data_CuW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.16
_cell_length_b   4.16
_cell_length_c   4.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CuW
_chemical_formula_sum   'Cu2 W2'
_cell_volume   74.14
_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
  Cu  Cu0  1  0.08  0.2  0.7  1.0
  Cu  Cu1  1  0.0  0.4  0.23  1.0
  W  W2  1  0.08  0.2  0.23  1.0
  W  W3  1  0.0  0.4  0.7  1.0

data_CuW
_symmetry_space_group_name_H-M   P-1
_cell_length_a   4.16
_cell_length_b   4.16
_cell_length_c   4.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   CuW
_chemical_formula_sum   'Cu2 W2'
_cell_volume   74.14
_cell_formula_units_Z   2
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
  Cu  Cu0  2  0.04  0.9  0.23  1.0
  W  W1  2  0.04  0.9  0.77  1.0

Cu Cu W W
CuW crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two CuW clusters. W(1) is bonded in a distorted single-bond geometry to one Cu(1) atom. The W(1)-Cu(1) bond length is 1.05 Å. Cu(1) is bonded in a distorted single-bond geometry to one W(1) atom.