data_[Na3Mg9V12O36]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  V  1.6300  1.3500  0.7775
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R32]
_cell_length_a [11.3216]
_cell_length_b [11.3216]
_cell_length_c [6.7962]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [155]
_chemical_formula_structural [NaMg3V4O12]
_chemical_formula_sum '[Na3 Mg9 V12 O36]'
_cell_volume [754.4210]
_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  3  0.0000  0.0000  0.0000  1
  Mg  Mg1  9  0.0000  0.5648  0.0000  1
  V  V2  9  0.0000  0.4348  0.5000  1
  V  V3  3  0.0000  0.0000  0.5000  1
  O  O4  18  0.0697  0.2596  0.1465  1
  O  O5  9  0.0000  0.5882  0.5000  1
  O  O6  9  0.0000  0.8470  0.5000  1
]