data_Ba2MgPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.61
_cell_length_b   5.61
_cell_length_c   4.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ba2MgPt
_chemical_formula_sum   'Ba2 Mg1 Pt1'
_cell_volume   132.49
_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
  Ba  Ba0  1  0.8  0.0  0.11  1.0
  Ba  Ba1  1  0.0  0.8  0.11  1.0
  Mg  Mg2  1  0.0  0.0  0.0  1.0
  Pt  Pt3  1  0.8  0.8  0.0  1.0

data_Ba2MgPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.93
_cell_length_b   7.93
_cell_length_c   4.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ba2MgPt
_chemical_formula_sum   'Ba4 Mg2 Pt2'
_cell_volume   264.98
_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
  Ba  Ba0  4  0.4  0.4  0.11  1.0
  Mg  Mg1  2  0.0  0.0  0.0  1.0
  Pt  Pt2  2  0.3  0.5  0.0  1.0

Ba Ba Mg Pt
Ba Ba Mg Pt 0 3 o - o 0 2 + o o 1 3 - o o 1 2 o + o 