data_[Rb3Nd3Ag6Br18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Nd  1.1400  1.8500  1.2765
  Ag  1.9300  1.6000  1.0867
  Br  2.9600  1.1500  0.8825
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [7.8314]
_cell_length_b [7.8314]
_cell_length_c [20.8151]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [RbNd(AgBr3)2]
_chemical_formula_sum '[Rb3 Nd3 Ag6 Br18]'
_cell_volume [1105.5781]
_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
[
  Rb  Rb0  3  0.0000  0.0000  0.4830  1.0
  Nd  Nd1  3  0.0000  0.0000  0.9893  1.0
  Ag  Ag2  3  0.0000  0.0000  0.2360  1.0
  Ag  Ag3  3  0.0000  0.0000  0.7883  1.0
  Br  Br4  9  0.0027  0.6384  0.3879  1.0
  Br  Br5  9  0.0345  0.4065  0.5589  1.0
]