data_[Mg1Sn1Pb1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Sn  1.9600  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P3m1]
_cell_length_a [5.2237]
_cell_length_b [5.2237]
_cell_length_c [3.4897]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [156]
_chemical_formula_structural [MgSnPb]
_chemical_formula_sum '[Mg1 Sn1 Pb1]'
_cell_volume [82.4675]
_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  0.3333  0.6667  0.7666  1
  Sn  Sn1  1  0.0000  0.0000  0.9183  1
  Pb  Pb2  1  0.6667  0.3333  0.3151  1
]