data_[Rb2Y2Be2O6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Y  1.2200  1.8000  1.0400
  Be  1.5700  1.0500  0.5900
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [7.7219]
_cell_length_b [3.4087]
_cell_length_c [7.9196]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.1700]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbYBeO3]
_chemical_formula_sum '[Rb2 Y2 Be2 O6]'
_cell_volume [196.8987]
_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  0.2283  0.2500  0.1988  1.0
  Y  Y1  2  0.1625  0.2500  0.6615  1.0
  Be  Be2  2  0.3953  0.7500  0.9369  1.0
  O  O3  2  0.1463  0.7500  0.4669  1.0
  O  O4  2  0.1820  0.7500  0.8630  1.0
  O  O5  2  0.4645  0.2500  0.8663  1.0
]