data_[Rb4Mg2Sn2F12]
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
  Sn  1.9600  1.4500  0.8300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.5127]
_cell_length_b [6.0723]
_cell_length_c [6.1098]
_cell_angle_alpha [90.0000]
_cell_angle_beta [125.3028]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2MgSnF6]
_chemical_formula_sum '[Rb4 Mg2 Sn2 F12]'
_cell_volume [318.3053]
_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  0.2497  0.0000  0.2479  1
  Mg  Mg1  2  0.0000  0.5000  0.0000  1
  Sn  Sn2  2  0.0000  0.0000  0.5000  1
  F  F3  8  0.0204  0.2708  0.7920  1
  F  F4  4  0.2284  0.5000  0.2668  1
]