data_[Mg4U2Pb2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  U  1.3800  1.7500  0.9913
  Pb  2.3300  1.8000  1.1225
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [6.6216]
_cell_length_b [6.6216]
_cell_length_c [7.3919]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [Mg2UPbO8]
_chemical_formula_sum '[Mg4 U2 Pb2 O16]'
_cell_volume [324.1030]
_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  2  0.0000  0.0000  0.5000  1
  Mg  Mg1  2  0.0000  0.5000  0.7500  1
  U  U2  2  0.0000  0.0000  0.0000  1
  Pb  Pb3  2  0.0000  0.5000  0.2500  1
  O  O4  8  0.0000  0.1802  0.2894  1
  O  O5  8  0.0000  0.3000  0.9497  1
]