data_WC2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.12
_cell_length_b   3.12
_cell_length_c   4.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   WC2
_chemical_formula_sum   'W1 C2'
_cell_volume   40.72
_cell_formula_units_Z   1
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  W2  1  0.0  0.0  0.0  1.0
  C  C0  1  0.0  0.8  0.78  1.0
  C  C1  1  0.56  0.9  0.06  1.0

data_WC2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.12
_cell_length_b   3.12
_cell_length_c   4.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   WC2
_chemical_formula_sum   'W1 C2'
_cell_volume   40.72
_cell_formula_units_Z   1
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  W0  1  0.0  0.0  0.0  1.0
  C  C1  1  0.0  0.8  0.78  1.0
  C  C2  1  0.56  0.9  0.06  1.0

W C C
C2W crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one dimethyltungsten molecule. W(1) is bonded in a 2-coordinate geometry to one C(1) and one C(2) atom. The W(1)-C(1) bond length is 1.25 Å. The W(1)-C(2) bond length is 1.29 Å. There are two inequivalent C sites. In the first C site, C(1) is bonded in a single-bond geometry to one W(1) atom. In the second C site, C(2) is bonded in a distorted single-bond geometry to one W(1) atom.