data_NaAsW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.34
_cell_length_b   5.34
_cell_length_c   5.34
_cell_angle_alpha   137.94
_cell_angle_beta   137.94
_cell_angle_gamma   60.99
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaAsW2
_chemical_formula_sum   'Na1 As1 W2'
_cell_volume   67.42
_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
  Na  Na1  1  0.0  0.0  0.0  1.0
  As  As0  1  0.0  0.0  0.6  1.0
  W  W2  1  0.91  0.0  0.3  1.0
  W  W3  1  0.0  0.91  0.3  1.0

data_NaAsW2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.42
_cell_length_b   5.42
_cell_length_c   5.34
_cell_angle_alpha   90.0
_cell_angle_beta   120.5
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaAsW2
_chemical_formula_sum   'Na2 As2 W4'
_cell_volume   134.84
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  0.0  0.0  0.0  1.0
  As  As1  2  0.0  0.0  0.6  1.0
  W  W2  4  0.04  0.04  0.38  1.0

Na As W W