data_[Rb4Mg6F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Mg  1.3100  1.5000  0.8600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.2059]
_cell_length_b [6.3384]
_cell_length_c [5.3978]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.8290]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Mg3F8]
_chemical_formula_sum '[Rb4 Mg6 F16]'
_cell_volume [427.6348]
_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
[
  Rb  Rb0  4  0.2244  0.5000  0.6768  1.0
  Mg  Mg1  4  0.0000  0.2593  0.0000  1.0
  Mg  Mg2  2  0.0000  0.0000  0.5000  1.0
  F  F3  8  0.0836  0.2161  0.3774  1.0
  F  F4  4  0.0831  0.0000  0.8969  1.0
  F  F5  4  0.0949  0.5000  0.9750  1.0
]