data_[Cu4As2W2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  As  2.1800  1.1500  0.6600
  W  2.3600  1.3500  0.7667
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [2.9183]
_cell_length_b [4.2401]
_cell_length_c [9.1355]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Cu2AsW]
_chemical_formula_sum '[Cu4 As2 W2]'
_cell_volume [113.0399]
_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  4  0.0000  0.0000  0.2618  1
  As  As1  2  0.0000  0.5000  0.0000  1
  W  W2  2  0.0000  0.5000  0.5000  1
]