data_[Rb2Be2Tl4As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Be  1.5700  1.0500  0.5900
  Tl  1.6200  1.9000  1.3325
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.8220]
_cell_length_b [7.5472]
_cell_length_c [7.9400]
_cell_angle_alpha [70.6956]
_cell_angle_beta [77.2030]
_cell_angle_gamma [73.7167]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [RbBe(TlAs)2]
_chemical_formula_sum '[Rb2 Be2 Tl4 As4]'
_cell_volume [366.5845]
_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  0.1998  0.1670  0.0490  1.0
  Be  Be1  2  0.2881  0.5088  0.5125  1.0
  Tl  Tl2  2  0.1794  0.0966  0.5790  1.0
  Tl  Tl3  2  0.4275  0.6191  0.7694  1.0
  As  As4  2  0.0484  0.4945  0.3385  1.0
  As  As5  2  0.4564  0.7514  0.3629  1.0
]