data_[K4Rb2Cu2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  Cu  1.9000  1.3500  0.8200
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [6.2187]
_cell_length_b [6.4707]
_cell_length_c [10.8134]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.1778]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [K2RbCuF6]
_chemical_formula_sum '[K4 Rb2 Cu2 F12]'
_cell_volume [355.6579]
_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  4  0.2715  0.5516  0.7551  1.0
  Rb  Rb1  2  0.5000  0.0000  0.0000  1.0
  Cu  Cu2  2  0.0000  0.0000  0.5000  1.0
  F  F3  4  0.0943  0.5570  0.2016  1.0
  F  F4  4  0.2238  0.2433  0.5728  1.0
  F  F5  4  0.2984  0.6655  0.0436  1.0
]