data_Sr2MgPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.71
_cell_length_b   3.71
_cell_length_c   9.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2MgPt
_chemical_formula_sum   'Sr2 Mg1 Pt1'
_cell_volume   124.24
_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
  Sr  Sr2  1  0.0  0.0  0.26  1.0
  Sr  Sr3  1  0.85  0.85  0.87  1.0
  Mg  Mg0  1  0.0  0.0  0.22  1.0
  Pt  Pt1  1  0.85  0.85  0.22  1.0

data_Sr2MgPt
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.25
_cell_length_b   5.25
_cell_length_c   9.03
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr2MgPt
_chemical_formula_sum   'Sr4 Mg2 Pt2'
_cell_volume   248.49
_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
  Sr  Sr0  2  0.0  0.0  0.26  1.0
  Sr  Sr1  2  0.35  0.5  0.87  1.0
  Mg  Mg2  2  0.0  0.0  0.22  1.0
  Pt  Pt3  2  0.35  0.5  0.22  1.0

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