data_[Pr3Nd3Br6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Nd  1.1400  1.8500  1.2765
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [3.7214]
_cell_length_b [3.7214]
_cell_length_c [28.1646]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [PrNdBr2]
_chemical_formula_sum '[Pr3 Nd3 Br6]'
_cell_volume [337.7887]
_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
[
  Pr  Pr0  3  0.0000  0.0000  0.5014  1
  Nd  Nd1  3  0.0000  0.0000  0.6656  1
  Br  Br2  3  0.0000  0.0000  0.0824  1
  Br  Br3  3  0.0000  0.0000  0.2507  1
]