data_KSr2Nb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.48
_cell_length_b   7.48
_cell_length_c   6.35
_cell_angle_alpha   110.9
_cell_angle_beta   110.9
_cell_angle_gamma   32.23
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KSr2Nb
_chemical_formula_sum   'K1 Sr2 Nb1'
_cell_volume   175.87
_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  0.52  0.0  0.89  1.0
  Sr  Sr2  1  0.46  0.0  0.39  1.0
  Sr  Sr3  1  0.84  0.0  0.33  1.0
  Nb  Nb1  1  0.2  0.0  0.23  1.0

data_KSr2Nb
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.15
_cell_length_b   6.35
_cell_length_c   7.48
_cell_angle_alpha   110.9
_cell_angle_beta   106.11
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KSr2Nb
_chemical_formula_sum   'K1 Sr2 Nb1'
_cell_volume   175.87
_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  0.89  0.52  1.0
  Sr  Sr1  1  0.0  0.33  0.84  1.0
  Sr  Sr2  1  0.0  0.39  0.46  1.0
  Nb  Nb3  1  0.0  0.23  0.2  1.0

K Sr Sr Nb