data_[K2Rb4Er2Br12]
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
  Er  1.2400  1.7500  1.0300
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [8.0553]
_cell_length_b [8.4851]
_cell_length_c [13.9751]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.5038]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [KRb2ErBr6]
_chemical_formula_sum '[K2 Rb4 Er2 Br12]'
_cell_volume [787.1639]
_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  4  0.2793  0.0715  0.2535  1
  K  K1  2  0.5000  0.0000  0.0000  1
  Er  Er2  2  0.0000  0.0000  0.5000  1
  Br  Br3  4  0.1198  0.0367  0.7290  1
  Br  Br4  4  0.2340  0.7263  0.5608  1
  Br  Br5  4  0.3290  0.1814  0.5496  1
]