The compound described by Rb3PbO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. Pb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted edge-sharing PbO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), two equivalent Rb(2), and two equivalent Pb(1) atoms. In the second O site, O(2) is bonded to two equivalent Rb(1), two equivalent Rb(2), two equivalent Rb(3), and one Pb(1) atom to form a mixture of distorted edge, corner, and face-sharing ORb6Pb pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3PbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.352
_cell_length_b   7.352
_cell_length_c   7.311
_cell_angle_alpha   85.662
_cell_angle_beta   85.662
_cell_angle_gamma   115.286
_symmetry_Int_Tables_number   1
_cell_volume   353.662
_cell_formula_units_Z   2
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
  Rb  Rb0  1  0.639  0.639  0.643  1.0
  Rb  Rb1  1  0.196  0.804  0.500  1.0
  Rb  Rb2  1  0.804  0.196  0.500  1.0
  Rb  Rb3  1  0.744  0.256  0.000  1.0
  Rb  Rb4  1  0.256  0.744  0.000  1.0
  Rb  Rb5  1  0.361  0.361  0.357  1.0
  Pb  Pb6  1  0.806  0.806  0.141  1.0
  Pb  Pb7  1  0.194  0.194  0.859  1.0
  O  O8  1  0.917  0.917  0.827  1.0
  O  O9  1  0.838  0.547  0.278  1.0
  O  O10  1  0.547  0.838  0.278  1.0
  O  O11  1  0.453  0.162  0.722  1.0
  O  O12  1  0.162  0.453  0.722  1.0
  O  O13  1  0.083  0.083  0.173  1.0
[/CIF]
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The compound described by Rb3PbO3 crystallizes in the monoclinic C2/m space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(2) atoms. In the third Rb site, Rb(3) is bonded in a 4-coordinate geometry to four equivalent O(2) atoms. Pb(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form distorted edge-sharing PbO4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), two equivalent Rb(2), and two equivalent Pb(1) atoms. In the second O site, O(2) is bonded to two equivalent Rb(1), two equivalent Rb(2), two equivalent Rb(3), and one Pb(1) atom to form a mixture of distorted edge, corner, and face-sharing ORb6Pb pentagonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3PbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.352
_cell_length_b   7.352
_cell_length_c   7.311
_cell_angle_alpha   85.662
_cell_angle_beta   85.662
_cell_angle_gamma   115.286
_symmetry_Int_Tables_number   1
_cell_volume   353.662
_cell_formula_units_Z   2
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
  Rb  Rb0  1  0.639  0.639  0.643  1.0
  Rb  Rb1  1  0.196  0.804  0.500  1.0
  Rb  Rb2  1  0.804  0.196  0.500  1.0
  Rb  Rb3  1  0.744  0.256  0.000  1.0
  Rb  Rb4  1  0.256  0.744  0.000  1.0
  Rb  Rb5  1  0.361  0.361  0.357  1.0
  Pb  Pb6  1  0.806  0.806  0.141  1.0
  Pb  Pb7  1  0.194  0.194  0.859  1.0
  O  O8  1  0.917  0.917  0.827  1.0
  O  O9  1  0.838  0.547  0.278  1.0
  O  O10  1  0.547  0.838  0.278  1.0
  O  O11  1  0.453  0.162  0.722  1.0
  O  O12  1  0.162  0.453  0.722  1.0
  O  O13  1  0.083  0.083  0.173  1.0
[/CIF]
.