data_[Pm4Sm10Er4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Sm  1.1700  1.8500  1.2290
  Er  1.2400  1.7500  1.0300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.9614]
_cell_length_b [3.5987]
_cell_length_c [14.8716]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.4802]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Pm2Sm5Er2]
_chemical_formula_sum '[Pm4 Sm10 Er4]'
_cell_volume [595.6950]
_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
[
  Pm  Pm0  4  0.1680  0.5000  0.6681  1
  Sm  Sm1  4  0.1104  0.0000  0.4433  1
  Sm  Sm2  4  0.2212  0.0000  0.8890  1
  Sm  Sm3  2  0.0000  0.0000  0.0000  1
  Er  Er4  4  0.0553  0.5000  0.2216  1
]