The compound described by MgYb(FeO2)2 crystallizes in the trigonal R-3m space group. Mg(1) is bonded to six equivalent O(1) atoms to form edge-sharing MgO6 octahedra. Yb(1) is bonded to six equivalent O(2) atoms to form edge-sharing YbO6 octahedra. Fe(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2) and three equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Mg(1) and three equivalent Fe(1) atoms to form a mixture of corner and edge-sharing OMg3Fe3 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Yb(1) and one Fe(1) atom. is represented by the CIF file [CIF]
data_YbMg(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.267
_cell_length_b   11.267
_cell_length_c   11.267
_cell_angle_alpha   16.337
_cell_angle_beta   16.337
_cell_angle_gamma   16.337
_symmetry_Int_Tables_number   1
_cell_volume   98.680
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Mg  Mg1  1  0.500  0.500  0.500  1.0
  Fe  Fe2  1  0.760  0.760  0.760  1.0
  Fe  Fe3  1  0.240  0.240  0.240  1.0
  O  O4  1  0.868  0.868  0.868  1.0
  O  O5  1  0.132  0.132  0.132  1.0
  O  O6  1  0.705  0.705  0.705  1.0
  O  O7  1  0.295  0.295  0.295  1.0
[/CIF]
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The compound described by MgYb(FeO2)2 crystallizes in the trigonal R-3m space group. Mg(1) is bonded to six equivalent O(1) atoms to form edge-sharing MgO6 octahedra. Yb(1) is bonded to six equivalent O(2) atoms to form edge-sharing YbO6 octahedra. Fe(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2) and three equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to three equivalent Mg(1) and three equivalent Fe(1) atoms to form a mixture of corner and edge-sharing OMg3Fe3 octahedra. The corner-sharing octahedra are not tilted. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to three equivalent Yb(1) and one Fe(1) atom. is represented by the CIF file [CIF]
data_YbMg(FeO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.267
_cell_length_b   11.267
_cell_length_c   11.267
_cell_angle_alpha   16.337
_cell_angle_beta   16.337
_cell_angle_gamma   16.337
_symmetry_Int_Tables_number   1
_cell_volume   98.680
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Mg  Mg1  1  0.500  0.500  0.500  1.0
  Fe  Fe2  1  0.760  0.760  0.760  1.0
  Fe  Fe3  1  0.240  0.240  0.240  1.0
  O  O4  1  0.868  0.868  0.868  1.0
  O  O5  1  0.132  0.132  0.132  1.0
  O  O6  1  0.705  0.705  0.705  1.0
  O  O7  1  0.295  0.295  0.295  1.0
[/CIF]
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