data_[Ac2Tb3Er7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.3784]
_cell_length_b [3.5704]
_cell_length_c [17.6672]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.4053]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [Ac2Tb3Er7]
_chemical_formula_sum '[Ac2 Tb3 Er7]'
_cell_volume [399.8303]
_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  2  0.0571  0.5000  0.6758  1
  Tb  Tb1  2  0.4534  0.0000  0.3423  1
  Tb  Tb2  1  0.5000  0.5000  0.0000  1
  Er  Er3  2  0.2299  0.5000  0.1621  1
  Er  Er4  2  0.2590  0.5000  0.4997  1
  Er  Er5  2  0.2801  0.0000  0.8420  1
  Er  Er6  1  0.0000  0.0000  0.0000  1
]