data_[K2Al2Zn4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Al  1.6100  1.2500  0.6750
  Zn  1.6500  1.3500  0.8800
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.2646]
_cell_length_b [2.8573]
_cell_length_c [15.2612]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [KAlZn2]
_chemical_formula_sum '[K2 Al2 Zn4]'
_cell_volume [185.9650]
_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  2  0.5000  0.0000  0.1916  1
  Al  Al1  2  0.0000  0.0000  0.5156  1
  Zn  Zn2  2  0.0000  0.0000  0.8473  1
  Zn  Zn3  2  0.5000  0.0000  0.9516  1
]