data_[Ac1Er1Tl4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Er  1.2400  1.7500  1.0300
  Tl  1.6200  1.9000  1.3325
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [5.1831]
_cell_length_b [5.1831]
_cell_length_c [7.8126]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [AcErTl4]
_chemical_formula_sum '[Ac1 Er1 Tl4]'
_cell_volume [181.7653]
_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
[
  Ac  Ac0  1  0.0000  0.0000  0.0000  1
  Er  Er1  1  0.0000  0.0000  0.5000  1
  Tl  Tl2  2  0.3333  0.6667  0.2180  1
  Tl  Tl3  2  0.3333  0.6667  0.6621  1
]