data_[Mg3Ni6W3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ni  1.9100  1.3500  0.7400
  W  2.3600  1.3500  0.7667
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.1594]
_cell_length_b [5.1594]
_cell_length_c [14.0686]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [MgNi2WO6]
_chemical_formula_sum '[Mg3 Ni6 W3 O18]'
_cell_volume [324.3265]
_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
[
  Mg  Mg0  3  0.0000  0.0000  0.5031  1.0
  Ni  Ni1  3  0.0000  0.0000  0.2969  1.0
  Ni  Ni2  3  0.0000  0.0000  0.7972  1.0
  W  W3  3  0.0000  0.0000  0.9963  1.0
  O  O4  9  0.0282  0.3350  0.0650  1.0
  O  O5  9  0.0417  0.6735  0.5704  1.0
]