The crystal structure described by Rb2Mg(FeO2)2 crystallizes in the monoclinic C2/m space group. Rb(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. Mg(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Fe(1) is bonded in a distorted 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 in a 3-coordinate geometry to three equivalent Rb(1), two equivalent Mg(1), and one Fe(1) atom. In the second O site, O(2) is bonded to three equivalent Rb(1) and two equivalent Fe(1) atoms to form a mixture of distorted corner and edge-sharing ORb3Fe2 trigonal bipyramids. is represented by the CIF file [CIF]
data_Rb2Mg(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.838
_cell_length_b   6.838
_cell_length_c   7.568
_cell_angle_alpha   101.100
_cell_angle_beta   101.100
_cell_angle_gamma   28.478
_symmetry_Int_Tables_number   1
_cell_volume   165.354
_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  0.255  0.255  0.268  1.0
  Rb  Rb1  1  0.745  0.745  0.732  1.0
  Mg  Mg2  1  0.500  0.500  0.000  1.0
  Fe  Fe3  1  0.980  0.980  0.324  1.0
  Fe  Fe4  1  0.020  0.020  0.676  1.0
  O  O5  1  0.082  0.082  0.926  1.0
  O  O6  1  0.108  0.108  0.495  1.0
  O  O7  1  0.918  0.918  0.074  1.0
  O  O8  1  0.892  0.892  0.505  1.0
[/CIF]
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The crystal structure described by Rb2Mg(FeO2)2 crystallizes in the monoclinic C2/m space group. Rb(1) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. Mg(1) is bonded in a distorted square co-planar geometry to four equivalent O(1) atoms. Fe(1) is bonded in a distorted 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 in a 3-coordinate geometry to three equivalent Rb(1), two equivalent Mg(1), and one Fe(1) atom. In the second O site, O(2) is bonded to three equivalent Rb(1) and two equivalent Fe(1) atoms to form a mixture of distorted corner and edge-sharing ORb3Fe2 trigonal bipyramids. is represented by the CIF file [CIF]
data_Rb2Mg(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.838
_cell_length_b   6.838
_cell_length_c   7.568
_cell_angle_alpha   101.100
_cell_angle_beta   101.100
_cell_angle_gamma   28.478
_symmetry_Int_Tables_number   1
_cell_volume   165.354
_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  0.255  0.255  0.268  1.0
  Rb  Rb1  1  0.745  0.745  0.732  1.0
  Mg  Mg2  1  0.500  0.500  0.000  1.0
  Fe  Fe3  1  0.980  0.980  0.324  1.0
  Fe  Fe4  1  0.020  0.020  0.676  1.0
  O  O5  1  0.082  0.082  0.926  1.0
  O  O6  1  0.108  0.108  0.495  1.0
  O  O7  1  0.918  0.918  0.074  1.0
  O  O8  1  0.892  0.892  0.505  1.0
[/CIF]
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