data_Na2YW
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.91
_cell_length_b   6.05
_cell_length_c   5.4
_cell_angle_alpha   90.0
_cell_angle_beta   91.89
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2YW
_chemical_formula_sum   'Na2 Y1 W1'
_cell_volume   94.98
_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  Na0  1  0.59  0.03  0.95  1.0
  Na  Na1  1  0.14  0.03  0.45  1.0
  Y  Y3  1  0.0  0.0  0.0  1.0
  W  W2  1  0.36  0.0  0.7  1.0

data_Na2YW
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.91
_cell_length_b   5.4
_cell_length_c   6.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.89
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2YW
_chemical_formula_sum   'Na2 Y1 W1'
_cell_volume   94.98
_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  Na0  1  0.41  0.05  0.97  1.0
  Na  Na1  1  0.86  0.55  0.97  1.0
  Y  Y2  1  0.0  0.0  0.0  1.0
  W  W3  1  0.64  0.3  0.0  1.0

Na Na Y W
Na Na Y W 0 3 o o o 0 2 + o + 1 3 o o o 