The crystal structure described by Rb6Fe2O5 crystallizes in the monoclinic Cm space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted edge-sharing RbO4 trigonal pyramids. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. In the fourth Rb site, Rb(4) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two 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(3) and two equivalent O(1) atoms. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(3) and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(2), and one Fe(1) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(2), and one Fe(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Rb(4), two equivalent Rb(2), one Fe(1), and one Fe(2) atom. is represented by the CIF card [CIF]
data_Rb6Fe2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.871
_cell_length_b   6.871
_cell_length_c   6.948
_cell_angle_alpha   92.955
_cell_angle_beta   92.955
_cell_angle_gamma   116.649
_symmetry_Int_Tables_number   1
_cell_volume   291.759
_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
  Rb  Rb0  1  0.205  0.793  0.995  1.0
  Rb  Rb1  1  0.246  0.755  0.500  1.0
  Rb  Rb2  1  0.361  0.361  0.171  1.0
  Rb  Rb3  1  0.647  0.647  0.824  1.0
  Rb  Rb4  1  0.755  0.246  0.500  1.0
  Rb  Rb5  1  0.793  0.205  0.995  1.0
  Fe  Fe6  1  0.188  0.188  0.690  1.0
  Fe  Fe7  1  0.797  0.797  0.331  1.0
  O  O8  1  0.165  0.435  0.771  1.0
  O  O9  1  0.571  0.841  0.222  1.0
  O  O10  1  0.435  0.165  0.771  1.0
  O  O11  1  0.936  0.936  0.579  1.0
  O  O12  1  0.841  0.571  0.222  1.0
[/CIF]
.
The crystal structure described by Rb6Fe2O5 crystallizes in the monoclinic Cm space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted edge-sharing RbO4 trigonal pyramids. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. In the fourth Rb site, Rb(4) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two 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(3) and two equivalent O(1) atoms. In the second Fe site, Fe(2) is bonded in a trigonal planar geometry to one O(3) and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(2), and one Fe(1) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Rb(3), one Rb(4), two equivalent Rb(1), two equivalent Rb(2), and one Fe(2) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Rb(4), two equivalent Rb(2), one Fe(1), and one Fe(2) atom. is represented by the CIF card [CIF]
data_Rb6Fe2O5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.871
_cell_length_b   6.871
_cell_length_c   6.948
_cell_angle_alpha   92.955
_cell_angle_beta   92.955
_cell_angle_gamma   116.649
_symmetry_Int_Tables_number   1
_cell_volume   291.759
_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
  Rb  Rb0  1  0.205  0.793  0.995  1.0
  Rb  Rb1  1  0.246  0.755  0.500  1.0
  Rb  Rb2  1  0.361  0.361  0.171  1.0
  Rb  Rb3  1  0.647  0.647  0.824  1.0
  Rb  Rb4  1  0.755  0.246  0.500  1.0
  Rb  Rb5  1  0.793  0.205  0.995  1.0
  Fe  Fe6  1  0.188  0.188  0.690  1.0
  Fe  Fe7  1  0.797  0.797  0.331  1.0
  O  O8  1  0.165  0.435  0.771  1.0
  O  O9  1  0.571  0.841  0.222  1.0
  O  O10  1  0.435  0.165  0.771  1.0
  O  O11  1  0.936  0.936  0.579  1.0
  O  O12  1  0.841  0.571  0.222  1.0
[/CIF]
.