data_Na2MgPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.86
_cell_length_b   10.86
_cell_length_c   10.86
_cell_angle_alpha   15.95
_cell_angle_beta   15.95
_cell_angle_gamma   15.95
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2MgPt
_chemical_formula_sum   'Na2 Mg1 Pt1'
_cell_volume   84.32
_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
  Na  Na1  1  0.0  0.0  0.71  1.0
  Na  Na2  1  0.0  0.0  0.44  1.0
  Mg  Mg0  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.0  0.0  0.08  1.0

data_Na2MgPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.22
_cell_length_b   3.01
_cell_length_c   10.86
_cell_angle_alpha   90.0
_cell_angle_beta   99.22
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na2MgPt
_chemical_formula_sum   'Na4 Mg2 Pt2'
_cell_volume   168.65
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Na  Na0  2  0.0  0.0  0.29  1.0
  Na  Na1  2  0.0  0.0  0.56  1.0
  Mg  Mg2  2  0.0  0.0  0.0  1.0
  Pt  Pt3  2  0.0  0.0  0.92  1.0

Na Na Mg Pt