data_SrC
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.75
_cell_length_b   7.75
_cell_length_c   7.75
_cell_angle_alpha   158.74
_cell_angle_beta   152.52
_cell_angle_gamma   35.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrC
_chemical_formula_sum   'Sr2 C2'
_cell_volume   77.75
_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  0.0  0.76  0.91  1.0
  Sr  Sr3  1  0.43  0.08  0.48  1.0
  C  C0  1  0.43  0.92  0.34  1.0
  C  C1  1  0.0  0.92  0.05  1.0

data_SrC
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.86
_cell_length_b   3.68
_cell_length_c   7.75
_cell_angle_alpha   103.74
_cell_angle_beta   100.63
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   SrC
_chemical_formula_sum   'Sr2 C2'
_cell_volume   77.75
_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  0.16  0.88  0.09  1.0
  C  C1  2  0.0  0.85  0.07  1.0

Sr Sr C C
Sr Sr C C 0 3 o o + 1 2 o - o 