data_[Ca8Ac8Nd2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Ac  1.1000  1.9500  1.2600
  Nd  1.1400  1.8500  1.2765
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [11.9181]
_cell_length_b [11.9181]
_cell_length_c [5.3585]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Ca4Ac4Nd]
_chemical_formula_sum '[Ca8 Ac8 Nd2]'
_cell_volume [761.1349]
_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
[
  Ca  Ca0  8  0.0000  0.3322  0.0000  1
  Ac  Ac1  8  0.1615  0.1615  0.5000  1
  Nd  Nd2  2  0.0000  0.0000  0.0000  1
]