data_[Cu2Ru2W4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  Ru  2.2000  1.3000  0.6610
  W  2.3600  1.3500  0.7667
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [3.8834]
_cell_length_b [3.8834]
_cell_length_c [7.8033]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [CuRuW2]
_chemical_formula_sum '[Cu2 Ru2 W4]'
_cell_volume [117.6816]
_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  2  0.0000  0.0000  0.5000  1
  Ru  Ru1  2  0.0000  0.5000  0.2500  1
  W  W2  2  0.0000  0.0000  0.0000  1
  W  W3  2  0.0000  0.5000  0.7500  1
]