The structure described by Na4FeO5 crystallizes in the monoclinic Pm space group. There are sixteen inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(19), one O(9), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(2), one O(20), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(18), one O(3), and two equivalent O(7) atoms. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(17), one O(4), and two equivalent O(8) atoms. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(16), one O(17), one O(4), one O(5), and two equivalent O(9) atoms. In the sixth Na site, Na(6) is bonded in a 6-coordinate geometry to one O(15), one O(18), one O(3), one O(6), and two equivalent O(10) atoms. In the seventh Na site, Na(7) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(19), one O(7), and two equivalent O(11) atoms. In the eighth Na site, Na(8) is bonded in a 6-coordinate geometry to one O(14), one O(2), one O(20), one O(8), and two equivalent O(12) atoms. In the ninth Na site, Na(9) is bonded in a 6-coordinate geometry to one O(11), one O(17), one O(3), one O(5), and two equivalent O(13) atoms. In the tenth Na site, Na(10) is bonded in a 6-coordinate geometry to one O(12), one O(18), one O(4), one O(6), and two equivalent O(14) atoms. In the eleventh Na site, Na(11) is bonded in a 6-coordinate geometry to one O(10), one O(19), one O(2), one O(7), and two equivalent O(15) atoms. In the twelfth Na site, Na(12) is bonded in a 6-coordinate geometry to one O(1), one O(20), one O(8), one O(9), and two equivalent O(16) atoms. In the thirteenth Na site, Na(13) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(8), one O(9), and two equivalent O(17) atoms. In the fourteenth Na site, Na(14) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(2), one O(7), and two equivalent O(18) atoms. In the fifteenth Na site, Na(15) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(3), one O(5), and two equivalent O(19) atoms. In the sixteenth Na site, Na(16) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(4), one O(6), and two equivalent O(20) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(12), one O(15), one O(18), one O(6), and two equivalent O(2) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to one O(14), one O(20), one O(8), one O(9), and two equivalent O(4) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. In the third Fe site, Fe(3) is bonded to one O(11), one O(16), one O(17), one O(5), and two equivalent O(1) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. In the fourth Fe site, Fe(4) is bonded to one O(10), one O(13), one O(19), one O(7), and two equivalent O(3) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(12), one Na(13), one Na(7), and two equivalent Fe(3) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded to one Na(11), one Na(14), one Na(2), one Na(8), and two equivalent Fe(1) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded to one Na(15), one Na(3), one Na(6), one Na(9), and two equivalent Fe(4) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the fourth O site, O(4) is bonded to one Na(10), one Na(16), one Na(4), one Na(5), and two equivalent Fe(2) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Na(15), one Na(5), one Na(9), two equivalent Na(1), and one Fe(3) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Na(10), one Na(16), one Na(6), two equivalent Na(2), and one Fe(1) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Na(11), one Na(14), one Na(7), two equivalent Na(3), and one Fe(4) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Na(12), one Na(13), one Na(8), two equivalent Na(4), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Na(1), one Na(12), one Na(13), two equivalent Na(5), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Na(11), one Na(14), one Na(2), two equivalent Na(6), and one Fe(4) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Na(15), one Na(3), one Na(9), two equivalent Na(7), and one Fe(3) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Na(10), one Na(16), one Na(4), two equivalent Na(8), and one Fe(1) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Na(1), one Na(13), one Na(7), two equivalent Na(9), and one Fe(4) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Na(14), one Na(2), one Na(8), two equivalent Na(10), and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one Na(15), one Na(3), one Na(6), two equivalent Na(11), and one Fe(1) atom. In the sixteenth O site, O(16) is bonded in a 6-coordinate geometry to one Na(16), one Na(4), one Na(5), two equivalent Na(12), and one Fe(3) atom. In the seventeenth O site, O(17) is bonded in a 6-coordinate geometry to one Na(4), one Na(5), one Na(9), two equivalent Na(13), and one Fe(3) atom. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Na(10), one Na(3), one Na(6), two equivalent Na(14), and one Fe(1) atom. In the nineteenth O site, O(19) is bonded in a 6-coordinate geometry to one Na(1), one Na(11), one Na(7), two equivalent Na(15), and one Fe(4) atom. In the twentieth O site, O(20) is bonded in a 6-coordinate geometry to one Na(12), one Na(2), one Na(8), two equivalent Na(16), and one Fe(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4FeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.571
_cell_length_b   5.741
_cell_length_c   5.745
_cell_angle_alpha   80.810
_cell_angle_beta   66.558
_cell_angle_gamma   66.540
_symmetry_Int_Tables_number   1
_cell_volume   126.885
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Fe  Fe0  1  1.000  0.000  0.000  1.0
  Na  Na1  1  0.209  0.186  0.396  1.0
  Na  Na2  1  0.606  0.603  0.186  1.0
  Na  Na3  1  0.395  0.397  0.814  1.0
  Na  Na4  1  0.791  0.814  0.603  1.0
  O  O5  1  0.500  1.000  0.000  1.0
  O  O6  1  0.762  0.172  0.305  1.0
  O  O7  1  0.067  0.695  0.172  1.0
  O  O8  1  0.934  0.305  0.827  1.0
  O  O9  1  0.238  0.828  0.695  1.0
[/CIF]
.
