data_[Rb2Sn7Hg1]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sn  1.9600  1.4500  0.8300
  Hg  2.0000  1.5000  1.2450
]
_symmetry_space_group_name_H-M [P-4m2]
_cell_length_a [5.2359]
_cell_length_b [5.2359]
_cell_length_c [12.5431]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [115]
_chemical_formula_structural [Rb2Sn7Hg]
_chemical_formula_sum '[Rb2 Sn7 Hg1]'
_cell_volume [343.8701]
_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  0.0000  0.5000  0.2446  1
  Sn  Sn1  2  0.0000  0.5000  0.6279  1
  Sn  Sn2  2  0.0000  0.5000  0.8764  1
  Sn  Sn3  1  0.0000  0.0000  0.0000  1
  Sn  Sn4  1  0.0000  0.0000  0.5000  1
  Sn  Sn5  1  0.5000  0.5000  0.5000  1
  Hg  Hg6  1  0.5000  0.5000  0.0000  1
]