The structure described by Rb3FeO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form edge-sharing FeO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(3), two equivalent Rb(2), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 7-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Rb(3), and one Fe(1) atom. is represented by the CIF card [CIF]
data_Rb3FeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.786
_cell_length_b   6.831
_cell_length_c   6.830
_cell_angle_alpha   114.140
_cell_angle_beta   97.619
_cell_angle_gamma   97.625
_symmetry_Int_Tables_number   1
_cell_volume   280.175
_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
  Fe  Fe0  1  0.144  0.162  0.162  1.0
  Fe  Fe1  1  0.856  0.838  0.838  1.0
  O  O2  1  0.848  0.098  0.098  1.0
  O  O3  1  0.152  0.902  0.902  1.0
  O  O4  1  0.735  0.849  0.584  1.0
  O  O5  1  0.265  0.151  0.416  1.0
  O  O6  1  0.735  0.584  0.849  1.0
  O  O7  1  0.265  0.416  0.151  1.0
  Rb  Rb8  1  1.000  0.265  0.735  1.0
  Rb  Rb9  1  0.000  0.735  0.265  1.0
  Rb  Rb10  1  0.500  0.188  0.811  1.0
  Rb  Rb11  1  0.500  0.812  0.189  1.0
  Rb  Rb12  1  0.653  0.374  0.374  1.0
  Rb  Rb13  1  0.347  0.626  0.626  1.0
[/CIF]
.
The structure described by Rb3FeO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. Fe(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form edge-sharing FeO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(3), two equivalent Rb(2), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 7-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), two equivalent Rb(3), and one Fe(1) atom. is represented by the CIF card [CIF]
data_Rb3FeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.786
_cell_length_b   6.831
_cell_length_c   6.830
_cell_angle_alpha   114.140
_cell_angle_beta   97.619
_cell_angle_gamma   97.625
_symmetry_Int_Tables_number   1
_cell_volume   280.175
_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
  Fe  Fe0  1  0.144  0.162  0.162  1.0
  Fe  Fe1  1  0.856  0.838  0.838  1.0
  O  O2  1  0.848  0.098  0.098  1.0
  O  O3  1  0.152  0.902  0.902  1.0
  O  O4  1  0.735  0.849  0.584  1.0
  O  O5  1  0.265  0.151  0.416  1.0
  O  O6  1  0.735  0.584  0.849  1.0
  O  O7  1  0.265  0.416  0.151  1.0
  Rb  Rb8  1  1.000  0.265  0.735  1.0
  Rb  Rb9  1  0.000  0.735  0.265  1.0
  Rb  Rb10  1  0.500  0.188  0.811  1.0
  Rb  Rb11  1  0.500  0.812  0.189  1.0
  Rb  Rb12  1  0.653  0.374  0.374  1.0
  Rb  Rb13  1  0.347  0.626  0.626  1.0
[/CIF]
.