data_[Pm3Sm3Er6Te18]
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
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.7643]
_cell_length_b [7.7643]
_cell_length_c [21.1150]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [PmSm(ErTe3)2]
_chemical_formula_sum '[Pm3 Sm3 Er6 Te18]'
_cell_volume [1102.3778]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.1804  1
  Sm  Sm1  3  0.0000  0.0000  0.6797  1
  Er  Er2  3  0.0000  0.0000  0.4917  1
  Er  Er3  3  0.0000  0.0000  0.9922  1
  Te  Te4  9  0.0139  0.6493  0.2491  1
  Te  Te5  9  0.0140  0.3621  0.7491  1
]