Na4(Fe2O3)5 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(2), one O(4), two equivalent O(3), and two equivalent O(5) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with three equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-21°. In the second Na site, Na(2) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-19°. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-16°. In the second Fe site, Fe(2) is bonded to one O(1), one O(2), one O(5), one O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra, corners with two equivalent Na(2)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-19°. In the third Fe site, Fe(3) is bonded to one O(1), one O(3), one O(4), one O(7), and two equivalent O(6) atoms to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Na(2)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with three equivalent Fe(1)O6 octahedra, and edges with three equivalent Fe(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-17°. In the fourth Fe site, Fe(4) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-12°. In the fifth Fe site, Fe(5) is bonded to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra, corners with two equivalent Na(1)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-21°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(2), one Fe(2), one Fe(3), and one Fe(5) atom to form ONa2Fe3 square pyramids that share  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(3)Na3Fe3 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(6)Fe6 octahedra, corners with two equivalent O(2)Na2Fe3 square pyramids, corners with two equivalent O(4)Na2Fe3 square pyramids,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(7)Fe6 octahedra,  an edgeedge with one O(8)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra,  an edgeedge with one O(5)Na3Fe3 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid,  an edgeedge with one O(2)Na2Fe3 square pyramid, and  an edgeedge with one O(4)Na2Fe3 square pyramid. The corner-sharing octahedral tilt angles range from 3-12°. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Fe(2), one Fe(4), and one Fe(5) atom to form distorted ONa2Fe3 square pyramids that share  a cornercorner with one O(6)Fe6 octahedra,  a cornercorner with one O(7)Fe6 octahedra,  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(1)Na2Fe3 square pyramids, corners with three equivalent O(4)Na2Fe3 square pyramids,  an edgeedge with one O(6)Fe6 octahedra, edges with two equivalent O(8)Fe6 octahedra, edges with two equivalent O(3)Na3Fe3 octahedra, edges with two equivalent O(5)Na3Fe3 octahedra, and  an edgeedge with one O(1)Na2Fe3 square pyramid. The corner-sharing octahedral tilt angles range from 8-13°. In the third O site, O(3) is bonded to one Na(2), two equivalent Na(1), one Fe(1), one Fe(3), and one Fe(4) atom to form distorted ONa3Fe3 octahedra that share  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(6)Fe6 octahedra,  a cornercorner with one O(1)Na2Fe3 square pyramid,  a cornercorner with one O(4)Na2Fe3 square pyramid,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(7)Fe6 octahedra,  an edgeedge with one O(8)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra, edges with three equivalent O(5)Na3Fe3 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid, edges with two equivalent O(2)Na2Fe3 square pyramids, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 3-10°. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Fe(1), one Fe(3), and one Fe(5) atom to form ONa2Fe3 square pyramids that share  a cornercorner with one O(7)Fe6 octahedra,  a cornercorner with one O(3)Na3Fe3 octahedra, corners with two equivalent O(8)Fe6 octahedra, corners with two equivalent O(1)Na2Fe3 square pyramids, corners with three equivalent O(2)Na2Fe3 square pyramids,  an edgeedge with one O(7)Fe6 octahedra, edges with two equivalent O(6)Fe6 octahedra, edges with two equivalent O(3)Na3Fe3 octahedra, edges with two equivalent O(5)Na3Fe3 octahedra, and  an edgeedge with one O(1)Na2Fe3 square pyramid. The corner-sharing octahedral tilt angles range from 5-9°. In the fifth O site, O(5) is bonded to one Na(2), two equivalent Na(1), one Fe(1), one