data_[Rb2Er2Cl6]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [5.3423]
_cell_length_b [7.1693]
_cell_length_c [8.7875]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.8322]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbErCl3]
_chemical_formula_sum '[Rb2 Er2 Cl6]'
_cell_volume [323.8006]
_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  0.1650  0.7500  0.3187  1
  Er  Er1  2  0.4315  0.7500  0.8708  1
  Cl  Cl2  4  0.3231  0.5048  0.6548  1
  Cl  Cl3  2  0.0516  0.2500  0.0895  1
]