The crystal structure described by PbUO2(V2O7) crystallizes in the monoclinic P2_1/c space group. U(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(5), and one O(9) atom to form corner-sharing VO4 tetrahedra. In the second V site, V(2) is bonded to one O(1), one O(4), one O(7), and one O(8) atom to form corner-sharing VO4 tetrahedra. Pb(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(8), and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(9) is bonded in a single-bond geometry to one V(1) and one Pb(1) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one U(1) and one V(1) atom. In the fourth O site, O(3) is bonded in a single-bond geometry to one U(1) and one Pb(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one U(1), one V(2), and one Pb(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one U(1), one V(1), and one Pb(1) atom. In the seventh O site, O(6) is bonded in a single-bond geometry to one U(1) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one U(1) and one V(2) atom. In the ninth O site, O(8) is bonded in a distorted single-bond geometry to one U(1), one V(2), and one Pb(1) atom. is represented by the CIF file [CIF]
data_UV2PbO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.906
_cell_length_b   7.022
_cell_length_c   13.660
_cell_angle_alpha   61.745
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   836.974
_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
  U  U0  1  0.000  0.275  0.271  1.0
  U  U1  1  1.000  0.725  0.729  1.0
  U  U2  1  0.500  0.275  0.771  1.0
  U  U3  1  0.500  0.725  0.229  1.0
  V  V4  1  0.727  0.683  0.538  1.0
  V  V5  1  0.773  0.683  0.038  1.0
  V  V6  1  0.042  0.235  0.670  1.0
  V  V7  1  0.542  0.765  0.830  1.0
  V  V8  1  0.227  0.317  0.962  1.0
  V  V9  1  0.458  0.235  0.170  1.0
  V  V10  1  0.958  0.765  0.330  1.0
  V  V11  1  0.273  0.317  0.462  1.0
  Pb  Pb12  1  0.693  0.153  0.536  1.0
  Pb  Pb13  1  0.807  0.153  0.036  1.0
  Pb  Pb14  1  0.307  0.847  0.464  1.0
  Pb  Pb15  1  0.193  0.847  0.964  1.0
  O  O16  1  0.649  0.640  0.951  1.0
  O  O17  1  0.851  0.640  0.451  1.0
  O  O18  1  0.343  0.566  0.371  1.0
  O  O19  1  0.377  0.822  0.115  1.0
  O  O20  1  0.387  0.000  0.272  1.0
  O  O21  1  0.613  1.000  0.728  1.0
  O  O22  1  0.188  0.210  0.387  1.0
  O  O23  1  0.620  0.615  0.343  1.0
  O  O24  1  0.002  0.587  0.281  1.0
  O  O25  1  0.149  0.360  0.549  1.0
  O  O26  1  0.812  0.790  0.613  1.0
  O  O27  1  0.091  0.882  0.362  1.0
  O  O28  1  0.657  0.434  0.629  1.0
  O  O29  1  0.380  0.385  0.657  1.0
  O  O30  1  0.409  0.882  0.862  1.0
  O  O31  1  0.113  0.000  0.772  1.0
  O  O32  1  0.895  0.868  0.974  1.0
  O  O33  1  0.688  0.790  0.113  1.0
  O  O34  1  0.623  0.178  0.885  1.0
  O  O35  1  0.880  0.615  0.843  1.0
  O  O36  1  0.351  0.360  0.049  1.0
  O  O37  1  0.123  0.822  0.615  1.0
  O  O38  1  0.395  0.132  0.526  1.0
  O  O39  1  0.843  0.434  0.129  1.0
  O  O40  1  0.909  0.118  0.638  1.0
  O  O41  1  0.591  0.118  0.138  1.0
  O  O42  1  0.605  0.868  0.474  1.0
  O  O43  1  0.887  1.000  0.228  1.0
  O  O44  1  0.998  0.413  0.719  1.0
  O  O45  1  0.312  0.210  0.887  1.0
  O  O46  1  0.877  0.178  0.385  1.0
  O  O47  1  0.120  0.385  0.157  1.0
  O  O48  1  0.502  0.413  0.219  1.0
  O  O49  1  0.157  0.566  0.871  1.0
  O  O50  1  0.498  0.587  0.781  1.0
  O  O51  1  0.105  0.132  0.026  1.0
[/CIF]
.
