data_K2SiSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.63
_cell_length_b   11.63
_cell_length_c   11.63
_cell_angle_alpha   17.44
_cell_angle_beta   17.44
_cell_angle_gamma   17.44
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2SiSb
_chemical_formula_sum   'K2 Si1 Sb1'
_cell_volume   123.16
_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  0.65  1.0
  K  K1  1  0.0  0.0  0.69  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Sb  Sb2  1  0.0  0.0  0.17  1.0

data_K2SiSb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.1
_cell_length_b   3.52
_cell_length_c   11.63
_cell_angle_alpha   90.0
_cell_angle_beta   100.08
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2SiSb
_chemical_formula_sum   'K4 Si2 Sb2'
_cell_volume   246.32
_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  0.31  1.0
  K  K1  2  0.0  0.0  0.35  1.0
  Si  Si2  2  0.0  0.0  0.0  1.0
  Sb  Sb3  2  0.0  0.0  0.83  1.0

K K Si Sb
K K Si Sb 0 1 o o o 2 3 o o o 