data_[K2Rb1Cu1F8]
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/m]
_cell_length_a [5.0444]
_cell_length_b [5.5486]
_cell_length_c [7.7775]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.4533]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [K2RbCuF8]
_chemical_formula_sum '[K2 Rb1 Cu1 F8]'
_cell_volume [209.8164]
_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
[
  K  K0  2  0.3759  0.5000  0.2057  1.0
  Rb  Rb1  1  0.0000  0.0000  0.5000  1.0
  Cu  Cu2  1  0.0000  0.0000  0.0000  1.0
  F  F3  4  0.1597  0.2376  0.8955  1.0
  F  F4  2  0.1999  0.5000  0.5042  1.0
  F  F5  2  0.3132  0.0000  0.2189  1.0
]