The material structure described by Re8Pb8O27 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(1), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form ReO6 octahedra that share corners with two equivalent Re(2)O6 octahedra, corners with four equivalent Re(1)O6 octahedra, and edges with four equivalent Pb(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 39-40°. In the second Re site, Re(2) is bonded to one O(2), one O(5), two equivalent O(4), and two equivalent O(7) atoms to form ReO6 octahedra that share corners with two equivalent Re(1)O6 octahedra, corners with four equivalent Re(2)O6 octahedra, and edges with two equivalent Pb(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 39-43°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(2), one O(6), one O(8), one O(9), two equivalent O(3), and two equivalent O(7) atoms to form distorted PbO8 hexagonal bipyramids that share edges with four equivalent Pb(1)O8 hexagonal bipyramids, edges with two equivalent Re(2)O6 octahedra, and edges with four equivalent Re(1)O6 octahedra. In the second Pb site, Pb(2) is bonded in a 7-coordinate geometry to one O(1), one O(5), one O(9), two equivalent O(4), and two equivalent O(7) atoms. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Re(1), one Re(2), one Pb(1), and one Pb(2) atom. In the second O site, O(8) is bonded to four equivalent Pb(1) atoms to form corner-sharing OPb4 tetrahedra. In the third O site, O(9) is bonded to two equivalent Pb(1) and two equivalent Pb(2) atoms to form corner-sharing OPb4 tetrahedra. In the fourth O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(1) and two equivalent Pb(2) atoms. In the fifth O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(2) and two equivalent Pb(1) atoms. In the sixth O site, O(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(1) and two equivalent Pb(1) atoms. In the seventh O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Re(2) and two equivalent Pb(2) atoms. In the eighth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Re(2) and two equivalent Pb(2) atoms. In the ninth O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(1) and two equivalent Pb(1) atoms. is represented by the CIF card [CIF]
data_Re8Pb8O27
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.481
_cell_length_b   7.481
_cell_length_c   10.653
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   596.222
_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
  Re  Re0  1  0.749  0.500  0.875  1.0
  Re  Re1  1  0.249  0.000  0.373  1.0
  Re  Re2  1  0.751  0.000  0.373  1.0
  Re  Re3  1  0.251  0.500  0.875  1.0
  Re  Re4  1  0.500  0.251  0.125  1.0
  Re  Re5  1  0.000  0.751  0.627  1.0
  Re  Re6  1  0.500  0.749  0.125  1.0
  Re  Re7  1  0.000  0.249  0.627  1.0
  Pb  Pb8  1  0.253  0.000  0.876  1.0
  Pb  Pb9  1  0.749  0.500  0.384  1.0
  Pb  Pb10  1  0.251  0.500  0.384  1.0
  Pb  Pb11  1  0.747  0.000  0.876  1.0
  Pb  Pb12  1  0.000  0.747  0.124  1.0
  Pb  Pb13  1  0.500  0.251  0.616  1.0
  Pb  Pb14  1  0.500  0.749  0.616  1.0
  Pb  Pb15  1  0.000  0.253  0.124  1.0
  O  O16  1  0.500  0.500  0.812  1.0
  O  O17  1  0.000  0.000  0.312  1.0
  O  O18  1  0.500  0.500  0.188  1.0
  O  O19  1  0.000  0.000  0.688  1.0
  O  O20  1  0.689  0.311  0.000  1.0
  O  O21  1  0.191  0.809  0.500  1.0
  O  O22  1  0.311  0.689  0.000  1.0
  O  O23  1  0.809  0.191  0.500  1.0
  O  O24  1  0.311  0.311  0.000  1.0
  O  O25  1  0.809  0.809  0.500  1.0
  O  O26  1  0.689  0.689  0.000  1.0
  O  O27  1  0.191  0.191  0.500  1.0
  O  O28  1  0.500  0.000  0.443  1.0
  O  O29  1  0.000  0.500  0.938  1.0
  O  O30  1  0.500  0.000  0.062  1.0
  O  O31  1  0.000  0.500  0.557  1.0
  O  O32  1  0.312  0.190  0.251  1.0
  O  O33  1  0.810  0.688  0.749  1.0
  O  O34  1  0.688  0.810  0.251  1.0
  O  O35  1  0.190  0.312  0.749  1.0
  O  O36  1  0.688  0.190  0.251  1.0
  O  O37  1  0.190  0.688  0.749  1.0
  O  O38  1  0.312  0.810  0.251  1.0
  O  O39  1  0.810  0.312  0.749  1.0
  O  O40  1  0.000  0.000  0.000  1.0
  O  O41  1  0.500  0.000  0.719  1.0
  O  O42  1  0.000  0.500  0.281  1.0
[/CIF]
.
