data_[Rb2Be1Fe1Os1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Be  1.5700  1.0500  0.5900
  Fe  1.8300  1.4000  0.8525
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [6.3118]
_cell_length_b [6.3118]
_cell_length_c [4.2714]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [Rb2BeFeOs]
_chemical_formula_sum '[Rb2 Be1 Fe1 Os1]'
_cell_volume [170.1662]
_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
[
  Rb  Rb0  2  0.0000  0.5000  0.0000  1
  Be  Be1  1  0.0000  0.0000  0.0000  1
  Fe  Fe2  1  0.0000  0.0000  0.5000  1
  Os  Os3  1  0.5000  0.5000  0.5000  1
]