O(17), one O(19), one O(5), one O(7), and one O(9) atom. The Na(3)-O(13) bond length is 2.42 Å. The Na(3)-O(17) bond length is 2.43 Å. The Na(3)-O(19) bond length is 2.44 Å. The Na(3)-O(5) bond length is 2.33 Å. The Na(3)-O(7) bond length is 2.40 Å. The Na(3)-O(9) bond length is 2.36 Å. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(18), one O(20), one O(6), and one O(8) atom. The Na(4)-O(10) bond length is 2.41 Å. The Na(4)-O(14) bond length is 2.47 Å. The Na(4)-O(18) bond length is 2.46 Å. The Na(4)-O(20) bond length is 2.41 Å. The Na(4)-O(6) bond length is 2.41 Å. The Na(4)-O(8) bond length is 2.39 Å. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(17), one O(19), one O(5), and one O(7) atom. The Na(5)-O(11) bond length is 2.37 Å. The Na(5)-O(15) bond length is 2.45 Å. The Na(5)-O(17) bond length is 2.51 Å. The Na(5)-O(19) bond length is 2.46 Å. The Na(5)-O(5) bond length is 2.44 Å. The Na(5)-O(7) bond length is 2.41 Å. In the sixth Na site, Na(6) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(18), one O(20), one O(6), and one O(8) atom. The Na(6)-O(12) bond length is 2.36 Å. The Na(6)-O(16) bond length is 2.49 Å. The Na(6)-O(18) bond length is 2.47 Å. The Na(6)-O(20) bond length is 2.43 Å. The Na(6)-O(6) bond length is 2.47 Å. The Na(6)-O(8) bond length is 2.34 Å. There are ten inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(10), one O(12), one O(13), one O(15), one O(2), and one O(3) atom to form edge-sharing CoO6 octahedra. The Co(1)-O(10) bond length is 1.93 Å. The Co(1)-O(12) bond length is 1.92 Å. The Co(1)-O(13) bond length is 1.95 Å. The Co(1)-O(15) bond length is 1.93 Å. The Co(1)-O(2) bond length is 1.93 Å. The Co(1)-O(3) bond length is 1.93 Å. In the second Co site, Co(2) is bonded to one O(10), one O(13), one O(19), one O(2), one O(3), and one O(6) atom to form edge-sharing CoO6 octahedra. The Co(2)-O(10) bond length is 1.93 Å. The Co(2)-O(13) bond length is 1.93 Å. The Co(2)-O(19) bond length is 1.91 Å. The Co(2)-O(2) bond length is 1.88 Å. The Co(2)-O(3) bond length is 1.87 Å. The Co(2)-O(6) bond length is 1.96 Å. In the third Co site, Co(3) is bonded to one O(1), one O(14), one O(20), one O(4), one O(5), and one O(9) atom to form edge-sharing CoO6 octahedra. The Co(3)-O(1) bond length is 1.91 Å. The Co(3)-O(14) bond length is 1.92 Å. The Co(3)-O(20) bond length is 1.87 Å. The Co(3)-O(4) bond length is 1.90 Å. The Co(3)-O(5) bond length is 1.92 Å. The Co(3)-O(9) bond length is 1.92 Å. In the fourth Co site, Co(4) is bonded to one O(12), one O(15), one O(17), one O(2), one O(3), and one O(8) atom to form edge-sharing CoO6 octahedra. The Co(4)-O(12) bond length is 1.92 Å. The Co(4)-O(15) bond length is 1.95 Å. The Co(4)-O(17) bond length is 1.95 Å. The Co(4)-O(2) bond length is 1.93 Å. The Co(4)-O(3) bond length is 1.92 Å. The Co(4)-O(8) bond length is 1.96 Å. In the fifth Co site, Co(5) is bonded to one O(1), one O(11), one O(16), one O(18), one O(4), and one O(7) atom to form edge-sharing CoO6 octahedra. The Co(5)-O(1) bond length is 1.91 Å. The Co(5)-O(11) bond length is 1.89 Å. The Co(5)-O(16) bond length is 1.92 Å. The Co(5)-O(18) bond length is 1.90 Å. The Co(5)-O(4) bond length is 1.90 Å. The Co(5)-O(7) bond length is 1.93 Å. In the sixth Co site, Co(6) is bonded to one O(1), one O(11), one O(14), one O(16), one O(4), and one O(9) atom to form edge-sharing CoO6 octahedra. The Co(6)-O(1) bond length is 1.93 Å. The Co(6)-O(11) bond length is 1.94 Å. The Co(6)-O(14) bond length is 1.93 Å. The Co(6)-O(16) bond length is 1.95 Å. The Co(6)-O(4) bond length is 1.93 Å. The Co(6)-O(9) bond length is 1.92 Å. In the seventh Co site, Co(7) is bonded to one O(14), one O(18), one O(20), one O(5), one O(7), and one O(9) atom to form edge-sharing CoO6 octahedra. The Co(7)-O(14) bond length is 1.92 Å. The Co(7)-O(18) bond length is 1.96 Å. The Co(7)-O(20) bond length is 2.07 Å. The Co(7)-O(5) bond length is 2.05 Å. The Co(7)-O(7) bond length is 1.91 Å. The