data_SiC3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.12
_cell_length_b   4.12
_cell_length_c   16.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiC3
_chemical_formula_sum   'Si6 C18'
_cell_volume   239.48
_cell_formula_units_Z   6
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  Si18  1  0.0  0.0  0.07  1.0
  Si  Si19  1  0.0  0.0  0.21  1.0
  Si  Si20  1  0.06  0.19  0.21  1.0
  Si  Si21  1  0.06  0.19  0.22  1.0
  Si  Si22  1  0.0  0.38  0.07  1.0
  Si  Si23  1  0.0  0.38  0.08  1.0
  C  C0  1  0.0  0.22  0.07  1.0
  C  C1  1  0.27  0.96  0.07  1.0
  C  C2  1  0.73  0.96  0.07  1.0
  C  C3  1  0.06  0.35  0.21  1.0
  C  C4  1  0.79  0.61  0.21  1.0
  C  C5  1  0.33  0.61  0.21  1.0
  C  C6  1  0.06  0.04  0.34  1.0
  C  C7  1  0.33  0.77  0.34  1.0
  C  C8  1  0.79  0.77  0.34  1.0
  C  C9  1  0.06  0.04  0.8  1.0
  C  C10  1  0.33  0.77  0.8  1.0
  C  C11  1  0.79  0.77  0.8  1.0
  C  C12  1  0.0  0.53  0.95  1.0
  C  C13  1  0.73  0.8  0.95  1.0
  C  C14  1  0.27  0.8  0.95  1.0
  C  C15  1  0.0  0.53  0.48  1.0
  C  C16  1  0.73  0.8  0.48  1.0
  C  C17  1  0.27  0.8  0.48  1.0

data_SiC3
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.12
_cell_length_b   4.12
_cell_length_c   16.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiC3
_chemical_formula_sum   'Si6 C18'
_cell_volume   239.48
_cell_formula_units_Z   6
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  0.0  0.0  0.07  1.0
  Si  Si1  1  0.0  0.0  0.21  1.0
  Si  Si2  1  0.0  0.38  0.07  1.0
  Si  Si3  1  0.0  0.38  0.08  1.0
  Si  Si4  1  0.06  0.19  0.21  1.0
  Si  Si5  1  0.06  0.19  0.22  1.0
  C  C6  1  0.0  0.22  0.07  1.0
  C  C7  1  0.0  0.53  0.48  1.0
  C  C8  1  0.0  0.53  0.95  1.0
  C  C9  1  0.06  0.04  0.34  1.0
  C  C10  1  0.06  0.04  0.8  1.0
  C  C11  1  0.06  0.35  0.21  1.0
  C  C12  1  0.27  0.8  0.48  1.0
  C  C13  1  0.27  0.8  0.95  1.0
  C  C14  1  0.27  0.96  0.07  1.0
  C  C15  1  0.33  0.77  0.34  1.0
  C  C16  1  0.33  0.77  0.8  1.0
  C  C17  1  0.33  0.61  0.21  1.0
  C  C18  1  0.73  0.96  0.07  1.0
  C  C19  1  0.73  0.8  0.48  1.0
  C  C20  1  0.73  0.8  0.95  1.0
  C  C21  1  0.79  0.61  0.21  1.0
  C  C22  1  0.79  0.77  0.34  1.0
  C  C23  1  0.79  0.77  0.8  1.0

Si Si Si Si Si Si C C C C C C C C C C C C C C C C C C
Si Si Si Si Si Si C C C C C C C C C C C C C C C C C C 0 8 - - o 0 6 o o o 0 7 o - o 0 19 - - - 1 2 o o o 1 3 o o o 1 10 - - o 2 3 o o o 2 9 o o o 3 9 o o o 4 5 o o o 4 6 o o o 5 6 o o o 6 8 - - o 8 19 o o - 9 11 o o o 11 13 o o o 12 14 - - o 12 13 o - o 13 23 o o o 13 14 - o o 13 14 o o o 14 22 o o o 15 17 - - o 15 16 o - o 16 20 o o o 16 17 - o o 16 17 o o o 17 19 o o o 18 20 o o o 18 19 - o o 19 20 o o o 19 20 + o o 21 23 o o o 21 22 - o o 22 23 o o o 22 23 + o o 