data_[Li2Mg2F6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Mg  1.3100  1.5000  0.8600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [17.3770]
_cell_length_b [2.8107]
_cell_length_c [10.4787]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [LiMgF3]
_chemical_formula_sum '[Li2 Mg2 F6]'
_cell_volume [511.8011]
_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
[
  Li  Li0  2  0.0000  0.0000  0.2536  1
  Mg  Mg1  2  0.0000  0.0000  0.9791  1
  F  F2  4  0.0684  0.0000  0.3991  1
  F  F3  2  0.0000  0.0000  0.6295  1
]