data_[Rb2Er4Br14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Er  1.2400  1.7500  1.0300
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [8.9468]
_cell_length_b [14.4516]
_cell_length_c [5.5500]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [RbEr2Br7]
_chemical_formula_sum '[Rb2 Er4 Br14]'
_cell_volume [717.5821]
_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  0.0000  0.0000  0.0000  1.0
  Er  Er1  4  0.0000  0.3028  0.5000  1.0
  Br  Br2  8  0.1879  0.1400  0.5000  1.0
  Br  Br3  4  0.0000  0.2976  0.0000  1.0
  Br  Br4  2  0.0000  0.5000  0.5000  1.0
]