data_[Pm6Er2Tm8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
]
_symmetry_space_group_name_H-M [Pmn2_1]
_cell_length_a [11.2990]
_cell_length_b [7.2613]
_cell_length_c [6.2566]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [31]
_chemical_formula_structural [Pm3ErTm4]
_chemical_formula_sum '[Pm6 Er2 Tm8]'
_cell_volume [513.3204]
_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  0.2499  0.3730  0.4820  1
  Pm  Pm1  2  0.0000  0.6276  0.6471  1
  Er  Er2  2  0.0000  0.3698  0.1459  1
  Tm  Tm3  4  0.2482  0.1213  0.9811  1
  Tm  Tm4  2  0.0000  0.1209  0.6481  1
  Tm  Tm5  2  0.0000  0.8780  0.1479  1
]