data_[K4Na10Sn8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [15.0965]
_cell_length_b [6.9484]
_cell_length_c [9.4832]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.9597]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Na5Sn4]
_chemical_formula_sum '[K4 Na10 Sn8]'
_cell_volume [870.3760]
_cell_formula_units_Z [2]
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  4  0.2469  0.5000  0.6218  1
  Na  Na1  8  0.1227  0.2548  0.9189  1
  Na  Na2  2  0.0000  0.0000  0.5000  1
  Sn  Sn3  4  0.0739  0.5000  0.1798  1
  Sn  Sn4  4  0.2225  0.0000  0.7558  1
]