data_K2Na
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.59
_cell_length_b   11.59
_cell_length_c   4.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2Na
_chemical_formula_sum   'K6 Na3'
_cell_volume   537.47
_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  1  0.28  0.0  0.31  1.0
  K  K1  1  0.36  0.84  0.31  1.0
  K  K2  1  0.16  0.2  0.31  1.0
  K  K3  1  0.17  0.0  0.0  1.0
  K  K4  1  0.42  0.21  0.0  1.0
  K  K5  1  0.21  0.83  0.0  1.0
  Na  Na6  1  0.0  0.69  0.31  1.0
  Na  Na7  1  0.8  0.35  0.31  1.0
  Na  Na8  1  0.0  0.0  0.0  1.0

data_K2Na
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.62
_cell_length_b   11.59
_cell_length_c   11.59
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2Na
_chemical_formula_sum   'K6 Na3'
_cell_volume   537.47
_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  1  0.0  0.17  0.0  1.0
  K  K1  1  0.0  0.21  0.83  1.0
  K  K2  1  0.0  0.42  0.21  1.0
  K  K3  1  0.31  0.16  0.2  1.0
  K  K4  1  0.31  0.28  0.0  1.0
  K  K5  1  0.31  0.36  0.84  1.0
  Na  Na6  1  0.0  0.0  0.0  1.0
  Na  Na7  1  0.31  0.0  0.69  1.0
  Na  Na8  1  0.31  0.8  0.35  1.0

K K K K K K Na Na Na