data_[Rb2Ba1Hg1F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ba  0.8900  2.1500  1.4900
  Hg  2.0000  1.5000  1.2450
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [4.4731]
_cell_length_b [8.3486]
_cell_length_c [6.5228]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.2791]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Rb2BaHgF8]
_chemical_formula_sum '[Rb2 Ba1 Hg1 F8]'
_cell_volume [242.1271]
_cell_formula_units_Z [1]
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  2  0.5000  0.2396  0.5000  1.0
  Ba  Ba1  1  0.0000  0.5000  0.0000  1.0
  Hg  Hg2  1  0.0000  0.0000  0.0000  1.0
  F  F3  4  0.0658  0.2063  0.7989  1.0
  F  F4  2  0.4082  0.0000  0.1946  1.0
  F  F5  2  0.4721  0.5000  0.7674  1.0
]