data_[Pm6Sm2Tm16]
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
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [10.8197]
_cell_length_b [11.2490]
_cell_length_c [6.2657]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Pm3SmTm8]
_chemical_formula_sum '[Pm6 Sm2 Tm16]'
_cell_volume [762.6026]
_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  0.0000  0.2505  0.4975  1
  Pm  Pm1  2  0.0000  0.0000  0.8350  1
  Sm  Sm2  2  0.0000  0.5000  0.8346  1
  Tm  Tm3  8  0.1685  0.2503  0.0012  1
  Tm  Tm4  4  0.1674  0.5000  0.3309  1
  Tm  Tm5  4  0.1678  0.0000  0.3310  1
]