data_[Na2Er1Co1F8]
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
  Co  1.8800  1.3500  0.7683
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [4.9560]
_cell_length_b [6.6728]
_cell_length_c [5.2036]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.2360]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Na2ErCoF8]
_chemical_formula_sum '[Na2 Er1 Co1 F8]'
_cell_volume [172.0465]
_cell_formula_units_Z [1]
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  2  0.5000  0.2415  0.5000  1.0
  Er  Er1  1  0.0000  0.5000  0.0000  1.0
  Co  Co2  1  0.0000  0.0000  0.0000  1.0
  F  F3  4  0.1830  0.2311  0.8227  1.0
  F  F4  2  0.2618  0.0000  0.2539  1.0
  F  F5  2  0.3025  0.5000  0.2917  1.0
]