data_K2LiPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.8
_cell_length_b   4.8
_cell_length_c   6.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K2LiPb
_chemical_formula_sum   'K2 Li1 Pb1'
_cell_volume   158.28
_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  0.4  0.4  0.08  1.0
  K  K1  1  0.4  0.4  0.78  1.0
  Li  Li2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.0  0.0  0.43  1.0

data_K2LiPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.79
_cell_length_b   6.79
_cell_length_c   6.87
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   K2LiPb
_chemical_formula_sum   'K4 Li2 Pb2'
_cell_volume   316.57
_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  0.4  0.0  0.08  1.0
  K  K1  2  0.4  0.0  0.78  1.0
  Li  Li2  2  0.0  0.0  0.0  1.0
  Pb  Pb3  2  0.0  0.0  0.43  1.0

K K Li Pb
K2LiPb crystallizes in the monoclinic Cm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one K(2), three equivalent Li(1), and one Pb(1) atom. The K(1)-K(2) bond length is 2.07 Å. There is one shorter (2.78 Å) and two longer (3.51 Å) K(1)-Li(1) bond lengths. The K(1)-Pb(1) bond length is 3.63 Å. In the second K site, K(2) is bonded in a 7-coordinate geometry to one K(1), three equivalent Li(1), and three equivalent Pb(1) atoms. There is one shorter (3.10 Å) and two longer (3.77 Å) K(2)-Li(1) bond lengths. There is one shorter (3.63 Å) and two longer (4.21 Å) K(2)-Pb(1) bond lengths. Li(1) is bonded in a 1-coordinate geometry to three equivalent K(1), three equivalent K(2), and one Pb(1) atom. The Li(1)-Pb(1) bond length is 2.98 Å. Pb(1) is bonded in a 3-coordinate geometry to one K(1), three equivalent K(2), and one Li(1) atom.