The crystal structure described by PbUO2(V2O7) crystallizes in the monoclinic P2_1/c space group. U(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(2), one O(5), and one O(9) atom to form corner-sharing VO4 tetrahedra. In the second V site, V(2) is bonded to one O(1), one O(4), one O(7), and one O(8) atom to form corner-sharing VO4 tetrahedra. Pb(1) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(5), one O(8), and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(9) is bonded in a single-bond geometry to one V(1) and one Pb(1) atom. In the second O site, O(1) is bonded in a bent 150 degrees geometry to one V(1) and one V(2) atom. In the third O site, O(2) is bonded in a distorted bent 150 degrees geometry to one U(1) and one V(1) atom. In the fourth O site, O(3) is bonded in a single-bond geometry to one U(1) and one Pb(1) atom. In the fifth O site, O(4) is bonded in a distorted single-bond geometry to one U(1), one V(2), and one Pb(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to one U(1), one V(1), and one Pb(1) atom. In the seventh O site, O(6) is bonded in a single-bond geometry to one U(1) atom. In the eighth O site, O(7) is bonded in a bent 150 degrees geometry to one U(1) and one V(2) atom. In the ninth O site, O(8) is bonded in a distorted single-bond geometry to one U(1), one V(2), and one Pb(1) atom. is represented by the CIF file [CIF]
data_UV2PbO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.906
_cell_length_b   7.022
_cell_length_c   13.660
_cell_angle_alpha   61.745
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   836.974
_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
  U  U0  1  0.000  0.275  0.271  1.0
  U  U1  1  1.000  0.725  0.729  1.0
  U  U2  1  0.500  0.275  0.771  1.0
  U  U3  1  0.500  0.725  0.229  1.0
  V  V4  1  0.727  0.683  0.538  1.0
  V  V5  1  0.773  0.683  0.038  1.0
  V  V6  1  0.042  0.235  0.670  1.0
  V  V7  1  0.542  0.765  0.830  1.0
  V  V8  1  0.227  0.317  0.962  1.0
  V  V9  1  0.458  0.235  0.170  1.0
  V  V10  1  0.958  0.765  0.330  1.0
  V  V11  1  0.273  0.317  0.462  1.0
  Pb  Pb12  1  0.693  0.153  0.536  1.0
  Pb  Pb13  1  0.807  0.153  0.036  1.0
  Pb  Pb14  1  0.307  0.847  0.464  1.0
  Pb  Pb15  1  0.193  0.847  0.964  1.0
  O  O16  1  0.649  0.640  0.951  1.0
  O  O17  1  0.851  0.640  0.451  1.0
  O  O18  1  0.343  0.566  0.371  1.0
  O  O19  1  0.377  0.822  0.115  1.0
  O  O20  1  0.387  0.000  0.272  1.0
  O  O21  1  0.613  1.000  0.728  1.0
  O  O22  1  0.188  0.210  0.387  1.0
  O  O23  1  0.620  0.615  0.343  1.0
  O  O24  1  0.002  0.587  0.281  1.0
  O  O25  1  0.149  0.360  0.549  1.0
  O  O26  1  0.812  0.790  0.613  1.0
  O  O27  1  0.091  0.882  0.362  1.0
  O  O28  1  0.657  0.434  0.629  1.0
  O  O29  1  0.380  0.385  0.657  1.0
  O  O30  1  0.409  0.882  0.862  1.0
  O  O31  1  0.113  0.000  0.772  1.0
  O  O32  1  0.895  0.868  0.974  1.0
  O  O33  1  0.688  0.790  0.113  1.0
  O  O34  1  0.623  0.178  0.885  1.0
  O  O35  1  0.880  0.615  0.843  1.0
  O  O36  1  0.351  0.360  0.049  1.0
  O  O37  1  0.123  0.822  0.615  1.0
  O  O38  1  0.395  0.132  0.526  1.0
  O  O39  1  0.843  0.434  0.129  1.0
  O  O40  1  0.909  0.118  0.638  1.0
  O  O41  1  0.591  0.118  0.138  1.0
  O  O42  1  0.605  0.868  0.474  1.0
  O  O43  1  0.887  1.000  0.228  1.0
  O  O44  1  0.998  0.413  0.719  1.0
  O  O45  1  0.312  0.210  0.887  1.0
  O  O46  1  0.877  0.178  0.385  1.0
  O  O47  1  0.120  0.385  0.157  1.0
  O  O48  1  0.502  0.413  0.219  1.0
  O  O49  1  0.157  0.566  0.871  1.0
  O  O50  1  0.498  0.587  0.781  1.0
  O  O51  1  0.105  0.132  0.026  1.0
[/CIF]
.