The material described by Pb4O(BO3)2 crystallizes in the orthorhombic Aea2 space group. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(4), and one O(5) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(7), and one O(8) atom. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(6) atom to form a mixture of distorted corner and edge-sharing PbO5 square pyramids. In the second Pb site, Pb(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(7) atom to form a mixture of distorted corner and edge-sharing PbO5 square pyramids. In the third Pb site, Pb(3) is bonded in a 3-coordinate geometry to one O(2), one O(4), and one O(5) atom. In the fourth Pb site, Pb(4) is bonded in a distorted T-shaped geometry to one O(2), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to one B(1), one Pb(1), and one Pb(3) atom. In the second O site, O(6) is bonded to two equivalent Pb(1) and two equivalent Pb(4) atoms to form distorted edge-sharing OPb4 trigonal pyramids. In the third O site, O(7) is bonded in a distorted single-bond geometry to one B(2), one Pb(2), and one Pb(4) atom. In the fourth O site, O(8) is bonded in a bent 120 degrees geometry to two equivalent B(2) atoms. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one B(1), one Pb(2), and one Pb(3) atom. In the sixth O site, O(1) is bonded in a distorted single-bond geometry to one B(1), one Pb(1), and one Pb(2) atom. In the seventh O site, O(2) is bonded to one Pb(1), one Pb(2), one Pb(3), and one Pb(4) atom to form edge-sharing OPb4 tetrahedra. In the eighth O site, O(3) is bonded in a distorted single-bond geometry to one B(2), one Pb(1), and one Pb(2) atom. is represented by the CIF file [CIF]
data_B2Pb4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.539
_cell_length_b   7.539
_cell_length_c   15.763
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   94.792
_symmetry_Int_Tables_number   1
_cell_volume   892.886
_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
  B  B0  1  0.609  0.364  0.755  1.0
  B  B1  1  0.364  0.609  0.245  1.0
  B  B2  1  0.109  0.864  0.745  1.0
  B  B3  1  0.864  0.109  0.255  1.0
  B  B4  1  0.597  0.373  0.008  1.0
  B  B5  1  0.373  0.597  0.992  1.0
  B  B6  1  0.097  0.873  0.492  1.0
  B  B7  1  0.873  0.097  0.508  1.0
  Pb  Pb8  1  0.773  0.681  0.882  1.0
  Pb  Pb9  1  0.681  0.773  0.118  1.0
  Pb  Pb10  1  0.273  0.181  0.618  1.0
  Pb  Pb11  1  0.181  0.273  0.382  1.0
  Pb  Pb12  1  0.421  0.025  0.876  1.0
  Pb  Pb13  1  0.025  0.421  0.124  1.0
  Pb  Pb14  1  0.921  0.525  0.624  1.0
  Pb  Pb15  1  0.525  0.921  0.376  1.0
  Pb  Pb16  1  0.768  0.018  0.700  1.0
  Pb  Pb17  1  0.018  0.768  0.300  1.0
  Pb  Pb18  1  0.268  0.518  0.800  1.0
  Pb  Pb19  1  0.518  0.268  0.200  1.0
  Pb  Pb20  1  0.903  0.151  0.918  1.0
  Pb  Pb21  1  0.151  0.903  0.082  1.0
  Pb  Pb22  1  0.403  0.651  0.582  1.0
  Pb  Pb23  1  0.651  0.403  0.418  1.0
  O  O24  1  0.470  0.230  0.759  1.0
  O  O25  1  0.230  0.470  0.241  1.0
  O  O26  1  0.970  0.730  0.741  1.0
  O  O27  1  0.730  0.970  0.259  1.0
  O  O28  1  0.708  0.963  0.841  1.0
  O  O29  1  0.963  0.708  0.159  1.0
  O  O30  1  0.208  0.463  0.659  1.0
  O  O31  1  0.463  0.208  0.341  1.0
  O  O32  1  0.481  0.718  0.946  1.0
  O  O33  1  0.718  0.481  0.054  1.0
  O  O34  1  0.981  0.218  0.554  1.0
  O  O35  1  0.218  0.981  0.446  1.0
  O  O36  1  0.782  0.322  0.738  1.0
  O  O37  1  0.322  0.782  0.262  1.0
  O  O38  1  0.282  0.822  0.762  1.0
  O  O39  1  0.822  0.282  0.238  1.0
  O  O40  1  0.071  0.040  0.734  1.0
  O  O41  1  0.040  0.071  0.266  1.0
  O  O42  1  0.571  0.540  0.766  1.0
  O  O43  1  0.540  0.571  0.234  1.0
  O  O44  1  0.910  0.910  0.000  1.0
  O  O45  1  0.410  0.410  0.500  1.0
  O  O46  1  0.636  0.217  0.970  1.0
  O  O47  1  0.217  0.636  0.030  1.0
  O  O48  1  0.136  0.717  0.530  1.0
  O  O49  1  0.717  0.136  0.470  1.0
  O  O50  1  0.419  0.419  0.000  1.0
  O  O51  1  0.919  0.919  0.500  1.0
[/CIF]
.
