data_[Ac4Er12Sb8]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [18.6874]
_cell_length_b [4.3857]
_cell_length_c [9.9154]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.2349]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [AcEr3Sb2]
_chemical_formula_sum '[Ac4 Er12 Sb8]'
_cell_volume [746.7384]
_cell_formula_units_Z [4]
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  4  0.1132  0.0000  0.1287  1
  Er  Er1  4  0.0572  0.0000  0.6713  1
  Er  Er2  4  0.1367  0.5000  0.4755  1
  Er  Er3  4  0.1897  0.5000  0.8795  1
  Sb  Sb4  4  0.0168  0.5000  0.8405  1
  Sb  Sb5  4  0.2394  0.0000  0.6961  1
]