data_[Na4Sr2Mg2F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Mg  1.3100  1.5000  0.8600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.7101]
_cell_length_b [6.0023]
_cell_length_c [10.0042]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.0129]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Na2SrMgF6]
_chemical_formula_sum '[Na4 Sr2 Mg2 F12]'
_cell_volume [284.2185]
_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  0.2709  0.5425  0.7703  1.0
  Sr  Sr1  2  0.5000  0.0000  0.0000  1.0
  Mg  Mg2  2  0.0000  0.0000  0.5000  1.0
  F  F3  4  0.1047  0.5853  0.2244  1.0
  F  F4  4  0.2404  0.2137  0.0856  1.0
  F  F5  4  0.3424  0.6569  0.0423  1.0
]