The compound described by KPbO2 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(4), one O(5), and one O(6) atom. In the second K site, K(2) is bonded in a 2-coordinate geometry to one O(2), one O(3), one O(6), and one O(7) atom. In the third K site, K(3) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(4), one O(5), and one O(6) atom. In the fourth K site, K(4) is bonded in a 2-coordinate geometry to one O(1), one O(4), one O(5), and one O(8) atom. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted T-shaped geometry to one O(4), one O(5), and one O(8) atom. In the second Pb site, Pb(2) is bonded in a distorted T-shaped geometry to one O(2), one O(3), and one O(6) atom. In the third Pb site, Pb(3) is bonded in a 2-coordinate geometry to one O(1), one O(3), one O(6), one O(7), and one O(8) atom. In the fourth Pb site, Pb(4) is bonded in a 2-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(4), one Pb(3), and one Pb(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one K(3), and one Pb(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(2), one Pb(2), one Pb(3), and one Pb(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one K(1), one K(3), one K(4), and one Pb(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one K(1), one K(3), one K(4), one Pb(1), and one Pb(4) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one Pb(2), and one Pb(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(2), one Pb(3), and one Pb(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one K(4), one Pb(1), one Pb(3), and one Pb(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KPbO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.542
_cell_length_b   7.123
_cell_length_c   7.623
_cell_angle_alpha   117.539
_cell_angle_beta   105.452
_cell_angle_gamma   90.938
_symmetry_Int_Tables_number   1
_cell_volume   299.494
_cell_formula_units_Z   4
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  0.470  0.751  0.005  1.0
  K  K1  1  0.016  0.257  0.257  1.0
  K  K2  1  0.530  0.249  0.995  1.0
  K  K3  1  0.984  0.743  0.743  1.0
  O  O4  1  0.687  0.511  0.599  1.0
  O  O5  1  0.313  0.489  0.401  1.0
  O  O6  1  0.277  0.971  0.802  1.0
  O  O7  1  0.723  0.029  0.198  1.0
  O  O8  1  0.287  0.022  0.431  1.0
  O  O9  1  0.713  0.978  0.569  1.0
  O  O10  1  0.710  0.568  0.206  1.0
  O  O11  1  0.290  0.432  0.794  1.0
  Pb  Pb12  1  0.932  0.771  0.260  1.0
  Pb  Pb13  1  0.068  0.229  0.740  1.0
  Pb  Pb14  1  0.508  0.260  0.499  1.0
  Pb  Pb15  1  0.492  0.740  0.501  1.0
[/CIF]
.
The compound described by KPbO2 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(4), one O(5), and one O(6) atom. In the second K site, K(2) is bonded in a 2-coordinate geometry to one O(2), one O(3), one O(6), and one O(7) atom. In the third K site, K(3) is bonded in a distorted rectangular see-saw-like geometry to one O(2), one O(4), one O(5), and one O(6) atom. In the fourth K site, K(4) is bonded in a 2-coordinate geometry to one O(1), one O(4), one O(5), and one O(8) atom. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted T-shaped geometry to one O(4), one O(5), and one O(8) atom. In the second Pb site, Pb(2) is bonded in a distorted T-shaped geometry to one O(2), one O(3), and one O(6) atom. In the third Pb site, Pb(3) is bonded in a 2-coordinate geometry to one O(1), one O(3), one O(6), one O(7), and one O(8) atom. In the fourth Pb site, Pb(4) is bonded in a 2-coordinate geometry to one O(1), one O(3), one O(5), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(4), one Pb(3), and one Pb(4) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one K(3), and one Pb(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(2), one Pb(2), one Pb(3), and one Pb(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one K(1), one K(3), one K(4), and one Pb(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one K(1), one K(3), one K(4), one Pb(1), and one Pb(4) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one K(1), one K(2), one K(3), one Pb(2), and one Pb(3) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(2), one Pb(3), and one Pb(4) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one K(4), one Pb(1), one Pb(3), and one Pb(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KPbO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.542
_cell_length_b   7.123
_cell_length_c   7.623
_cell_angle_alpha   117.539
_cell_angle_beta   105.452
_cell_angle_gamma   90.938
_symmetry_Int_Tables_number   1
_cell_volume   299.494
_cell_formula_units_Z   4
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  0.470  0.751  0.005  1.0
  K  K1  1  0.016  0.257  0.257  1.0
  K  K2  1  0.530  0.249  0.995  1.0
  K  K3  1  0.984  0.743  0.743  1.0
  O  O4  1  0.687  0.511  0.599  1.0
  O  O5  1  0.313  0.489  0.401  1.0
  O  O6  1  0.277  0.971  0.802  1.0
  O  O7  1  0.723  0.029  0.198  1.0
  O  O8  1  0.287  0.022  0.431  1.0
  O  O9  1  0.713  0.978  0.569  1.0
  O  O10  1  0.710  0.568  0.206  1.0
  O  O11  1  0.290  0.432  0.794  1.0
  Pb  Pb12  1  0.932  0.771  0.260  1.0
  Pb  Pb13  1  0.068  0.229  0.740  1.0
  Pb  Pb14  1  0.508  0.260  0.499  1.0
  Pb  Pb15  1  0.492  0.740  0.501  1.0
[/CIF]
.