data_K2NaCr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.2
_cell_length_b   4.2
_cell_length_c   10.27
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2NaCr
_chemical_formula_sum   'K2 Na1 Cr1'
_cell_volume   181.43
_cell_formula_units_Z   1
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  K1  1  0.1  0.1  0.36  1.0
  K  K2  1  0.1  0.1  0.92  1.0
  Na  Na3  1  0.0  0.0  0.0  1.0
  Cr  Cr0  1  0.0  0.0  0.14  1.0

data_K2NaCr
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.94
_cell_length_b   5.94
_cell_length_c   10.27
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2NaCr
_chemical_formula_sum   'K4 Na2 Cr2'
_cell_volume   362.87
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  0.1  0.0  0.36  1.0
  K  K1  2  0.1  0.0  0.92  1.0
  Na  Na2  2  0.0  0.0  0.0  1.0
  Cr  Cr3  2  0.0  0.0  0.14  1.0

K K Na Cr