data_[Rb3Na6Pm3F18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
  Pm  1.1300  1.8500  1.1100
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [6.1438]
_cell_length_b [6.1438]
_cell_length_c [16.1765]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [RbNa2PmF6]
_chemical_formula_sum '[Rb3 Na6 Pm3 F18]'
_cell_volume [528.7989]
_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  0.2062  1
  Na  Na1  3  0.0000  0.0000  0.4765  1
  Na  Na2  3  0.0000  0.0000  0.9858  1
  Pm  Pm3  3  0.0000  0.0000  0.6859  1
  F  F4  9  0.0044  0.3279  0.0739  1
  F  F5  9  0.0359  0.5899  0.2540  1
]