data_[Rb2Tl2C2]
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
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [P4/nmm]
_cell_length_a [4.4057]
_cell_length_b [4.4057]
_cell_length_c [7.8166]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [129]
_chemical_formula_structural [RbTlC]
_chemical_formula_sum '[Rb2 Tl2 C2]'
_cell_volume [151.7228]
_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  0.5000  0.8542  1
  Tl  Tl1  2  0.0000  0.0000  0.5000  1
  C  C2  2  0.0000  0.5000  0.3188  1
]