The crystal structure described by Bi2MgO4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to four equivalent O(1) atoms to form MgO4 tetrahedra that share corners with twelve equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share corners with six equivalent Mg(1)O4 tetrahedra and edges with six equivalent Bi(1)O6 octahedra. O(1) is bonded in a rectangular see-saw-like geometry to one Mg(1) and three equivalent Bi(1) atoms. is represented by the CIF card [CIF]
data_Mg(BiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.834
_cell_length_b   6.834
_cell_length_c   6.834
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   225.680
_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
  Mg  Mg0  1  0.750  0.750  0.750  1.0
  Mg  Mg1  1  0.500  0.500  0.500  1.0
  Bi  Bi2  1  0.125  0.125  0.625  1.0
  Bi  Bi3  1  0.125  0.625  0.125  1.0
  Bi  Bi4  1  0.125  0.125  0.125  1.0
  Bi  Bi5  1  0.625  0.125  0.125  1.0
  O  O6  1  0.376  0.873  0.376  1.0
  O  O7  1  0.376  0.376  0.376  1.0
  O  O8  1  0.873  0.376  0.376  1.0
  O  O9  1  0.874  0.874  0.377  1.0
  O  O10  1  0.377  0.874  0.874  1.0
  O  O11  1  0.874  0.874  0.874  1.0
  O  O12  1  0.376  0.376  0.873  1.0
  O  O13  1  0.874  0.377  0.874  1.0
[/CIF]
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The crystal structure described by Bi2MgO4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to four equivalent O(1) atoms to form MgO4 tetrahedra that share corners with twelve equivalent Bi(1)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share corners with six equivalent Mg(1)O4 tetrahedra and edges with six equivalent Bi(1)O6 octahedra. O(1) is bonded in a rectangular see-saw-like geometry to one Mg(1) and three equivalent Bi(1) atoms. is represented by the CIF card [CIF]
data_Mg(BiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.834
_cell_length_b   6.834
_cell_length_c   6.834
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   225.680
_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
  Mg  Mg0  1  0.750  0.750  0.750  1.0
  Mg  Mg1  1  0.500  0.500  0.500  1.0
  Bi  Bi2  1  0.125  0.125  0.625  1.0
  Bi  Bi3  1  0.125  0.625  0.125  1.0
  Bi  Bi4  1  0.125  0.125  0.125  1.0
  Bi  Bi5  1  0.625  0.125  0.125  1.0
  O  O6  1  0.376  0.873  0.376  1.0
  O  O7  1  0.376  0.376  0.376  1.0
  O  O8  1  0.873  0.376  0.376  1.0
  O  O9  1  0.874  0.874  0.377  1.0
  O  O10  1  0.377  0.874  0.874  1.0
  O  O11  1  0.874  0.874  0.874  1.0
  O  O12  1  0.376  0.376  0.873  1.0
  O  O13  1  0.874  0.377  0.874  1.0
[/CIF]
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