The material described by MgAg2(BiO3)2 crystallizes in the trigonal R-3 space group. Mg(1) is bonded to six equivalent O(1) atoms to form MgO6 octahedra that share edges with six equivalent Bi(1)O6 octahedra. Ag(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share edges with three equivalent Mg(1)O6 octahedra and edges with three equivalent Bi(1)O6 octahedra. O(1) is bonded to one Mg(1), two equivalent Ag(1), and two equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing OMgAg2Bi2 trigonal bipyramids. is represented by the CIF file [CIF]
data_MgAg2(BiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.709
_cell_length_b   6.709
_cell_length_c   6.709
_cell_angle_alpha   50.863
_cell_angle_beta   50.863
_cell_angle_gamma   50.863
_symmetry_Int_Tables_number   1
_cell_volume   167.505
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Ag  Ag1  1  0.166  0.166  0.166  1.0
  Ag  Ag2  1  0.834  0.834  0.834  1.0
  Bi  Bi3  1  0.351  0.351  0.351  1.0
  Bi  Bi4  1  0.649  0.649  0.649  1.0
  O  O5  1  0.766  0.399  0.032  1.0
  O  O6  1  0.234  0.601  0.968  1.0
  O  O7  1  0.968  0.234  0.601  1.0
  O  O8  1  0.601  0.968  0.234  1.0
  O  O9  1  0.399  0.032  0.766  1.0
  O  O10  1  0.032  0.766  0.399  1.0
[/CIF]
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The material described by MgAg2(BiO3)2 crystallizes in the trigonal R-3 space group. Mg(1) is bonded to six equivalent O(1) atoms to form MgO6 octahedra that share edges with six equivalent Bi(1)O6 octahedra. Ag(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. Bi(1) is bonded to six equivalent O(1) atoms to form BiO6 octahedra that share edges with three equivalent Mg(1)O6 octahedra and edges with three equivalent Bi(1)O6 octahedra. O(1) is bonded to one Mg(1), two equivalent Ag(1), and two equivalent Bi(1) atoms to form a mixture of distorted corner and edge-sharing OMgAg2Bi2 trigonal bipyramids. is represented by the CIF file [CIF]
data_MgAg2(BiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.709
_cell_length_b   6.709
_cell_length_c   6.709
_cell_angle_alpha   50.863
_cell_angle_beta   50.863
_cell_angle_gamma   50.863
_symmetry_Int_Tables_number   1
_cell_volume   167.505
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Ag  Ag1  1  0.166  0.166  0.166  1.0
  Ag  Ag2  1  0.834  0.834  0.834  1.0
  Bi  Bi3  1  0.351  0.351  0.351  1.0
  Bi  Bi4  1  0.649  0.649  0.649  1.0
  O  O5  1  0.766  0.399  0.032  1.0
  O  O6  1  0.234  0.601  0.968  1.0
  O  O7  1  0.968  0.234  0.601  1.0
  O  O8  1  0.601  0.968  0.234  1.0
  O  O9  1  0.399  0.032  0.766  1.0
  O  O10  1  0.032  0.766  0.399  1.0
[/CIF]
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