Fe(2), and one Fe(4) atom to form ONa3Fe3 octahedra that share  a cornercorner with one O(6)Fe6 octahedra,  a cornercorner with one O(7)Fe6 octahedra,  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(3)Na3Fe3 octahedra,  a cornercorner with one O(1)Na2Fe3 square pyramid,  a cornercorner with one O(2)Na2Fe3 square pyramid,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(5)Na3Fe3 octahedra, edges with two equivalent O(8)Fe6 octahedra, edges with three equivalent O(3)Na3Fe3 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid, edges with two equivalent O(2)Na2Fe3 square pyramids, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 3-10°. In the sixth O site, O(6) is bonded to one Fe(1), one Fe(2), one Fe(4), one Fe(5), and two equivalent Fe(3) atoms to form OFe6 octahedra that share  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(3)Na3Fe3 octahedra,  a cornercorner with one O(2)Na2Fe3 square pyramid, corners with two equivalent O(1)Na2Fe3 square pyramids,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra,  an edgeedge with one O(5)Na3Fe3 octahedra, edges with two equivalent O(7)Fe6 octahedra, edges with three equivalent O(8)Fe6 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid,  an edgeedge with one O(2)Na2Fe3 square pyramid, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 7-10°. In the seventh O site, O(7) is bonded to two equivalent Fe(1), two equivalent Fe(3), and two equivalent Fe(5) atoms to form OFe6 octahedra that share corners with two equivalent O(5)Na3Fe3 octahedra, corners with two equivalent O(2)Na2Fe3 square pyramids, corners with two equivalent O(4)Na2Fe3 square pyramids, edges with two equivalent O(8)Fe6 octahedra, edges with two equivalent O(3)Na3Fe3 octahedra, edges with four equivalent O(6)Fe6 octahedra, edges with two equivalent O(1)Na2Fe3 square pyramids, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles are 7°. In the eighth O site, O(8) is bonded to one Fe(1), one Fe(5), two equivalent Fe(2), and two equivalent Fe(4) atoms to form OFe6 octahedra that share  a cornercorner with one O(3)Na3Fe3 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra,  a cornercorner with one O(1)Na2Fe3 square pyramid,  a cornercorner with one O(2)Na2Fe3 square pyramid, corners with two equivalent O(4)Na2Fe3 square pyramids,  an edgeedge with one O(7)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra, edges with two equivalent O(8)Fe6 octahedra, edges with two equivalent O(5)Na3Fe3 octahedra, edges with three equivalent O(6)Fe6 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid, and edges with two equivalent O(2)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 7-10°.
Na4(Fe2O3)5 crystallizes in the triclinic P-1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(2), one O(4), two equivalent O(3), and two equivalent O(5) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(5)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with three equivalent Na(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-21°. The Na(1)-O(2) bond length is 2.34 Å. The Na(1)-O(4) bond length is 2.36 Å. There is one shorter (2.38 Å) and one longer (2.54 Å) Na(1)-O(3) bond length. There is one shorter (2.42 Å) and one longer (2.50 Å) Na(1)-O(5) bond length. In the second Na site, Na(2) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Fe(2)O6 octahedra, corners with two equivalent Fe(3)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(1)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Na(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-19°. The Na(2)-O(2) bond length is 2.48 Å. The Na(2)-O(3) bond length is 2.52 Å. The Na(2)-O(4) bond length is 2.47 Å. The Na(2)-O(5) bond length is 2.41 Å. There is one shorter (2.42 Å) and one longer (2.43 Å) Na(2)-O(1) bond length. There are five inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-16°. The Fe(1)-O(3) bond length is 2.14 Å. The Fe(1)-O(4) bond length is 2.02 Å. The Fe(1)-O(5) bond length is 2.19 Å. The Fe(1)-O(6) bond length is 2.23 Å. The Fe(1)-O(7) bond length is 2.21 Å. The Fe(1)-O(8) bond length is 2.25 Å. In the second Fe site, Fe(2) is bonded to one O(1), one O(2), one O(5), one