data_[K2Ta4Cu2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ta  1.5000  1.4500  0.8200
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [9.9971]
_cell_length_b [2.8438]
_cell_length_c [7.1690]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.3157]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [KTa2Cu]
_chemical_formula_sum '[K2 Ta4 Cu2]'
_cell_volume [201.1210]
_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
[
  K  K0  2  0.2343  0.0000  0.7158  1
  Ta  Ta1  2  0.0336  0.0000  0.1470  1
  Ta  Ta2  2  0.2686  0.5000  0.2083  1
  Cu  Cu3  2  0.4634  0.0000  0.4289  1
]