The structure described by Na2FeO3 crystallizes in the orthorhombic Cmc2_1 space group. Na(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted NaO5 trigonal bipyramids that share corners with four equivalent Fe(1)O4 tetrahedra, corners with five equivalent Na(1)O5 trigonal bipyramids,  an edgeedge with one Fe(1)O4 tetrahedra, and edges with four equivalent Na(1)O5 trigonal bipyramids. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with two equivalent Fe(1)O4 tetrahedra, corners with eight equivalent Na(1)O5 trigonal bipyramids, and edges with two equivalent Na(1)O5 trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Na(1) and one Fe(1) atom to form distorted ONa4Fe trigonal bipyramids that share corners with four equivalent O(2)Na2Fe2 tetrahedra, corners with five equivalent O(1)Na4Fe trigonal bipyramids,  an edgeedge with one O(2)Na2Fe2 tetrahedra, and edges with four equivalent O(1)Na4Fe trigonal bipyramids. In the second O site, O(2) is bonded to two equivalent Na(1) and two equivalent Fe(1) atoms to form ONa2Fe2 tetrahedra that share corners with two equivalent O(2)Na2Fe2 tetrahedra, corners with eight equivalent O(1)Na4Fe trigonal bipyramids, and edges with two equivalent O(1)Na4Fe trigonal bipyramids. is represented by the CIF card [CIF]
data_Na2FeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.150
_cell_length_b   6.453
_cell_length_c   5.100
_cell_angle_alpha   90.001
_cell_angle_beta   90.002
_cell_angle_gamma   61.541
_symmetry_Int_Tables_number   1
_cell_volume   177.964
_cell_formula_units_Z   2
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
  Na  Na0  1  0.839  0.669  0.512  1.0
  Na  Na1  1  0.492  0.669  0.012  1.0
  Na  Na2  1  0.508  0.331  0.512  1.0
  Na  Na3  1  0.161  0.331  0.012  1.0
  Fe  Fe4  1  0.827  0.000  0.047  1.0
  Fe  Fe5  1  0.173  0.000  0.547  1.0
  O  O6  1  0.847  0.719  0.991  1.0
  O  O7  1  0.434  0.719  0.491  1.0
  O  O8  1  0.566  0.281  0.991  1.0
  O  O9  1  0.153  0.281  0.491  1.0
  O  O10  1  0.885  0.000  0.404  1.0
  O  O11  1  0.115  0.000  0.904  1.0
[/CIF]
.
The structure described by Na2FeO3 crystallizes in the orthorhombic Cmc2_1 space group. Na(1) is bonded to one O(2) and four equivalent O(1) atoms to form distorted NaO5 trigonal bipyramids that share corners with four equivalent Fe(1)O4 tetrahedra, corners with five equivalent Na(1)O5 trigonal bipyramids,  an edgeedge with one Fe(1)O4 tetrahedra, and edges with four equivalent Na(1)O5 trigonal bipyramids. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form FeO4 tetrahedra that share corners with two equivalent Fe(1)O4 tetrahedra, corners with eight equivalent Na(1)O5 trigonal bipyramids, and edges with two equivalent Na(1)O5 trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Na(1) and one Fe(1) atom to form distorted ONa4Fe trigonal bipyramids that share corners with four equivalent O(2)Na2Fe2 tetrahedra, corners with five equivalent O(1)Na4Fe trigonal bipyramids,  an edgeedge with one O(2)Na2Fe2 tetrahedra, and edges with four equivalent O(1)Na4Fe trigonal bipyramids. In the second O site, O(2) is bonded to two equivalent Na(1) and two equivalent Fe(1) atoms to form ONa2Fe2 tetrahedra that share corners with two equivalent O(2)Na2Fe2 tetrahedra, corners with eight equivalent O(1)Na4Fe trigonal bipyramids, and edges with two equivalent O(1)Na4Fe trigonal bipyramids. is represented by the CIF card [CIF]
data_Na2FeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.150
_cell_length_b   6.453
_cell_length_c   5.100
_cell_angle_alpha   90.001
_cell_angle_beta   90.002
_cell_angle_gamma   61.541
_symmetry_Int_Tables_number   1
_cell_volume   177.964
_cell_formula_units_Z   2
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
  Na  Na0  1  0.839  0.669  0.512  1.0
  Na  Na1  1  0.492  0.669  0.012  1.0
  Na  Na2  1  0.508  0.331  0.512  1.0
  Na  Na3  1  0.161  0.331  0.012  1.0
  Fe  Fe4  1  0.827  0.000  0.047  1.0
  Fe  Fe5  1  0.173  0.000  0.547  1.0
  O  O6  1  0.847  0.719  0.991  1.0
  O  O7  1  0.434  0.719  0.491  1.0
  O  O8  1  0.566  0.281  0.991  1.0
  O  O9  1  0.153  0.281  0.491  1.0
  O  O10  1  0.885  0.000  0.404  1.0
  O  O11  1  0.115  0.000  0.904  1.0
[/CIF]
.