data_MgSn2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.79
_cell_length_b   5.79
_cell_length_c   5.89
_cell_angle_alpha   101.43
_cell_angle_beta   101.43
_cell_angle_gamma   34.54
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgSn2Pb
_chemical_formula_sum   'Mg1 Sn2 Pb1'
_cell_volume   109.52
_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  0.95  0.0  0.93  1.0
  Sn  Sn2  1  0.82  0.0  0.69  1.0
  Sn  Sn3  1  0.8  0.0  0.29  1.0
  Pb  Pb1  1  0.03  0.0  0.49  1.0

data_MgSn2Pb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.44
_cell_length_b   5.79
_cell_length_c   5.89
_cell_angle_alpha   101.43
_cell_angle_beta   90.0
_cell_angle_gamma   107.27
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgSn2Pb
_chemical_formula_sum   'Mg1 Sn2 Pb1'
_cell_volume   109.52
_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  0.0  0.05  0.07  1.0
  Sn  Sn1  1  0.0  0.18  0.31  1.0
  Sn  Sn2  1  0.0  0.2  0.71  1.0
  Pb  Pb3  1  0.0  0.97  0.51  1.0

Mg Sn Sn Pb