The crystal structure described by Rb2Fe2O3 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to three equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Rb(1), three equivalent Rb(2), one Fe(1), and one Fe(2) atom to form a mixture of distorted edge and corner-sharing ORb4Fe2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Fe(1), and one Fe(2) atom. is represented by the CIF card [CIF]
data_Rb2Fe2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.371
_cell_length_b   8.232
_cell_length_c   12.097
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   634.450
_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
  Rb  Rb0  1  0.250  0.877  0.058  1.0
  Rb  Rb1  1  0.750  0.503  0.121  1.0
  Rb  Rb2  1  0.250  0.003  0.379  1.0
  Rb  Rb3  1  0.750  0.377  0.442  1.0
  Rb  Rb4  1  0.250  0.623  0.558  1.0
  Rb  Rb5  1  0.750  0.997  0.621  1.0
  Rb  Rb6  1  0.250  0.497  0.879  1.0
  Rb  Rb7  1  0.750  0.123  0.942  1.0
  Fe  Fe8  1  0.250  0.280  0.145  1.0
  Fe  Fe9  1  0.750  0.098  0.227  1.0
  Fe  Fe10  1  0.250  0.598  0.273  1.0
  Fe  Fe11  1  0.750  0.780  0.355  1.0
  Fe  Fe12  1  0.250  0.220  0.645  1.0
  Fe  Fe13  1  0.750  0.402  0.727  1.0
  Fe  Fe14  1  0.250  0.902  0.773  1.0
  Fe  Fe15  1  0.750  0.720  0.855  1.0
  O  O16  1  0.250  0.514  0.124  1.0
  O  O17  1  0.999  0.152  0.146  1.0
  O  O18  1  0.501  0.152  0.146  1.0
  O  O19  1  0.001  0.652  0.354  1.0
  O  O20  1  0.499  0.652  0.354  1.0
  O  O21  1  0.750  0.014  0.376  1.0
  O  O22  1  0.250  0.986  0.624  1.0
  O  O23  1  0.999  0.348  0.646  1.0
  O  O24  1  0.501  0.348  0.646  1.0
  O  O25  1  0.499  0.848  0.854  1.0
  O  O26  1  0.001  0.848  0.854  1.0
  O  O27  1  0.750  0.486  0.876  1.0
[/CIF]
.
The crystal structure described by Rb2Fe2O3 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to three equivalent O(1) and four equivalent O(2) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Rb(1), three equivalent Rb(2), one Fe(1), and one Fe(2) atom to form a mixture of distorted edge and corner-sharing ORb4Fe2 octahedra. The corner-sharing octahedral tilt angles are 3°. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Fe(1), and one Fe(2) atom. is represented by the CIF card [CIF]
data_Rb2Fe2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.371
_cell_length_b   8.232
_cell_length_c   12.097
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   634.450
_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
  Rb  Rb0  1  0.250  0.877  0.058  1.0
  Rb  Rb1  1  0.750  0.503  0.121  1.0
  Rb  Rb2  1  0.250  0.003  0.379  1.0
  Rb  Rb3  1  0.750  0.377  0.442  1.0
  Rb  Rb4  1  0.250  0.623  0.558  1.0
  Rb  Rb5  1  0.750  0.997  0.621  1.0
  Rb  Rb6  1  0.250  0.497  0.879  1.0
  Rb  Rb7  1  0.750  0.123  0.942  1.0
  Fe  Fe8  1  0.250  0.280  0.145  1.0
  Fe  Fe9  1  0.750  0.098  0.227  1.0
  Fe  Fe10  1  0.250  0.598  0.273  1.0
  Fe  Fe11  1  0.750  0.780  0.355  1.0
  Fe  Fe12  1  0.250  0.220  0.645  1.0
  Fe  Fe13  1  0.750  0.402  0.727  1.0
  Fe  Fe14  1  0.250  0.902  0.773  1.0
  Fe  Fe15  1  0.750  0.720  0.855  1.0
  O  O16  1  0.250  0.514  0.124  1.0
  O  O17  1  0.999  0.152  0.146  1.0
  O  O18  1  0.501  0.152  0.146  1.0
  O  O19  1  0.001  0.652  0.354  1.0
  O  O20  1  0.499  0.652  0.354  1.0
  O  O21  1  0.750  0.014  0.376  1.0
  O  O22  1  0.250  0.986  0.624  1.0
  O  O23  1  0.999  0.348  0.646  1.0
  O  O24  1  0.501  0.348  0.646  1.0
  O  O25  1  0.499  0.848  0.854  1.0
  O  O26  1  0.001  0.848  0.854  1.0
  O  O27  1  0.750  0.486  0.876  1.0
[/CIF]
.