The material described by K2PbO3 is Caswellsilverite-like structured and crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second K site, K(2) is bonded to six equivalent O(1) atoms to form KO6 octahedra that share edges with six equivalent Pb(1)O6 octahedra. Pb(1) is bonded to six equivalent O(1) atoms to form PbO6 octahedra that share edges with three equivalent K(2)O6 octahedra and edges with three equivalent Pb(1)O6 octahedra. O(1) is bonded to one K(2), three equivalent K(1), and two equivalent Pb(1) atoms to form a mixture of distorted face, corner, and edge-sharing OK4Pb2 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2PbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.023
_cell_length_b   6.023
_cell_length_c   12.417
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   390.095
_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  0.000  0.688  0.250  1.0
  K  K1  1  0.312  0.312  0.250  1.0
  K  K2  1  1.000  0.312  0.750  1.0
  K  K3  1  0.688  1.000  0.250  1.0
  K  K4  1  1.000  1.000  1.000  1.0
  K  K5  1  0.688  0.688  0.750  1.0
  K  K6  1  0.000  0.000  0.500  1.0
  K  K7  1  0.312  1.000  0.750  1.0
  Pb  Pb8  1  0.667  0.333  0.500  1.0
  Pb  Pb9  1  0.333  0.667  0.500  1.0
  Pb  Pb10  1  0.667  0.333  1.000  1.0
  Pb  Pb11  1  0.333  0.667  1.000  1.0
  O  O12  1  0.000  0.614  0.900  1.0
  O  O13  1  0.614  1.000  0.900  1.0
  O  O14  1  0.614  0.614  0.100  1.0
  O  O15  1  0.000  0.386  0.400  1.0
  O  O16  1  0.386  0.000  0.400  1.0
  O  O17  1  0.386  1.000  0.100  1.0
  O  O18  1  0.614  1.000  0.600  1.0
  O  O19  1  1.000  0.386  0.100  1.0
  O  O20  1  1.000  0.614  0.600  1.0
  O  O21  1  0.614  0.614  0.400  1.0
  O  O22  1  0.386  0.386  0.600  1.0
  O  O23  1  0.386  0.386  0.900  1.0
[/CIF]
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The material described by K2PbO3 is Caswellsilverite-like structured and crystallizes in the hexagonal P6_3/mcm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second K site, K(2) is bonded to six equivalent O(1) atoms to form KO6 octahedra that share edges with six equivalent Pb(1)O6 octahedra. Pb(1) is bonded to six equivalent O(1) atoms to form PbO6 octahedra that share edges with three equivalent K(2)O6 octahedra and edges with three equivalent Pb(1)O6 octahedra. O(1) is bonded to one K(2), three equivalent K(1), and two equivalent Pb(1) atoms to form a mixture of distorted face, corner, and edge-sharing OK4Pb2 octahedra. The corner-sharing octahedral tilt angles range from 0-50°. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2PbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.023
_cell_length_b   6.023
_cell_length_c   12.417
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   390.095
_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  0.000  0.688  0.250  1.0
  K  K1  1  0.312  0.312  0.250  1.0
  K  K2  1  1.000  0.312  0.750  1.0
  K  K3  1  0.688  1.000  0.250  1.0
  K  K4  1  1.000  1.000  1.000  1.0
  K  K5  1  0.688  0.688  0.750  1.0
  K  K6  1  0.000  0.000  0.500  1.0
  K  K7  1  0.312  1.000  0.750  1.0
  Pb  Pb8  1  0.667  0.333  0.500  1.0
  Pb  Pb9  1  0.333  0.667  0.500  1.0
  Pb  Pb10  1  0.667  0.333  1.000  1.0
  Pb  Pb11  1  0.333  0.667  1.000  1.0
  O  O12  1  0.000  0.614  0.900  1.0
  O  O13  1  0.614  1.000  0.900  1.0
  O  O14  1  0.614  0.614  0.100  1.0
  O  O15  1  0.000  0.386  0.400  1.0
  O  O16  1  0.386  0.000  0.400  1.0
  O  O17  1  0.386  1.000  0.100  1.0
  O  O18  1  0.614  1.000  0.600  1.0
  O  O19  1  1.000  0.386  0.100  1.0
  O  O20  1  1.000  0.614  0.600  1.0
  O  O21  1  0.614  0.614  0.400  1.0
  O  O22  1  0.386  0.386  0.600  1.0
  O  O23  1  0.386  0.386  0.900  1.0
[/CIF]
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