The material structure described by PbBi6O4(PO4)4 crystallizes in the triclinic P-1 space group. Pb(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(10), one O(2), one O(4), one O(7), and one O(8) atom to form distorted BiO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(3), one O(5), one O(6), one O(7), and two equivalent O(4) atoms. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(3), one O(5), one O(8), one O(9), and two equivalent O(7) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(10), one O(3), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid. In the second P site, P(2) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Bi(1)O5 square pyramids. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Pb(1), one Bi(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1), one Bi(1), and one P(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Bi(2), one Bi(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Pb(1), one Bi(1), and two equivalent Bi(2) atoms. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Bi(2), one Bi(3), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Pb(1), one Bi(2), and one P(2) atom. In the seventh O site, O(7) is bonded to one Bi(1), one Bi(2), and two equivalent Bi(3) atoms to form edge-sharing OBi4 tetrahedra. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one Bi(1), one Bi(3), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Bi(3) and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Bi(1), one Bi(2), and one P(1) atom. is represented by the CIF card [CIF]
data_Bi6P4PbO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.053
_cell_length_b   7.740
_cell_length_c   9.298
_cell_angle_alpha   107.118
_cell_angle_beta   93.192
_cell_angle_gamma   111.957
_symmetry_Int_Tables_number   1
_cell_volume   441.994
_cell_formula_units_Z   1
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
  Bi  Bi0  1  0.194  0.696  0.675  1.0
  Bi  Bi1  1  0.806  0.304  0.325  1.0
  Bi  Bi2  1  0.561  0.207  0.912  1.0
  Bi  Bi3  1  0.439  0.793  0.088  1.0
  Bi  Bi4  1  0.668  0.874  0.490  1.0
  Bi  Bi5  1  0.332  0.126  0.510  1.0
  P  P6  1  0.953  0.730  0.244  1.0
  P  P7  1  0.047  0.270  0.756  1.0
  P  P8  1  0.350  0.401  0.258  1.0
  P  P9  1  0.650  0.599  0.742  1.0
  Pb  Pb10  1  0.000  0.000  0.000  1.0
  O  O11  1  0.123  0.826  0.158  1.0
  O  O12  1  0.877  0.174  0.842  1.0
  O  O13  1  0.134  0.268  0.283  1.0
  O  O14  1  0.866  0.732  0.717  1.0
  O  O15  1  0.786  0.817  0.241  1.0
  O  O16  1  0.214  0.183  0.759  1.0
  O  O17  1  0.676  0.094  0.097  1.0
  O  O18  1  0.324  0.906  0.903  1.0
  O  O19  1  0.378  0.621  0.313  1.0
  O  O20  1  0.622  0.379  0.687  1.0
  O  O21  1  0.357  0.330  0.085  1.0
  O  O22  1  0.643  0.670  0.915  1.0
  O  O23  1  0.554  0.028  0.363  1.0
  O  O24  1  0.446  0.972  0.637  1.0
  O  O25  1  0.522  0.380  0.356  1.0
  O  O26  1  0.478  0.620  0.644  1.0
  O  O27  1  0.048  0.790  0.416  1.0
  O  O28  1  0.952  0.210  0.584  1.0
  O  O29  1  0.856  0.500  0.169  1.0
  O  O30  1  0.144  0.500  0.831  1.0
[/CIF]
.
The material structure described by PbBi6O4(PO4)4 crystallizes in the triclinic P-1 space group. Pb(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(6) atoms. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(10), one O(2), one O(4), one O(7), and one O(8) atom to form distorted BiO5 square pyramids that share  a cornercorner with one P(1)O4 tetrahedra and corners with two equivalent P(2)O4 tetrahedra. In the second Bi site, Bi(2) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(3), one O(5), one O(6), one O(7), and two equivalent O(4) atoms. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(3), one O(5), one O(8), one O(9), and two equivalent O(7) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(10), one O(3), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Bi(1)O5 square pyramid. In the second P site, P(2) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Bi(1)O5 square pyramids. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Pb(1), one Bi(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Pb(1), one Bi(1), and one P(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Bi(2), one Bi(3), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Pb(1), one Bi(1), and two equivalent Bi(2) atoms. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Bi(2), one Bi(3), and one P(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Pb(1), one Bi(2), and one P(2) atom. In the seventh O site, O(7) is bonded to one Bi(1), one Bi(2), and two equivalent Bi(3) atoms to form edge-sharing OBi4 tetrahedra. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one Bi(1), one Bi(3), and one P(2) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one Bi(3) and one P(1) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Bi(1), one Bi(2), and one P(1) atom. is represented by the CIF card [CIF]
data_Bi6P4PbO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.053
_cell_length_b   7.740
_cell_length_c   9.298
_cell_angle_alpha   107.118
_cell_angle_beta   93.192
_cell_angle_gamma   111.957
_symmetry_Int_Tables_number   1
_cell_volume   441.994
_cell_formula_units_Z   1
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
  Bi  Bi0  1  0.194  0.696  0.675  1.0
  Bi  Bi1  1  0.806  0.304  0.325  1.0
  Bi  Bi2  1  0.561  0.207  0.912  1.0
  Bi  Bi3  1  0.439  0.793  0.088  1.0
  Bi  Bi4  1  0.668  0.874  0.490  1.0
  Bi  Bi5  1  0.332  0.126  0.510  1.0
  P  P6  1  0.953  0.730  0.244  1.0
  P  P7  1  0.047  0.270  0.756  1.0
  P  P8  1  0.350  0.401  0.258  1.0
  P  P9  1  0.650  0.599  0.742  1.0
  Pb  Pb10  1  0.000  0.000  0.000  1.0
  O  O11  1  0.123  0.826  0.158  1.0
  O  O12  1  0.877  0.174  0.842  1.0
  O  O13  1  0.134  0.268  0.283  1.0
  O  O14  1  0.866  0.732  0.717  1.0
  O  O15  1  0.786  0.817  0.241  1.0
  O  O16  1  0.214  0.183  0.759  1.0
  O  O17  1  0.676  0.094  0.097  1.0
  O  O18  1  0.324  0.906  0.903  1.0
  O  O19  1  0.378  0.621  0.313  1.0
  O  O20  1  0.622  0.379  0.687  1.0
  O  O21  1  0.357  0.330  0.085  1.0
  O  O22  1  0.643  0.670  0.915  1.0
  O  O23  1  0.554  0.028  0.363  1.0
  O  O24  1  0.446  0.972  0.637  1.0
  O  O25  1  0.522  0.380  0.356  1.0
  O  O26  1  0.478  0.620  0.644  1.0
  O  O27  1  0.048  0.790  0.416  1.0
  O  O28  1  0.952  0.210  0.584  1.0
  O  O29  1  0.856  0.500  0.169  1.0
  O  O30  1  0.144  0.500  0.831  1.0
[/CIF]
.