data_KY2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.14
_cell_length_b   5.14
_cell_length_c   4.83
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KY2Pb
_chemical_formula_sum   'K1 Y2 Pb1'
_cell_volume   127.34
_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  Y2  1  0.57  0.0  0.41  1.0
  Y  Y3  1  0.0  0.57  0.41  1.0
  Pb  Pb1  1  0.57  0.57  0.0  1.0

data_KY2Pb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.27
_cell_length_b   7.27
_cell_length_c   4.83
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   KY2Pb
_chemical_formula_sum   'K2 Y4 Pb2'
_cell_volume   254.68
_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  4  0.28  0.28  0.41  1.0
  Pb  Pb2  2  0.07  0.5  0.0  1.0

K Y Y Pb
KY2Pb crystallizes in the monoclinic Cm space group. K(1) is bonded in a 12-coordinate geometry to eight equivalent Y(1) and four equivalent Pb(1) atoms. There are a spread of K(1)-Y(1) bond distances ranging from 2.98-4.07 Å. There are a spread of K(1)-Pb(1) bond distances ranging from 3.13-4.13 Å. Y(1) is bonded in a 6-coordinate geometry to four equivalent K(1) and three equivalent Pb(1) atoms. There are a spread of Y(1)-Pb(1) bond distances ranging from 2.98-3.60 Å. Pb(1) is bonded in a 9-coordinate geometry to four equivalent K(1) and six equivalent Y(1) atoms.