data_[K2Rb2]
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
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [8.1866]
_cell_length_b [4.9812]
_cell_length_c [8.0522]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.7357]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [KRb]
_chemical_formula_sum '[K2 Rb2]'
_cell_volume [325.3714]
_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  0.2809  0.0000  0.0997  1.0
  Rb  Rb1  2  0.2993  0.5000  0.5996  1.0
]