The crystal structure described by Pb7O16 crystallizes in the monoclinic C2 space group. There are five inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the second Pb site, Pb(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. In the third Pb site, Pb(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 52-56°. In the fourth Pb site, Pb(4) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. In the fifth Pb site, Pb(5) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(3) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Pb(1), one Pb(4), and one Pb(5) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Pb(3) and one Pb(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Pb(2), one Pb(3), and one Pb(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Pb(2) and one Pb(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Pb(2), one Pb(4), and one Pb(5) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Pb(2) and one Pb(4) atom. is represented by the CIF file [CIF]
data_Pb7O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.888
_cell_length_b   7.888
_cell_length_c   7.584
_cell_angle_alpha   63.914
_cell_angle_beta   63.914
_cell_angle_gamma   98.825
_symmetry_Int_Tables_number   1
_cell_volume   343.663
_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
  Pb  Pb0  1  0.712  0.288  0.500  1.0
  Pb  Pb1  1  0.216  0.288  0.501  1.0
  Pb  Pb2  1  0.287  0.713  0.000  1.0
  Pb  Pb3  1  0.792  0.710  0.978  1.0
  Pb  Pb4  1  0.712  0.784  0.499  1.0
  Pb  Pb5  1  0.791  0.209  0.000  1.0
  Pb  Pb6  1  0.290  0.208  0.022  1.0
  O  O7  1  0.608  0.952  0.677  1.0
  O  O8  1  0.724  0.372  0.174  1.0
  O  O9  1  0.137  0.814  0.816  1.0
  O  O10  1  0.048  0.392  0.323  1.0
  O  O11  1  0.453  0.612  0.175  1.0
  O  O12  1  0.099  0.452  0.679  1.0
  O  O13  1  0.186  0.863  0.184  1.0
  O  O14  1  0.370  0.223  0.686  1.0
  O  O15  1  0.777  0.630  0.314  1.0
  O  O16  1  0.628  0.276  0.826  1.0
  O  O17  1  0.900  0.042  0.823  1.0
  O  O18  1  0.548  0.901  0.321  1.0
  O  O19  1  0.958  0.100  0.177  1.0
  O  O20  1  0.862  0.695  0.679  1.0
  O  O21  1  0.305  0.138  0.321  1.0
  O  O22  1  0.388  0.547  0.825  1.0
[/CIF]
.
The crystal structure described by Pb7O16 crystallizes in the monoclinic C2 space group. There are five inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the second Pb site, Pb(2) is bonded to one O(1), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. In the third Pb site, Pb(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 52-56°. In the fourth Pb site, Pb(4) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. In the fifth Pb site, Pb(5) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(7) atoms to form a mixture of corner and edge-sharing PbO6 octahedra. The corner-sharing octahedral tilt angles range from 51-57°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(3) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Pb(1), one Pb(4), and one Pb(5) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Pb(3) and one Pb(4) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Pb(2), one Pb(3), and one Pb(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Pb(2) and one Pb(5) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Pb(1), one Pb(2), and one Pb(4) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one Pb(2), one Pb(4), and one Pb(5) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Pb(2) and one Pb(4) atom. is represented by the CIF file [CIF]
data_Pb7O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.888
_cell_length_b   7.888
_cell_length_c   7.584
_cell_angle_alpha   63.914
_cell_angle_beta   63.914
_cell_angle_gamma   98.825
_symmetry_Int_Tables_number   1
_cell_volume   343.663
_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
  Pb  Pb0  1  0.712  0.288  0.500  1.0
  Pb  Pb1  1  0.216  0.288  0.501  1.0
  Pb  Pb2  1  0.287  0.713  0.000  1.0
  Pb  Pb3  1  0.792  0.710  0.978  1.0
  Pb  Pb4  1  0.712  0.784  0.499  1.0
  Pb  Pb5  1  0.791  0.209  0.000  1.0
  Pb  Pb6  1  0.290  0.208  0.022  1.0
  O  O7  1  0.608  0.952  0.677  1.0
  O  O8  1  0.724  0.372  0.174  1.0
  O  O9  1  0.137  0.814  0.816  1.0
  O  O10  1  0.048  0.392  0.323  1.0
  O  O11  1  0.453  0.612  0.175  1.0
  O  O12  1  0.099  0.452  0.679  1.0
  O  O13  1  0.186  0.863  0.184  1.0
  O  O14  1  0.370  0.223  0.686  1.0
  O  O15  1  0.777  0.630  0.314  1.0
  O  O16  1  0.628  0.276  0.826  1.0
  O  O17  1  0.900  0.042  0.823  1.0
  O  O18  1  0.548  0.901  0.321  1.0
  O  O19  1  0.958  0.100  0.177  1.0
  O  O20  1  0.862  0.695  0.679  1.0
  O  O21  1  0.305  0.138  0.321  1.0
  O  O22  1  0.388  0.547  0.825  1.0
[/CIF]
.