data_[Rb4Tl4F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Tl  1.6200  1.9000  1.3325
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pbcm]
_cell_length_a [6.0927]
_cell_length_b [8.1266]
_cell_length_c [8.2687]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [57]
_chemical_formula_structural [RbTlF4]
_chemical_formula_sum '[Rb4 Tl4 F16]'
_cell_volume [409.4027]
_cell_formula_units_Z [4]
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  0.4764  0.1905  0.2500  1
  Tl  Tl1  4  0.0000  0.0000  0.0000  1
  F  F2  8  0.3079  0.5860  0.5679  1
  F  F3  4  0.1317  0.5209  0.2500  1
  F  F4  4  0.1571  0.2500  0.0000  1
]