data_[K2Rb2O10]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [8.6410]
_cell_length_b [6.9859]
_cell_length_c [4.2491]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.4108]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [KRbO5]
_chemical_formula_sum '[K2 Rb2 O10]'
_cell_volume [223.4400]
_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
[
  Rb  Rb0  2  0.2370  0.5000  0.9398  1
  K  K1  2  0.2694  0.0000  0.4044  1
  O  O2  4  0.0006  0.2592  0.0296  1
  O  O3  4  0.4635  0.3102  0.6949  1
  O  O4  2  0.0654  0.0000  0.7068  1
]