data_[Na6Be3Mo3F18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Be  1.5700  1.0500  0.5900
  Mo  2.1600  1.4500  0.7750
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.6209]
_cell_length_b [5.6209]
_cell_length_c [12.6428]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Na2BeMoF6]
_chemical_formula_sum '[Na6 Be3 Mo3 F18]'
_cell_volume [345.9286]
_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
[
  Na  Na0  6  0.0000  0.0000  0.2578  1
  Be  Be1  3  -0.0000  0.0000  0.5000  1
  Mo  Mo2  3  -0.0000  0.0000  0.0000  1
  F  F3  18  0.0507  0.2826  0.5816  1
]