data_[Pr3Sm2Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [6.2286]
_cell_length_b [6.2474]
_cell_length_c [8.0438]
_cell_angle_alpha [75.1748]
_cell_angle_beta [82.6882]
_cell_angle_gamma [80.4562]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Pr3(SmEr2)2]
_chemical_formula_sum '[Pr3 Sm2 Er4]'
_cell_volume [297.2103]
_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
[
  Pr  Pr0  2  0.1110  0.5584  0.7761  1
  Pr  Pr1  1  0.0000  0.0000  0.0000  1
  Sm  Sm2  2  0.3332  0.6681  0.3334  1
  Er  Er3  2  0.2265  0.1107  0.5532  1
  Er  Er4  2  0.4469  0.2219  0.1121  1
]