data_[Mg6W6N18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  W  2.3600  1.3500  0.7667
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [R3c]
_cell_length_a [5.2931]
_cell_length_b [5.2931]
_cell_length_c [14.3524]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [161]
_chemical_formula_structural [MgWN3]
_chemical_formula_sum '[Mg6 W6 N18]'
_cell_volume [348.2373]
_cell_formula_units_Z [6]
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
[
  Mg  Mg0  6  0.0000  0.0000  0.2887  1
  W  W1  6  0.0000  0.0000  0.5065  1
  N  N2  18  0.0532  0.3387  0.0682  1
]