data_[Pm4Nd8Sm20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nd  1.1400  1.8500  1.2765
  Sm  1.1700  1.8500  1.2290
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [16.6551]
_cell_length_b [10.1364]
_cell_length_c [6.6087]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.8275]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [PmNd2Sm5]
_chemical_formula_sum '[Pm4 Nd8 Sm20]'
_cell_volume [1102.4807]
_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
[
  Pm  Pm0  4  0.2500  0.2500  0.0000  1
  Nd  Nd1  8  0.0791  0.2542  0.1224  1
  Sm  Sm2  8  0.0977  0.4111  0.6470  1
  Sm  Sm3  8  0.2004  0.0881  0.5237  1
  Sm  Sm4  4  0.0000  0.0596  0.7500  1
]