data_W2C
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.86
_cell_length_b   2.84
_cell_length_c   7.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   W2C
_chemical_formula_sum   'W8 C4'
_cell_volume   151.74
_cell_formula_units_Z   4
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
  W  W4  1  0.55  0.71  0.38  1.0
  W  W5  1  0.75  0.13  0.28  1.0
  W  W6  1  0.12  0.71  0.51  1.0
  W  W7  1  0.31  0.13  0.4  1.0
  W  W8  1  0.71  0.71  0.68  1.0
  W  W9  1  0.58  0.13  0.79  1.0
  W  W10  1  0.28  0.71  1.0  1.0
  W  W11  1  0.15  0.13  0.11  1.0
  C  C0  1  0.7  0.71  0.24  1.0
  C  C1  1  0.73  0.13  0.34  1.0
  C  C2  1  0.13  0.71  0.44  1.0
  C  C3  1  0.16  0.13  0.55  1.0

data_W2C
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.84
_cell_length_b   6.86
_cell_length_c   7.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   W2C
_chemical_formula_sum   'W8 C4'
_cell_volume   151.74
_cell_formula_units_Z   4
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
  W  W0  2  0.21  0.22  0.21  1.0
  W  W1  2  0.21  0.38  0.51  1.0
  W  W2  2  0.21  0.65  0.89  1.0
  W  W3  2  0.21  0.81  0.38  1.0
  C  C4  2  0.21  0.23  0.66  1.0
  C  C5  2  0.21  0.8  0.45  1.0

W W W W W W W W C C C C
W W W W W W W W C C C C 0 3 o + o 0 9 o + o 0 1 o + o 0 8 o o o 1 9 o o o 1 8 o - o 2 10 o o o 2 3 o + o 2 11 o + o 3 10 o - o 3 11 o o o 4 5 o o o 4 5 o + o 6 7 o o + 6 7 o + + 8 9 o + o 10 11 o + o 