data_[Rb4Mg2Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Mg  1.3100  1.5000  0.8600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.3622]
_cell_length_b [6.7907]
_cell_length_c [7.4108]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.2676]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Rb2MgPb]
_chemical_formula_sum '[Rb4 Mg2 Pb2]'
_cell_volume [359.0689]
_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
[
  Rb  Rb0  4  0.0330  0.2500  0.6896  1
  Mg  Mg1  2  0.5000  0.0000  0.5000  1
  Pb  Pb2  2  0.2468  0.2500  0.2436  1
]