data_[Rb2Bi4Te6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Bi  2.0200  1.6000  1.0350
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.4778]
_cell_length_b [12.9440]
_cell_length_c [8.2116]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [RbBi2Te3]
_chemical_formula_sum '[Rb2 Bi4 Te6]'
_cell_volume [475.9538]
_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  2  0.0000  0.1370  0.0119  1
  Bi  Bi1  2  0.0000  0.2136  0.5061  1
  Bi  Bi2  2  0.5000  0.4994  0.9999  1
  Te  Te3  2  0.0000  0.4043  0.7630  1
  Te  Te4  2  0.5000  0.0842  0.6565  1
  Te  Te5  2  0.5000  0.3141  0.2638  1
]