The compound described by KNa2FeO3 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 4-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(3) atoms. Na(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. Fe(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing FeO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), four equivalent Na(1), and one Fe(1) atom. In the second O site, O(2) is bonded to two equivalent K(1), two equivalent Na(1), and two equivalent Fe(1) atoms to form edge-sharing OK2Na2Fe2 octahedra. In the third O site, O(3) is bonded in a 7-coordinate geometry to two equivalent K(1), four equivalent Na(1), and one Fe(1) atom. is represented by the CIF file [CIF]
data_KNa2FeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.370
_cell_length_b   6.624
_cell_length_c   10.323
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   435.597
_cell_formula_units_Z   4
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
  K  K0  1  0.750  0.162  0.525  1.0
  K  K1  1  0.250  0.838  0.475  1.0
  K  K2  1  0.750  0.662  0.975  1.0
  K  K3  1  0.250  0.338  0.025  1.0
  Na  Na4  1  0.506  0.507  0.270  1.0
  Na  Na5  1  0.006  0.493  0.730  1.0
  Na  Na6  1  0.994  0.007  0.230  1.0
  Na  Na7  1  0.494  0.993  0.770  1.0
  Na  Na8  1  0.494  0.493  0.730  1.0
  Na  Na9  1  0.994  0.507  0.270  1.0
  Na  Na10  1  0.006  0.993  0.770  1.0
  Na  Na11  1  0.506  0.007  0.230  1.0
  Fe  Fe12  1  0.750  0.670  0.508  1.0
  Fe  Fe13  1  0.250  0.330  0.492  1.0
  Fe  Fe14  1  0.750  0.170  0.992  1.0
  Fe  Fe15  1  0.250  0.830  0.008  1.0
  O  O16  1  0.750  0.333  0.141  1.0
  O  O17  1  0.250  0.667  0.859  1.0
  O  O18  1  0.750  0.833  0.359  1.0
  O  O19  1  0.250  0.167  0.641  1.0
  O  O20  1  0.500  0.500  0.500  1.0
  O  O21  1  0.000  0.500  0.500  1.0
  O  O22  1  0.000  0.000  0.000  1.0
  O  O23  1  0.500  0.000  0.000  1.0
  O  O24  1  0.750  0.794  0.671  1.0
  O  O25  1  0.250  0.206  0.329  1.0
  O  O26  1  0.750  0.294  0.829  1.0
  O  O27  1  0.250  0.706  0.171  1.0
[/CIF]
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The compound described by KNa2FeO3 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 4-coordinate geometry to one O(1), two equivalent O(2), and two equivalent O(3) atoms. Na(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. Fe(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form corner-sharing FeO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), four equivalent Na(1), and one Fe(1) atom. In the second O site, O(2) is bonded to two equivalent K(1), two equivalent Na(1), and two equivalent Fe(1) atoms to form edge-sharing OK2Na2Fe2 octahedra. In the third O site, O(3) is bonded in a 7-coordinate geometry to two equivalent K(1), four equivalent Na(1), and one Fe(1) atom. is represented by the CIF file [CIF]
data_KNa2FeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.370
_cell_length_b   6.624
_cell_length_c   10.323
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   435.597
_cell_formula_units_Z   4
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
  K  K0  1  0.750  0.162  0.525  1.0
  K  K1  1  0.250  0.838  0.475  1.0
  K  K2  1  0.750  0.662  0.975  1.0
  K  K3  1  0.250  0.338  0.025  1.0
  Na  Na4  1  0.506  0.507  0.270  1.0
  Na  Na5  1  0.006  0.493  0.730  1.0
  Na  Na6  1  0.994  0.007  0.230  1.0
  Na  Na7  1  0.494  0.993  0.770  1.0
  Na  Na8  1  0.494  0.493  0.730  1.0
  Na  Na9  1  0.994  0.507  0.270  1.0
  Na  Na10  1  0.006  0.993  0.770  1.0
  Na  Na11  1  0.506  0.007  0.230  1.0
  Fe  Fe12  1  0.750  0.670  0.508  1.0
  Fe  Fe13  1  0.250  0.330  0.492  1.0
  Fe  Fe14  1  0.750  0.170  0.992  1.0
  Fe  Fe15  1  0.250  0.830  0.008  1.0
  O  O16  1  0.750  0.333  0.141  1.0
  O  O17  1  0.250  0.667  0.859  1.0
  O  O18  1  0.750  0.833  0.359  1.0
  O  O19  1  0.250  0.167  0.641  1.0
  O  O20  1  0.500  0.500  0.500  1.0
  O  O21  1  0.000  0.500  0.500  1.0
  O  O22  1  0.000  0.000  0.000  1.0
  O  O23  1  0.500  0.000  0.000  1.0
  O  O24  1  0.750  0.794  0.671  1.0
  O  O25  1  0.250  0.206  0.329  1.0
  O  O26  1  0.750  0.294  0.829  1.0
  O  O27  1  0.250  0.706  0.171  1.0
[/CIF]
.