data_KGePb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.58
_cell_length_b   5.26
_cell_length_c   6.98
_cell_angle_alpha   90.0
_cell_angle_beta   99.87
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KGePb2
_chemical_formula_sum   'K1 Ge1 Pb2'
_cell_volume   129.35
_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  K1  1  0.0  0.0  0.0  1.0
  Ge  Ge0  1  0.19  0.0  0.44  1.0
  Pb  Pb2  1  0.13  0.63  0.11  1.0
  Pb  Pb3  1  0.25  0.63  0.77  1.0

data_KGePb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.58
_cell_length_b   5.26
_cell_length_c   6.98
_cell_angle_alpha   90.0
_cell_angle_beta   99.87
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KGePb2
_chemical_formula_sum   'K1 Ge1 Pb2'
_cell_volume   129.35
_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
  Ge  Ge1  1  0.19  0.0  0.44  1.0
  Pb  Pb2  1  0.13  0.63  0.11  1.0
  Pb  Pb3  1  0.25  0.63  0.77  1.0

K Ge Pb Pb
KPb2Ge crystallizes in the triclinic P1 space group. K(1) is bonded in a distorted single-bond geometry to one Pb(1), three equivalent Pb(2), and one Ge(1) atom. The K(1)-Pb(1) bond length is 2.10 Å. There are a spread of K(1)-Pb(2) bond distances ranging from 2.77-3.87 Å. The K(1)-Ge(1) bond length is 3.01 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted single-bond geometry to one K(1), one Pb(2), and one Ge(1) atom. The Pb(1)-Pb(2) bond length is 2.47 Å. The Pb(1)-Ge(1) bond length is 3.00 Å. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to three equivalent K(1), one Pb(1), and one Ge(1) atom. The Pb(2)-Ge(1) bond length is 3.00 Å. Ge(1) is bonded in a 3-coordinate geometry to one K(1), one Pb(1), and one Pb(2) atom.