data_[Er4Sn2F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Sn  1.9600  1.4500  0.8300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.1441]
_cell_length_b [3.6547]
_cell_length_c [5.5887]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.9907]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Er2SnF8]
_chemical_formula_sum '[Er4 Sn2 F16]'
_cell_volume [292.4812]
_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
[
  Er  Er0  4  0.1829  0.0000  0.6907  1.0
  Sn  Sn1  2  0.0000  0.5000  0.0000  1.0
  F  F2  4  0.0519  0.0000  0.7950  1.0
  F  F3  4  0.1049  0.5000  0.4682  1.0
  F  F4  4  0.1866  0.5000  0.9627  1.0
  F  F5  4  0.2158  0.0000  0.3319  1.0
]