data_[K8Sn4Sb4Se20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Sn  1.9600  1.4500  0.8300
  Sb  2.0500  1.4500  0.8300
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.9905]
_cell_length_b [20.8587]
_cell_length_c [14.0011]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [K2SnSbSe5]
_chemical_formula_sum '[K8 Sn4 Sb4 Se20]'
_cell_volume [1165.4077]
_cell_formula_units_Z [4]
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  0.0000  0.1127  0.6696  1
  K  K1  4  0.0000  0.1231  0.3053  1
  Sn  Sn2  4  0.0000  0.4356  0.4327  1
  Sb  Sb3  4  0.0000  0.2255  0.0362  1
  Se  Se4  4  0.0000  0.0432  0.0500  1
  Se  Se5  4  0.0000  0.2738  0.6721  1
  Se  Se6  4  0.0000  0.3145  0.3892  1
  Se  Se7  4  0.0000  0.3430  0.9902  1
  Se  Se8  4  0.0000  0.4951  0.2788  1
]