data_KYO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.58
_cell_length_b   6.58
_cell_length_c   6.58
_cell_angle_alpha   30.76
_cell_angle_beta   30.76
_cell_angle_gamma   30.76
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KYO2
_chemical_formula_sum   'K1 Y1 O2'
_cell_volume   66.14
_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  0.0  0.0  0.0  1.0
  Y  Y1  1  0.0  0.0  0.4  1.0
  O  O2  1  0.0  0.0  0.3  1.0
  O  O3  1  0.0  0.0  0.5  1.0

data_KYO2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.05
_cell_length_b   3.49
_cell_length_c   6.58
_cell_angle_alpha   90.0
_cell_angle_beta   107.83
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KYO2
_chemical_formula_sum   'K2 Y2 O4'
_cell_volume   132.27
_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  0.0  0.0  0.0  1.0
  Y  Y1  2  0.0  0.0  0.6  1.0
  O  O2  2  0.0  0.0  0.5  1.0
  O  O3  2  0.0  0.0  0.7  1.0

K Y O O
K Y O O 0 2 o o o 1 2 o o o 1 3 o o o 