The material described by Pb4O(BO3)2 crystallizes in the orthorhombic Aea2 space group. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(4), and one O(5) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(3), one O(7), and one O(8) atom. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(1), one O(2), one O(3), one O(5), and one O(6) atom to form a mixture of distorted corner and edge-sharing PbO5 square pyramids. In the second Pb site, Pb(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(7) atom to form a mixture of distorted corner and edge-sharing PbO5 square pyramids. In the third Pb site, Pb(3) is bonded in a 3-coordinate geometry to one O(2), one O(4), and one O(5) atom. In the fourth Pb site, Pb(4) is bonded in a distorted T-shaped geometry to one O(2), one O(6), and one O(7) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to one B(1), one Pb(1), and one Pb(3) atom. In the second O site, O(6) is bonded to two equivalent Pb(1) and two equivalent Pb(4) atoms to form distorted edge-sharing OPb4 trigonal pyramids. In the third O site, O(7) is bonded in a distorted single-bond geometry to one B(2), one Pb(2), and one Pb(4) atom. In the fourth O site, O(8) is bonded in a bent 120 degrees geometry to two equivalent B(2) atoms. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one B(1), one Pb(2), and one Pb(3) atom. In the sixth O site, O(1) is bonded in a distorted single-bond geometry to one B(1), one Pb(1), and one Pb(2) atom. In the seventh O site, O(2) is bonded to one Pb(1), one Pb(2), one Pb(3), and one Pb(4) atom to form edge-sharing OPb4 tetrahedra. In the eighth O site, O(3) is bonded in a distorted single-bond geometry to one B(2), one Pb(1), and one Pb(2) atom. is represented by the CIF file [CIF]
data_B2Pb4O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.539
_cell_length_b   7.539
_cell_length_c   15.763
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   94.792
_symmetry_Int_Tables_number   1
_cell_volume   892.886
_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
  B  B0  1  0.609  0.364  0.755  1.0
  B  B1  1  0.364  0.609  0.245  1.0
  B  B2  1  0.109  0.864  0.745  1.0
  B  B3  1  0.864  0.109  0.255  1.0
  B  B4  1  0.597  0.373  0.008  1.0
  B  B5  1  0.373  0.597  0.992  1.0
  B  B6  1  0.097  0.873  0.492  1.0
  B  B7  1  0.873  0.097  0.508  1.0
  Pb  Pb8  1  0.773  0.681  0.882  1.0
  Pb  Pb9  1  0.681  0.773  0.118  1.0
  Pb  Pb10  1  0.273  0.181  0.618  1.0
  Pb  Pb11  1  0.181  0.273  0.382  1.0
  Pb  Pb12  1  0.421  0.025  0.876  1.0
  Pb  Pb13  1  0.025  0.421  0.124  1.0
  Pb  Pb14  1  0.921  0.525  0.624  1.0
  Pb  Pb15  1  0.525  0.921  0.376  1.0
  Pb  Pb16  1  0.768  0.018  0.700  1.0
  Pb  Pb17  1  0.018  0.768  0.300  1.0
  Pb  Pb18  1  0.268  0.518  0.800  1.0
  Pb  Pb19  1  0.518  0.268  0.200  1.0
  Pb  Pb20  1  0.903  0.151  0.918  1.0
  Pb  Pb21  1  0.151  0.903  0.082  1.0
  Pb  Pb22  1  0.403  0.651  0.582  1.0
  Pb  Pb23  1  0.651  0.403  0.418  1.0
  O  O24  1  0.470  0.230  0.759  1.0
  O  O25  1  0.230  0.470  0.241  1.0
  O  O26  1  0.970  0.730  0.741  1.0
  O  O27  1  0.730  0.970  0.259  1.0
  O  O28  1  0.708  0.963  0.841  1.0
  O  O29  1  0.963  0.708  0.159  1.0
  O  O30  1  0.208  0.463  0.659  1.0
  O  O31  1  0.463  0.208  0.341  1.0
  O  O32  1  0.481  0.718  0.946  1.0
  O  O33  1  0.718  0.481  0.054  1.0
  O  O34  1  0.981  0.218  0.554  1.0
  O  O35  1  0.218  0.981  0.446  1.0
  O  O36  1  0.782  0.322  0.738  1.0
  O  O37  1  0.322  0.782  0.262  1.0
  O  O38  1  0.282  0.822  0.762  1.0
  O  O39  1  0.822  0.282  0.238  1.0
  O  O40  1  0.071  0.040  0.734  1.0
  O  O41  1  0.040  0.071  0.266  1.0
  O  O42  1  0.571  0.540  0.766  1.0
  O  O43  1  0.540  0.571  0.234  1.0
  O  O44  1  0.910  0.910  0.000  1.0
  O  O45  1  0.410  0.410  0.500  1.0
  O  O46  1  0.636  0.217  0.970  1.0
  O  O47  1  0.217  0.636  0.030  1.0
  O  O48  1  0.136  0.717  0.530  1.0
  O  O49  1  0.717  0.136  0.470  1.0
  O  O50  1  0.419  0.419  0.000  1.0
  O  O51  1  0.919  0.919  0.500  1.0
[/CIF]
.