data_SrC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.81
_cell_length_b   2.92
_cell_length_c   7.54
_cell_angle_alpha   90.0
_cell_angle_beta   102.1
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrC
_chemical_formula_sum   'Sr2 C2'
_cell_volume   82.02
_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
  Sr  Sr2  1  0.38  0.73  0.54  1.0
  Sr  Sr3  1  0.85  0.19  0.83  1.0
  C  C0  1  0.06  0.73  0.34  1.0
  C  C1  1  0.16  0.19  0.03  1.0

data_SrC
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.92
_cell_length_b   3.81
_cell_length_c   7.54
_cell_angle_alpha   102.1
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   SrC
_chemical_formula_sum   'Sr2 C2'
_cell_volume   82.02
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  Sr0  2  0.23  0.24  0.14  1.0
  C  C1  2  0.23  0.55  0.34  1.0

Sr Sr C C