data_[K15Si3Sb6]
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
  Sb  2.0500  1.4500  0.8300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.9606]
_cell_length_b [5.9606]
_cell_length_c [30.3563]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [K5SiSb2]
_chemical_formula_sum '[K15 Si3 Sb6]'
_cell_volume [934.0365]
_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  6  0.0000  0.0000  0.2214  1
  K  K1  6  0.0000  0.0000  0.3681  1
  K  K2  3  -0.0000  -0.0000  0.5000  1
  Si  Si3  3  0.0000  0.0000  0.0000  1
  Sb  Sb4  6  0.0000  0.0000  0.0912  1
]