data_Si3C5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.65
_cell_length_b   5.65
_cell_length_c   5.56
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si3C5
_chemical_formula_sum   'Si6 C10'
_cell_volume   153.67
_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
  Si  Si10  1  0.49  0.62  0.17  1.0
  Si  Si11  1  0.69  0.27  0.39  1.0
  Si  Si12  1  0.31  0.27  0.17  1.0
  Si  Si13  1  0.03  0.0  0.17  1.0
  Si  Si14  1  0.63  0.0  0.39  1.0
  Si  Si15  1  0.51  0.62  0.39  1.0
  C  C0  1  0.83  0.63  0.78  1.0
  C  C1  1  0.0  0.26  0.0  1.0
  C  C2  1  0.0  0.26  0.78  1.0
  C  C3  1  0.83  0.63  0.0  1.0
  C  C4  1  0.58  0.2  0.17  1.0
  C  C5  1  0.6  0.7  0.39  1.0
  C  C6  1  0.4  0.7  0.17  1.0
  C  C7  1  0.85  0.0  0.17  1.0
  C  C8  1  0.8  0.0  0.39  1.0
  C  C9  1  0.42  0.2  0.39  1.0

data_Si3C5
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.56
_cell_length_b   5.65
_cell_length_c   5.65
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si3C5
_chemical_formula_sum   'Si6 C10'
_cell_volume   153.67
_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
  Si  Si0  1  0.17  0.03  0.0  1.0
  Si  Si1  1  0.17  0.31  0.27  1.0
  Si  Si2  1  0.17  0.49  0.62  1.0
  Si  Si3  1  0.39  0.51  0.62  1.0
  Si  Si4  1  0.39  0.63  0.0  1.0
  Si  Si5  1  0.39  0.69  0.27  1.0
  C  C6  1  -0.0  0.83  0.63  1.0
  C  C7  1  -0.0  0.0  0.26  1.0
  C  C8  1  0.17  0.4  0.7  1.0
  C  C9  1  0.17  0.58  0.2  1.0
  C  C10  1  0.17  0.85  0.0  1.0
  C  C11  1  0.39  0.42  0.2  1.0
  C  C12  1  0.39  0.6  0.7  1.0
  C  C13  1  0.39  0.8  0.0  1.0
  C  C14  1  0.78  0.0  0.26  1.0
  C  C15  1  0.78  0.83  0.63  1.0

Si Si Si Si Si Si C C C C C C C C C C