data_[K3Si3W6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Si  1.9000  1.1000  0.5400
  W  2.3600  1.3500  0.7667
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [2.8494]
_cell_length_b [2.8494]
_cell_length_c [31.3280]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [KSiW2]
_chemical_formula_sum '[K3 Si3 W6]'
_cell_volume [220.2845]
_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
[
  K  K0  3  0.0000  0.0000  0.0000  1
  Si  Si1  3  -0.0000  -0.0000  0.5000  1
  W  W2  6  0.0000  0.0000  0.2337  1
]