data_[Mg4Bi4O10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pbam]
_cell_length_a [6.5311]
_cell_length_b [10.7156]
_cell_length_c [4.0620]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [Mg2Bi2O5]
_chemical_formula_sum '[Mg4 Bi4 O10]'
_cell_volume [284.2776]
_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  4  0.1315  0.4019  0.5000  1
  Bi  Bi1  4  0.1980  0.1220  0.0000  1
  O  O2  4  0.1780  0.6011  0.5000  1
  O  O3  4  0.2222  0.8142  0.0000  1
  O  O4  2  0.0000  0.5000  0.0000  1
]