data_[Er18Sn18F18]
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 [R-3]
_cell_length_a [10.4330]
_cell_length_b [10.4330]
_cell_length_c [12.1931]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [ErSnF]
_chemical_formula_sum '[Er18 Sn18 F18]'
_cell_volume [1149.3723]
_cell_formula_units_Z [18]
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  18  0.0570  0.5983  0.2716  1
  Sn  Sn1  18  0.0436  0.1841  0.8526  1
  F  F2  18  0.0528  0.8594  0.4233  1
]