data_SrC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.54
_cell_length_b   8.54
_cell_length_c   8.54
_cell_angle_alpha   153.12
_cell_angle_beta   153.12
_cell_angle_gamma   38.38
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrC2
_chemical_formula_sum   'Sr2 C4'
_cell_volume   126.94
_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  Sr4  1  0.0  0.98  0.03  1.0
  Sr  Sr5  1  0.0  0.0  0.0  1.0
  C  C0  1  0.98  0.0  0.66  1.0
  C  C1  1  0.0  0.0  0.43  1.0
  C  C2  1  0.98  0.0  0.4  1.0
  C  C3  1  0.0  0.0  0.69  1.0

data_SrC2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.97
_cell_length_b   3.97
_cell_length_c   8.54
_cell_angle_alpha   103.44
_cell_angle_beta   103.44
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrC2
_chemical_formula_sum   'Sr2 C4'
_cell_volume   126.94
_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  Sr0  1  0.0  0.0  0.0  1.0
  Sr  Sr1  1  0.05  0.03  0.05  1.0
  C  C2  1  0.4  0.41  0.41  1.0
  C  C3  1  0.43  0.43  0.43  1.0
  C  C4  1  0.66  0.68  0.68  1.0
  C  C5  1  0.69  0.69  0.69  1.0

Sr Sr C C C C
Sr Sr C C C C 0 1 o + o 2 5 + o o 3 4 - o o 