The structure described by Na4FeO5 crystallizes in the monoclinic Pm space group. There are sixteen inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(19), one O(9), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(2), one O(20), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(18), one O(3), and two equivalent O(7) atoms. In the fourth Na site, Na(4) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(17), one O(4), and two equivalent O(8) atoms. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(16), one O(17), one O(4), one O(5), and two equivalent O(9) atoms. In the sixth Na site, Na(6) is bonded in a 6-coordinate geometry to one O(15), one O(18), one O(3), one O(6), and two equivalent O(10) atoms. In the seventh Na site, Na(7) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(19), one O(7), and two equivalent O(11) atoms. In the eighth Na site, Na(8) is bonded in a 6-coordinate geometry to one O(14), one O(2), one O(20), one O(8), and two equivalent O(12) atoms. In the ninth Na site, Na(9) is bonded in a 6-coordinate geometry to one O(11), one O(17), one O(3), one O(5), and two equivalent O(13) atoms. In the tenth Na site, Na(10) is bonded in a 6-coordinate geometry to one O(12), one O(18), one O(4), one O(6), and two equivalent O(14) atoms. In the eleventh Na site, Na(11) is bonded in a 6-coordinate geometry to one O(10), one O(19), one O(2), one O(7), and two equivalent O(15) atoms. In the twelfth Na site, Na(12) is bonded in a 6-coordinate geometry to one O(1), one O(20), one O(8), one O(9), and two equivalent O(16) atoms. In the thirteenth Na site, Na(13) is bonded in a 6-coordinate geometry to one O(1), one O(13), one O(8), one O(9), and two equivalent O(17) atoms. In the fourteenth Na site, Na(14) is bonded in a 6-coordinate geometry to one O(10), one O(14), one O(2), one O(7), and two equivalent O(18) atoms. In the fifteenth Na site, Na(15) is bonded in a 6-coordinate geometry to one O(11), one O(15), one O(3), one O(5), and two equivalent O(19) atoms. In the sixteenth Na site, Na(16) is bonded in a 6-coordinate geometry to one O(12), one O(16), one O(4), one O(6), and two equivalent O(20) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(12), one O(15), one O(18), one O(6), and two equivalent O(2) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. In the second Fe site, Fe(2) is bonded to one O(14), one O(20), one O(8), one O(9), and two equivalent O(4) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. In the third Fe site, Fe(3) is bonded to one O(11), one O(16), one O(17), one O(5), and two equivalent O(1) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. In the fourth Fe site, Fe(4) is bonded to one O(10), one O(13), one O(19), one O(7), and two equivalent O(3) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedra are not tilted. There are twenty inequivalent O sites. In the first O site, O(1) is bonded to one Na(1), one Na(12), one Na(13), one Na(7), and two equivalent Fe(3) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded to one Na(11), one Na(14), one Na(2), one Na(8), and two equivalent Fe(1) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the third O site, O(3) is bonded to one Na(15), one Na(3), one Na(6), one Na(9), and two equivalent Fe(4) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the fourth O site, O(4) is bonded to one Na(10), one Na(16), one Na(4), one Na(5), and two equivalent Fe(2) atoms to form corner-sharing ONa4Fe2 octahedra. The corner-sharing octahedra are not tilted. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Na(15), one Na(5), one Na(9), two equivalent Na(1), and one Fe(3) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Na(10), one Na(16), one Na(6), two equivalent Na(2), and one Fe(1) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Na(11), one Na(14), one Na(7), two equivalent Na(3), and one Fe(4) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Na(12), one Na(13), one Na(8), two equivalent Na(4), and one Fe(2) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Na(1), one Na(12), one Na(13), two equivalent Na(5), and one Fe(2) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Na(11), one Na(14), one Na(2), two equivalent Na(6), and one Fe(4) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Na(15), one Na(3), one Na(9), two equivalent Na(7), and one Fe(3) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Na(10), one Na(16), one Na(4), two equivalent Na(8), and one Fe(1) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Na(1), one Na(13), one Na(7), two equivalent Na(9), and one Fe(4) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Na(14), one Na(2), one Na(8), two equivalent Na(10), and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one Na(15), one Na(3), one Na(6), two equivalent Na(11), and one Fe(1) atom. In the sixteenth O site, O(16) is bonded in a 6-coordinate geometry to one Na(16), one Na(4), one Na(5), two equivalent Na(12), and one Fe(3) atom. In the seventeenth O site, O(17) is bonded in a 6-coordinate geometry to one Na(4), one Na(5), one Na(9), two equivalent Na(13), and one Fe(3) atom. In the eighteenth O site, O(18) is bonded in a 6-coordinate geometry to one Na(10), one Na(3), one Na(6), two equivalent Na(14), and one Fe(1) atom. In the nineteenth O site, O(19) is bonded in a 6-coordinate geometry to one Na(1), one Na(11), one Na(7), two equivalent Na(15), and one Fe(4) atom. In the twentieth O site, O(20) is bonded in a 6-coordinate geometry to one Na(12), one Na(2), one Na(8), two equivalent Na(16), and one Fe(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na4FeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.571
_cell_length_b   5.741
_cell_length_c   5.745
_cell_angle_alpha   80.810
_cell_angle_beta   66.558
_cell_angle_gamma   66.540
_symmetry_Int_Tables_number   1
_cell_volume   126.885
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Fe  Fe0  1  1.000  0.000  0.000  1.0
  Na  Na1  1  0.209  0.186  0.396  1.0
  Na  Na2  1  0.606  0.603  0.186  1.0
  Na  Na3  1  0.395  0.397  0.814  1.0
  Na  Na4  1  0.791  0.814  0.603  1.0
  O  O5  1  0.500  1.000  0.000  1.0
  O  O6  1  0.762  0.172  0.305  1.0
  O  O7  1  0.067  0.695  0.172  1.0
  O  O8  1  0.934  0.305  0.827  1.0
  O  O9  1  0.238  0.828  0.695  1.0
[/CIF]
.