data_K2AlSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.66
_cell_length_b   6.66
_cell_length_c   4.68
_cell_angle_alpha   93.07
_cell_angle_beta   93.07
_cell_angle_gamma   41.99
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2AlSe
_chemical_formula_sum   'K2 Al1 Se1'
_cell_volume   138.62
_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  0.97  0.0  0.28  1.0
  K  K2  1  0.27  0.0  0.58  1.0
  Al  Al0  1  0.35  0.0  0.88  1.0
  Se  Se3  1  0.81  0.0  0.96  1.0

data_K2AlSe
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.68
_cell_length_b   4.77
_cell_length_c   6.66
_cell_angle_alpha   111.0
_cell_angle_beta   93.07
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2AlSe
_chemical_formula_sum   'K2 Al1 Se1'
_cell_volume   138.62
_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  K0  1  0.42  0.0  0.73  1.0
  K  K1  1  0.72  0.0  0.03  1.0
  Al  Al2  1  0.12  0.0  0.65  1.0
  Se  Se3  1  0.04  0.0  0.19  1.0

K K Al Se