The material structure described by Pb8O5(AsO4)2 crystallizes in the monoclinic C2/m space group. There are six inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(2), and two equivalent O(6) atoms. In the second Pb site, Pb(2) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(8) atoms. In the third Pb site, Pb(3) is bonded in a 3-coordinate geometry to one O(1), one O(4), and one O(8) atom. In the fourth Pb site, Pb(4) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(2), and two equivalent O(4) atoms. In the fifth Pb site, Pb(5) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom. In the sixth Pb site, Pb(6) is bonded in a distorted pentagonal planar geometry to one O(3), two equivalent O(4), and two equivalent O(8) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a tetrahedral geometry to one O(3), one O(5), and two equivalent O(1) atoms. In the second As site, As(2) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(6) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Pb(3), one Pb(5), and one As(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(4), one Pb(5), and one As(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Pb(6) and one As(1) atom. In the fourth O site, O(4) is bonded to one Pb(3), one Pb(4), one Pb(5), and one Pb(6) atom to form a mixture of corner and edge-sharing OPb4 tetrahedra. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Pb(2) and one As(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(5), and one As(2) atom. In the seventh O site, O(7) is bonded to one Pb(1), one Pb(4), and two equivalent Pb(5) atoms to form a mixture of distorted corner and edge-sharing OPb4 tetrahedra. In the eighth O site, O(8) is bonded to one Pb(2), one Pb(3), one Pb(5), and one Pb(6) atom to form a mixture of corner and edge-sharing OPb4 tetrahedra. is represented by the CIF card [CIF]
data_As2Pb8O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.555
_cell_length_b   7.555
_cell_length_c   14.722
_cell_angle_alpha   84.059
_cell_angle_beta   84.059
_cell_angle_gamma   88.055
_symmetry_Int_Tables_number   1
_cell_volume   831.111
_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
  As  As0  1  0.156  0.156  0.905  1.0
  As  As1  1  0.253  0.747  0.500  1.0
  As  As2  1  0.747  0.253  0.500  1.0
  As  As3  1  0.844  0.844  0.095  1.0
  Pb  Pb4  1  0.260  0.260  0.483  1.0
  Pb  Pb5  1  0.566  0.566  0.284  1.0
  Pb  Pb6  1  0.841  0.334  0.096  1.0
  Pb  Pb7  1  0.666  0.159  0.904  1.0
  Pb  Pb8  1  0.740  0.740  0.517  1.0
  Pb  Pb9  1  0.073  0.073  0.300  1.0
  Pb  Pb10  1  0.075  0.544  0.295  1.0
  Pb  Pb11  1  0.159  0.666  0.904  1.0
  Pb  Pb12  1  0.434  0.434  0.716  1.0
  Pb  Pb13  1  0.456  0.925  0.705  1.0
  Pb  Pb14  1  0.330  0.330  0.117  1.0
  Pb  Pb15  1  0.670  0.670  0.883  1.0
  Pb  Pb16  1  0.544  0.075  0.295  1.0
  Pb  Pb17  1  0.925  0.456  0.705  1.0
  Pb  Pb18  1  0.927  0.927  0.700  1.0
  Pb  Pb19  1  0.334  0.841  0.096  1.0
  O  O20  1  0.770  0.037  0.139  1.0
  O  O21  1  0.944  0.267  0.432  1.0
  O  O22  1  0.863  0.863  0.979  1.0
  O  O23  1  0.330  0.045  0.195  1.0
  O  O24  1  0.312  0.312  0.867  1.0
  O  O25  1  0.733  0.056  0.568  1.0
  O  O26  1  0.963  0.230  0.861  1.0
  O  O27  1  0.728  0.422  0.570  1.0
  O  O28  1  0.728  0.728  0.667  1.0
  O  O29  1  0.608  0.327  0.208  1.0
  O  O30  1  0.392  0.673  0.792  1.0
  O  O31  1  0.673  0.392  0.792  1.0
  O  O32  1  0.955  0.670  0.805  1.0
  O  O33  1  0.670  0.955  0.805  1.0
  O  O34  1  0.422  0.728  0.570  1.0
  O  O35  1  0.688  0.688  0.133  1.0
  O  O36  1  0.137  0.137  0.021  1.0
  O  O37  1  0.045  0.330  0.195  1.0
  O  O38  1  0.272  0.272  0.333  1.0
  O  O39  1  0.037  0.770  0.139  1.0
  O  O40  1  0.230  0.963  0.861  1.0
  O  O41  1  0.327  0.608  0.208  1.0
  O  O42  1  0.272  0.578  0.430  1.0
  O  O43  1  0.056  0.733  0.568  1.0
  O  O44  1  0.578  0.272  0.430  1.0
  O  O45  1  0.267  0.944  0.432  1.0
[/CIF]
.
