data_[Ca6Pm6Nd45]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [11.7302]
_cell_length_b [11.7302]
_cell_length_c [17.8509]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ca2Pm2Nd15]
_chemical_formula_sum '[Ca6 Pm6 Nd45]'
_cell_volume [2127.1771]
_cell_formula_units_Z [3]
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  6  0.0000  0.0000  0.3316  1
  Pm  Pm1  6  0.0000  0.0000  0.0929  1
  Nd  Nd2  18  0.0000  0.2967  0.0000  1
  Nd  Nd3  18  0.0080  0.5040  0.1399  1
  Nd  Nd4  9  0.0000  0.5000  0.5000  1
]