data_Pt2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.3
_cell_length_b   10.3
_cell_length_c   10.3
_cell_angle_alpha   164.54
_cell_angle_beta   164.54
_cell_angle_gamma   21.93
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pt2C
_chemical_formula_sum   'Pt4 C2'
_cell_volume   77.57
_cell_formula_units_Z   2
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
  Pt  Pt2  1  0.38  0.0  0.4  1.0
  Pt  Pt3  1  0.0  0.0  0.77  1.0
  Pt  Pt4  1  0.38  0.0  0.71  1.0
  Pt  Pt5  1  0.0  0.0  0.45  1.0
  C  C0  1  0.0  0.38  0.06  1.0
  C  C1  1  0.0  0.0  0.0  1.0

data_Pt2C
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.77
_cell_length_b   2.77
_cell_length_c   10.3
_cell_angle_alpha   97.73
_cell_angle_beta   97.73
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pt2C
_chemical_formula_sum   'Pt4 C2'
_cell_volume   77.57
_cell_formula_units_Z   2
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
  Pt  Pt0  1  0.23  0.0  0.23  1.0
  Pt  Pt1  1  0.29  0.0  0.67  1.0
  Pt  Pt2  1  0.55  0.0  0.55  1.0
  Pt  Pt3  1  0.6  0.0  0.99  1.0
  C  C4  1  0.0  0.0  0.0  1.0
  C  C5  1  0.33  0.38  0.33  1.0

Pt Pt Pt Pt C C
Pt Pt Pt Pt C C 0 5 o o o 1 4 o o + 2 3 o o o 