data_[Rb3Na6Al3H18]
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
  Al  1.6100  1.2500  0.6750
  H  2.2000  0.2500  0.0000
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.6650]
_cell_length_b [5.6650]
_cell_length_c [15.4315]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [RbNa2AlH6]
_chemical_formula_sum '[Rb3 Na6 Al3 H18]'
_cell_volume [428.8786]
_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  0.4585  1.0
  Na  Na1  3  0.0000  0.0000  0.2129  1.0
  Na  Na2  3  0.0000  0.0000  0.6892  1.0
  Al  Al3  3  0.0000  0.0000  0.0159  1.0
  H  H4  9  0.0440  0.2857  0.9538  1.0
  H  H5  9  0.1410  0.7493  0.7542  1.0
]