The material structure described by Pb8O5(AsO4)2 crystallizes in the monoclinic C2/m space group. There are six inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(2), and two equivalent O(6) atoms. In the second Pb site, Pb(2) is bonded in a 3-coordinate geometry to one O(5) and two equivalent O(8) atoms. In the third Pb site, Pb(3) is bonded in a 3-coordinate geometry to one O(1), one O(4), and one O(8) atom. In the fourth Pb site, Pb(4) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(2), and two equivalent O(4) atoms. In the fifth Pb site, Pb(5) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(4), one O(6), one O(7), and one O(8) atom. In the sixth Pb site, Pb(6) is bonded in a distorted pentagonal planar geometry to one O(3), two equivalent O(4), and two equivalent O(8) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a tetrahedral geometry to one O(3), one O(5), and two equivalent O(1) atoms. In the second As site, As(2) is bonded in a tetrahedral geometry to two equivalent O(2) and two equivalent O(6) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 1-coordinate geometry to one Pb(3), one Pb(5), and one As(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(4), one Pb(5), and one As(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Pb(6) and one As(1) atom. In the fourth O site, O(4) is bonded to one Pb(3), one Pb(4), one Pb(5), and one Pb(6) atom to form a mixture of corner and edge-sharing OPb4 tetrahedra. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Pb(2) and one As(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Pb(1), one Pb(5), and one As(2) atom. In the seventh O site, O(7) is bonded to one Pb(1), one Pb(4), and two equivalent Pb(5) atoms to form a mixture of distorted corner and edge-sharing OPb4 tetrahedra. In the eighth O site, O(8) is bonded to one Pb(2), one Pb(3), one Pb(5), and one Pb(6) atom to form a mixture of corner and edge-sharing OPb4 tetrahedra. is represented by the CIF card [CIF]
data_As2Pb8O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.555
_cell_length_b   7.555
_cell_length_c   14.722
_cell_angle_alpha   84.059
_cell_angle_beta   84.059
_cell_angle_gamma   88.055
_symmetry_Int_Tables_number   1
_cell_volume   831.111
_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
  As  As0  1  0.156  0.156  0.905  1.0
  As  As1  1  0.253  0.747  0.500  1.0
  As  As2  1  0.747  0.253  0.500  1.0
  As  As3  1  0.844  0.844  0.095  1.0
  Pb  Pb4  1  0.260  0.260  0.483  1.0
  Pb  Pb5  1  0.566  0.566  0.284  1.0
  Pb  Pb6  1  0.841  0.334  0.096  1.0
  Pb  Pb7  1  0.666  0.159  0.904  1.0
  Pb  Pb8  1  0.740  0.740  0.517  1.0
  Pb  Pb9  1  0.073  0.073  0.300  1.0
  Pb  Pb10  1  0.075  0.544  0.295  1.0
  Pb  Pb11  1  0.159  0.666  0.904  1.0
  Pb  Pb12  1  0.434  0.434  0.716  1.0
  Pb  Pb13  1  0.456  0.925  0.705  1.0
  Pb  Pb14  1  0.330  0.330  0.117  1.0
  Pb  Pb15  1  0.670  0.670  0.883  1.0
  Pb  Pb16  1  0.544  0.075  0.295  1.0
  Pb  Pb17  1  0.925  0.456  0.705  1.0
  Pb  Pb18  1  0.927  0.927  0.700  1.0
  Pb  Pb19  1  0.334  0.841  0.096  1.0
  O  O20  1  0.770  0.037  0.139  1.0
  O  O21  1  0.944  0.267  0.432  1.0
  O  O22  1  0.863  0.863  0.979  1.0
  O  O23  1  0.330  0.045  0.195  1.0
  O  O24  1  0.312  0.312  0.867  1.0
  O  O25  1  0.733  0.056  0.568  1.0
  O  O26  1  0.963  0.230  0.861  1.0
  O  O27  1  0.728  0.422  0.570  1.0
  O  O28  1  0.728  0.728  0.667  1.0
  O  O29  1  0.608  0.327  0.208  1.0
  O  O30  1  0.392  0.673  0.792  1.0
  O  O31  1  0.673  0.392  0.792  1.0
  O  O32  1  0.955  0.670  0.805  1.0
  O  O33  1  0.670  0.955  0.805  1.0
  O  O34  1  0.422  0.728  0.570  1.0
  O  O35  1  0.688  0.688  0.133  1.0
  O  O36  1  0.137  0.137  0.021  1.0
  O  O37  1  0.045  0.330  0.195  1.0
  O  O38  1  0.272  0.272  0.333  1.0
  O  O39  1  0.037  0.770  0.139  1.0
  O  O40  1  0.230  0.963  0.861  1.0
  O  O41  1  0.327  0.608  0.208  1.0
  O  O42  1  0.272  0.578  0.430  1.0
  O  O43  1  0.056  0.733  0.568  1.0
  O  O44  1  0.578  0.272  0.430  1.0
  O  O45  1  0.267  0.944  0.432  1.0
[/CIF]
.