O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra, corners with two equivalent Na(2)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Fe(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 1-19°. The Fe(2)-O(1) bond length is 1.99 Å. The Fe(2)-O(2) bond length is 1.95 Å. The Fe(2)-O(5) bond length is 2.00 Å. The Fe(2)-O(6) bond length is 2.19 Å. There is one shorter (2.17 Å) and one longer (2.30 Å) Fe(2)-O(8) bond length. In the third Fe site, Fe(3) is bonded to one O(1), one O(3), one O(4), one O(7), and two equivalent O(6) atoms to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  a cornercorner with one Fe(4)O6 octahedra, corners with two equivalent Na(2)O6 octahedra,  an edgeedge with one Na(1)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with three equivalent Fe(1)O6 octahedra, and edges with three equivalent Fe(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-17°. The Fe(3)-O(1) bond length is 1.97 Å. The Fe(3)-O(3) bond length is 1.99 Å. The Fe(3)-O(4) bond length is 1.97 Å. The Fe(3)-O(7) bond length is 2.25 Å. Both Fe(3)-O(6) bond lengths are 2.26 Å. In the fourth Fe site, Fe(4) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(8) atoms to form FeO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  a cornercorner with one Na(2)O6 octahedra,  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(3)O6 octahedra,  an edgeedge with one Na(2)O6 octahedra,  an edgeedge with one Fe(3)O6 octahedra,  an edgeedge with one Fe(4)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(5)O6 octahedra, and edges with three equivalent Fe(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-12°. The Fe(4)-O(2) bond length is 1.95 Å. The Fe(4)-O(3) bond length is 2.00 Å. The Fe(4)-O(5) bond length is 1.98 Å. The Fe(4)-O(6) bond length is 2.20 Å. There is one shorter (2.14 Å) and one longer (2.26 Å) Fe(4)-O(8) bond length. In the fifth Fe site, Fe(5) is bonded to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom to form FeO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra,  a cornercorner with one Fe(5)O6 octahedra, corners with two equivalent Na(1)O6 octahedra, edges with two equivalent Na(2)O6 octahedra, edges with two equivalent Fe(1)O6 octahedra, edges with two equivalent Fe(2)O6 octahedra, edges with two equivalent Fe(4)O6 octahedra, and edges with three equivalent Fe(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 0-21°. The Fe(5)-O(1) bond length is 2.10 Å. The Fe(5)-O(2) bond length is 2.12 Å. The Fe(5)-O(4) bond length is 2.08 Å. The Fe(5)-O(6) bond length is 2.17 Å. The Fe(5)-O(7) bond length is 2.21 Å. The Fe(5)-O(8) bond length is 2.37 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(2), one Fe(2), one Fe(3), and one Fe(5) atom to form ONa2Fe3 square pyramids that share  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(3)Na3Fe3 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(6)Fe6 octahedra, corners with two equivalent O(2)Na2Fe3 square pyramids, corners with two equivalent O(4)Na2Fe3 square pyramids,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(7)Fe6 octahedra,  an edgeedge with one O(8)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra,  an edgeedge with one O(5)Na3Fe3 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid,  an edgeedge with one O(2)Na2Fe3 square pyramid, and  an edgeedge with one O(4)Na2Fe3 square pyramid. The corner-sharing octahedral tilt angles range from 3-12°. In the second O site, O(2) is bonded to one Na(1), one Na(2), one Fe(2), one Fe(4), and one Fe(5) atom to form distorted ONa2Fe3 square pyramids that share  a cornercorner with one O(6)Fe6 octahedra,  a cornercorner with one O(7)Fe6 octahedra,  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(1)Na2Fe3 square pyramids, corners with three equivalent O(4)Na2Fe3 square pyramids,  an edgeedge with one O(6)Fe6 octahedra, edges with two equivalent O(8)Fe6 octahedra, edges with two equivalent O(3)Na3Fe3 octahedra, edges with two equivalent O(5)Na3Fe3 octahedra, and  an edgeedge with one O(1)Na2Fe3 square pyramid. The corner-sharing octahedral tilt angles range from 8-13°. In the third O site, O(3) is bonded to one Na(2), two equivalent Na(1), one Fe(1), one Fe(3), and