Co(7)-O(9) bond length is 1.96 Å. In the eighth Co site, Co(8) is bonded to one O(10), one O(13), one O(17), one O(19), one O(6), and one O(8) atom to form edge-sharing CoO6 octahedra. The Co(8)-O(10) bond length is 1.91 Å. The Co(8)-O(13) bond length is 1.92 Å. The Co(8)-O(17) bond length is 1.90 Å. The Co(8)-O(19) bond length is 1.90 Å. The Co(8)-O(6) bond length is 1.92 Å. The Co(8)-O(8) bond length is 1.89 Å. In the ninth Co site, Co(9) is bonded to one O(11), one O(16), one O(18), one O(20), one O(5), and one O(7) atom to form edge-sharing CoO6 octahedra. The Co(9)-O(11) bond length is 2.02 Å. The Co(9)-O(16) bond length is 1.95 Å. The Co(9)-O(18) bond length is 2.03 Å. The Co(9)-O(20) bond length is 2.05 Å. The Co(9)-O(5) bond length is 1.94 Å. The Co(9)-O(7) bond length is 2.03 Å. In the tenth Co site, Co(10) is bonded to one O(12), one O(15), one O(17), one O(19), one O(6), and one O(8) atom to form edge-sharing CoO6 octahedra. The Co(10)-O(12) bond length is 1.99 Å. The Co(10)-O(15) bond length is 1.88 Å. The Co(10)-O(17) bond length is 2.01 Å. The Co(10)-O(19) bond length is 2.10 Å. The Co(10)-O(6) bond length is 1.91 Å. The Co(10)-O(8) bond length is 1.99 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Co(3), one Co(5), and one Co(6) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(5)Na2Co3 square pyramid,  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(9)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, and  an edgeedge with one O(4)NaCo3 trigonal pyramid. In the second O site, O(2) is bonded to one Na(2), one Co(1), one Co(2), and one Co(4) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(6)Na2Co3 square pyramid,  a cornercorner with one O(8)Na2Co3 square pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, and  an edgeedge with one O(3)NaCo3 trigonal pyramid. In the third O site, O(3) is bonded to one Na(1), one Co(1), one Co(2), and one Co(4) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(6)Na2Co3 square pyramid,  a cornercorner with one O(8)Na2Co3 square pyramid,  a cornercorner with one O(9)Na2Co3 square pyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, and  an edgeedge with one O(2)NaCo3 trigonal pyramid. In the fourth O site, O(4) is bonded to one Na(2), one Co(3), one Co(5), and one Co(6) atom to form distorted ONaCo3 trigonal pyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(5)Na2Co3 square pyramid,  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, and  an edgeedge with one O(1)NaCo3 trigonal pyramid. In the fifth O site, O(5) is bonded to one Na(3), one Na(5), one Co(3), one Co(7), and one Co(9) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(9)Na2Co3 square pyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, edges with two equivalent O(7)Na2Co3 square pyramids,  an edgeedge with one O(18)Na2Co3 trigonal bipyramid, and  an edgeedge with one O(20)Na2Co3 trigonal bipyramid. In the sixth O site, O(6) is bonded to one Na(4), one Na(6), one Co(10), one Co(2), and one Co(8) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid, corners with two equivalent O(18)Na2Co3 trigonal bipyramids,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, edges with two equivalent O(8)Na2Co3 square pyramids, and  an edgeedge with one O(20)Na2Co3 trigonal bipyramid. In the seventh O site, O(7) is bonded to one Na(3), one Na(5), one Co(5), one Co(7), and one Co(9) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, edges with two equivalent O(5)Na2Co3 square pyramids,  an edgeedge with one O(18)Na2Co3 trigonal bipyramid, and  an edgeedge with one O(20)Na2Co3 trigonal bipyramid. In the eighth O site, O(8) is bonded to one Na(4), one Na(6), one Co(10), one Co(4), and one Co(8) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(12)Na2Co3 square pyramid, corners with two equivalent O(20)Na2Co3 trigonal bipyramids,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid, edges with two equivalent O(6)Na2Co3 square