data_NaW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.61
_cell_length_b   4.45
_cell_length_c   7.04
_cell_angle_alpha   90.0
_cell_angle_beta   96.14
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaW
_chemical_formula_sum   'Na2 W2'
_cell_volume   81.49
_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
  Na  Na0  1  0.36  0.11  0.05  1.0
  Na  Na1  1  0.5  0.34  0.96  1.0
  W  W2  1  0.41  0.11  0.95  1.0
  W  W3  1  0.45  0.34  0.06  1.0

data_NaW
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.61
_cell_length_b   4.45
_cell_length_c   7.04
_cell_angle_alpha   90.0
_cell_angle_beta   96.14
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   NaW
_chemical_formula_sum   'Na2 W2'
_cell_volume   81.49
_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
  Na  Na0  2  0.07  0.11  0.96  1.0
  W  W1  2  0.02  0.11  0.06  1.0

Na Na W W
Na Na W W 0 2 o o - 1 3 o o + 
NaW crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two NaW clusters. Na(1) is bonded in a distorted single-bond geometry to one W(1) atom. The Na(1)-W(1) bond length is 0.73 Å. W(1) is bonded in a distorted single-bond geometry to one Na(1) atom.