one Fe(4) atom to form distorted ONa3Fe3 octahedra that share  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(6)Fe6 octahedra,  a cornercorner with one O(1)Na2Fe3 square pyramid,  a cornercorner with one O(4)Na2Fe3 square pyramid,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(7)Fe6 octahedra,  an edgeedge with one O(8)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra, edges with three equivalent O(5)Na3Fe3 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid, edges with two equivalent O(2)Na2Fe3 square pyramids, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 3-10°. In the fourth O site, O(4) is bonded to one Na(1), one Na(2), one Fe(1), one Fe(3), and one Fe(5) atom to form ONa2Fe3 square pyramids that share  a cornercorner with one O(7)Fe6 octahedra,  a cornercorner with one O(3)Na3Fe3 octahedra, corners with two equivalent O(8)Fe6 octahedra, corners with two equivalent O(1)Na2Fe3 square pyramids, corners with three equivalent O(2)Na2Fe3 square pyramids,  an edgeedge with one O(7)Fe6 octahedra, edges with two equivalent O(6)Fe6 octahedra, edges with two equivalent O(3)Na3Fe3 octahedra, edges with two equivalent O(5)Na3Fe3 octahedra, and  an edgeedge with one O(1)Na2Fe3 square pyramid. The corner-sharing octahedral tilt angles range from 5-9°. In the fifth O site, O(5) is bonded to one Na(2), two equivalent Na(1), one Fe(1), one Fe(2), and one Fe(4) atom to form ONa3Fe3 octahedra that share  a cornercorner with one O(6)Fe6 octahedra,  a cornercorner with one O(7)Fe6 octahedra,  a cornercorner with one O(8)Fe6 octahedra,  a cornercorner with one O(3)Na3Fe3 octahedra,  a cornercorner with one O(1)Na2Fe3 square pyramid,  a cornercorner with one O(2)Na2Fe3 square pyramid,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(5)Na3Fe3 octahedra, edges with two equivalent O(8)Fe6 octahedra, edges with three equivalent O(3)Na3Fe3 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid, edges with two equivalent O(2)Na2Fe3 square pyramids, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 3-10°. In the sixth O site, O(6) is bonded to one Fe(1), one Fe(2), one Fe(4), one Fe(5), and two equivalent Fe(3) atoms to form OFe6 octahedra that share  a cornercorner with one O(5)Na3Fe3 octahedra, corners with two equivalent O(3)Na3Fe3 octahedra,  a cornercorner with one O(2)Na2Fe3 square pyramid, corners with two equivalent O(1)Na2Fe3 square pyramids,  an edgeedge with one O(6)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra,  an edgeedge with one O(5)Na3Fe3 octahedra, edges with two equivalent O(7)Fe6 octahedra, edges with three equivalent O(8)Fe6 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid,  an edgeedge with one O(2)Na2Fe3 square pyramid, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 7-10°. In the seventh O site, O(7) is bonded to two equivalent Fe(1), two equivalent Fe(3), and two equivalent Fe(5) atoms to form OFe6 octahedra that share corners with two equivalent O(5)Na3Fe3 octahedra, corners with two equivalent O(2)Na2Fe3 square pyramids, corners with two equivalent O(4)Na2Fe3 square pyramids, edges with two equivalent O(8)Fe6 octahedra, edges with two equivalent O(3)Na3Fe3 octahedra, edges with four equivalent O(6)Fe6 octahedra, edges with two equivalent O(1)Na2Fe3 square pyramids, and edges with two equivalent O(4)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles are 7°. In the eighth O site, O(8) is bonded to one Fe(1), one Fe(5), two equivalent Fe(2), and two equivalent Fe(4) atoms to form OFe6 octahedra that share  a cornercorner with one O(3)Na3Fe3 octahedra,  a cornercorner with one O(5)Na3Fe3 octahedra,  a cornercorner with one O(1)Na2Fe3 square pyramid,  a cornercorner with one O(2)Na2Fe3 square pyramid, corners with two equivalent O(4)Na2Fe3 square pyramids,  an edgeedge with one O(7)Fe6 octahedra,  an edgeedge with one O(3)Na3Fe3 octahedra, edges with two equivalent O(8)Fe6 octahedra, edges with two equivalent O(5)Na3Fe3 octahedra, edges with three equivalent O(6)Fe6 octahedra,  an edgeedge with one O(1)Na2Fe3 square pyramid, and edges with two equivalent O(2)Na2Fe3 square pyramids. The corner-sharing octahedral tilt angles range from 7-10°.