data_[Na6Er2F14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Er  1.2400  1.7500  1.0300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [8.2434]
_cell_length_b [7.9789]
_cell_length_c [6.2800]
_cell_angle_alpha [90.0000]
_cell_angle_beta [130.1713]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Na3ErF7]
_chemical_formula_sum '[Na6 Er2 F14]'
_cell_volume [315.6212]
_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
[
  Na  Na0  4  0.4949  0.2772  0.4871  1.0
  Na  Na1  2  0.4925  0.0000  0.9235  1.0
  Er  Er2  2  0.0569  0.0000  0.0483  1.0
  F  F3  4  0.1094  0.2636  0.2139  1.0
  F  F4  4  0.3536  0.2977  0.7298  1.0
  F  F5  2  0.1700  0.0000  0.8162  1.0
  F  F6  2  0.3573  0.5000  0.1597  1.0
  F  F7  2  0.3826  0.0000  0.4409  1.0
]