The material structure described by Re8Pb8O27 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(1), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form ReO6 octahedra that share corners with two equivalent Re(2)O6 octahedra, corners with four equivalent Re(1)O6 octahedra, and edges with four equivalent Pb(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 39-40°. In the second Re site, Re(2) is bonded to one O(2), one O(5), two equivalent O(4), and two equivalent O(7) atoms to form ReO6 octahedra that share corners with two equivalent Re(1)O6 octahedra, corners with four equivalent Re(2)O6 octahedra, and edges with two equivalent Pb(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 39-43°. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(2), one O(6), one O(8), one O(9), two equivalent O(3), and two equivalent O(7) atoms to form distorted PbO8 hexagonal bipyramids that share edges with four equivalent Pb(1)O8 hexagonal bipyramids, edges with two equivalent Re(2)O6 octahedra, and edges with four equivalent Re(1)O6 octahedra. In the second Pb site, Pb(2) is bonded in a 7-coordinate geometry to one O(1), one O(5), one O(9), two equivalent O(4), and two equivalent O(7) atoms. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Re(1), one Re(2), one Pb(1), and one Pb(2) atom. In the second O site, O(8) is bonded to four equivalent Pb(1) atoms to form corner-sharing OPb4 tetrahedra. In the third O site, O(9) is bonded to two equivalent Pb(1) and two equivalent Pb(2) atoms to form corner-sharing OPb4 tetrahedra. In the fourth O site, O(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(1) and two equivalent Pb(2) atoms. In the fifth O site, O(2) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(2) and two equivalent Pb(1) atoms. In the sixth O site, O(3) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(1) and two equivalent Pb(1) atoms. In the seventh O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Re(2) and two equivalent Pb(2) atoms. In the eighth O site, O(5) is bonded in a 4-coordinate geometry to two equivalent Re(2) and two equivalent Pb(2) atoms. In the ninth O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Re(1) and two equivalent Pb(1) atoms. is represented by the CIF card [CIF]
data_Re8Pb8O27
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.481
_cell_length_b   7.481
_cell_length_c   10.653
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   596.222
_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
  Re  Re0  1  0.749  0.500  0.875  1.0
  Re  Re1  1  0.249  0.000  0.373  1.0
  Re  Re2  1  0.751  0.000  0.373  1.0
  Re  Re3  1  0.251  0.500  0.875  1.0
  Re  Re4  1  0.500  0.251  0.125  1.0
  Re  Re5  1  0.000  0.751  0.627  1.0
  Re  Re6  1  0.500  0.749  0.125  1.0
  Re  Re7  1  0.000  0.249  0.627  1.0
  Pb  Pb8  1  0.253  0.000  0.876  1.0
  Pb  Pb9  1  0.749  0.500  0.384  1.0
  Pb  Pb10  1  0.251  0.500  0.384  1.0
  Pb  Pb11  1  0.747  0.000  0.876  1.0
  Pb  Pb12  1  0.000  0.747  0.124  1.0
  Pb  Pb13  1  0.500  0.251  0.616  1.0
  Pb  Pb14  1  0.500  0.749  0.616  1.0
  Pb  Pb15  1  0.000  0.253  0.124  1.0
  O  O16  1  0.500  0.500  0.812  1.0
  O  O17  1  0.000  0.000  0.312  1.0
  O  O18  1  0.500  0.500  0.188  1.0
  O  O19  1  0.000  0.000  0.688  1.0
  O  O20  1  0.689  0.311  0.000  1.0
  O  O21  1  0.191  0.809  0.500  1.0
  O  O22  1  0.311  0.689  0.000  1.0
  O  O23  1  0.809  0.191  0.500  1.0
  O  O24  1  0.311  0.311  0.000  1.0
  O  O25  1  0.809  0.809  0.500  1.0
  O  O26  1  0.689  0.689  0.000  1.0
  O  O27  1  0.191  0.191  0.500  1.0
  O  O28  1  0.500  0.000  0.443  1.0
  O  O29  1  0.000  0.500  0.938  1.0
  O  O30  1  0.500  0.000  0.062  1.0
  O  O31  1  0.000  0.500  0.557  1.0
  O  O32  1  0.312  0.190  0.251  1.0
  O  O33  1  0.810  0.688  0.749  1.0
  O  O34  1  0.688  0.810  0.251  1.0
  O  O35  1  0.190  0.312  0.749  1.0
  O  O36  1  0.688  0.190  0.251  1.0
  O  O37  1  0.190  0.688  0.749  1.0
  O  O38  1  0.312  0.810  0.251  1.0
  O  O39  1  0.810  0.312  0.749  1.0
  O  O40  1  0.000  0.000  0.000  1.0
  O  O41  1  0.500  0.000  0.719  1.0
  O  O42  1  0.000  0.500  0.281  1.0
[/CIF]
.