data_[Si6C2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [6.8555]
_cell_length_b [2.8345]
_cell_length_c [6.5359]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.1612]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Si3C]
_chemical_formula_sum '[Si6 C2]'
_cell_volume [109.8103]
_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  4  0.0915  0.5000  0.2235  1
  Si  Si1  2  0.0000  0.0000  0.5000  1
  C  C2  2  0.0000  0.0000  0.0000  1
]