pyramids, and  an edgeedge with one O(18)Na2Co3 trigonal bipyramid. In the ninth O site, O(9) is bonded to one Na(1), one Na(3), one Co(3), one Co(6), and one Co(7) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(5)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(20)Na2Co3 trigonal bipyramid,  an edgeedge with one O(1)NaCo3 trigonal pyramid, and  an edgeedge with one O(4)NaCo3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Na(2), one Na(4), one Co(1), one Co(2), and one Co(8) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(6)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(12)Na2Co3 square pyramid,  an edgeedge with one O(6)Na2Co3 square pyramid,  an edgeedge with one O(8)Na2Co3 square pyramid,  an edgeedge with one O(2)NaCo3 trigonal pyramid, and  an edgeedge with one O(3)NaCo3 trigonal pyramid. In the eleventh O site, O(11) is bonded to one Na(1), one Na(5), one Co(5), one Co(6), and one Co(9) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(3)NaCo3 trigonal pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid,  an edgeedge with one O(18)Na2Co3 trigonal bipyramid,  an edgeedge with one O(1)NaCo3 trigonal pyramid, and  an edgeedge with one O(4)NaCo3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Na(2), one Na(6), one Co(1), one Co(10), and one Co(4) atom to form ONa2Co3 square pyramids that share  a cornercorner with one O(8)Na2Co3 square pyramid,  a cornercorner with one O(18)Na2Co3 trigonal bipyramid,  a cornercorner with one O(20)Na2Co3 trigonal bipyramid,  a cornercorner with one O(2)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(10)Na2Co3 square pyramid,  an edgeedge with one O(6)Na2Co3 square pyramid,  an edgeedge with one O(8)Na2Co3 square pyramid,  an edgeedge with one O(2)NaCo3 trigonal pyramid, and  an edgeedge with one O(3)NaCo3 trigonal pyramid. In the thirteenth O site, O(13) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Co(1), one Co(2), and one Co(8) atom. In the fourteenth O site, O(14) is bonded in a 5-coordinate geometry to one Na(2), one Na(4), one Co(3), one Co(6), and one Co(7) atom. In the fifteenth O site, O(15) is bonded in a 5-coordinate geometry to one Na(1), one Na(5), one Co(1), one Co(10), and one Co(4) atom. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one Na(2), one Na(6), one Co(5), one Co(6), and one Co(9) atom. In the seventeenth O site, O(17) is bonded in a 5-coordinate geometry to one Na(3), one Na(5), one Co(10), one Co(4), and one Co(8) atom. In the eighteenth O site, O(18) is bonded to one Na(4), one Na(6), one Co(5), one Co(7), and one Co(9) atom to form distorted ONa2Co3 trigonal bipyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(7)Na2Co3 square pyramid,  a cornercorner with one O(9)Na2Co3 square pyramid, corners with two equivalent O(6)Na2Co3 square pyramids,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(11)Na2Co3 square pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(8)Na2Co3 square pyramid, and edges with two equivalent O(20)Na2Co3 trigonal bipyramids. In the nineteenth O site, O(19) is bonded in a 5-coordinate geometry to one Na(3), one Na(5), one Co(10), one Co(2), and one Co(8) atom. In the twentieth O site, O(20) is bonded to one Na(4), one Na(6), one Co(3), one Co(7), and one Co(9) atom to form distorted ONa2Co3 trigonal bipyramids that share  a cornercorner with one O(10)Na2Co3 square pyramid,  a cornercorner with one O(11)Na2Co3 square pyramid,  a cornercorner with one O(12)Na2Co3 square pyramid,  a cornercorner with one O(5)Na2Co3 square pyramid, corners with two equivalent O(8)Na2Co3 square pyramids,  a cornercorner with one O(1)NaCo3 trigonal pyramid,  a cornercorner with one O(4)NaCo3 trigonal pyramid,  an edgeedge with one O(5)Na2Co3 square pyramid,  an edgeedge with one O(6)Na2Co3 square pyramid,  an edgeedge with one O(7)Na2Co3 square pyramid,  an edgeedge with one O(9)Na2Co3 square pyramid, and edges with two equivalent O(18)Na2Co3 trigonal bipyramids.