The crystal structure described by UPb(SeO4)2 crystallizes in the orthorhombic Pmc2_1 space group. U(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(9) atom to form distorted UO7 pentagonal bipyramids that share corners with two equivalent Pb(1)O5 square pyramids. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(8), two equivalent O(5), and two equivalent O(9) atoms to form distorted PbO5 square pyramids that share corners with four equivalent U(1)O7 pentagonal bipyramids. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(4), and two equivalent O(6) atoms. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted trigonal non-coplanar geometry to one O(7) and two equivalent O(1) atoms. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(3), one O(6), and one O(9) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(8) and two equivalent O(2) atoms. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to one Pb(2) and one Se(1) atom. In the second O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Pb(1) and one Se(3) atom. In the third O site, O(9) is bonded in a distorted trigonal planar geometry to one U(1), one Pb(1), and one Se(2) atom. In the fourth O site, O(1) is bonded in a bent 150 degrees geometry to one U(1) and one Se(1) atom. In the fifth O site, O(2) is bonded in a bent 150 degrees geometry to one U(1) and one Se(3) atom. In the sixth O site, O(3) is bonded in a bent 150 degrees geometry to one U(1) and one Se(2) atom. In the seventh O site, O(4) is bonded in a single-bond geometry to one U(1) and one Pb(2) atom. In the eighth O site, O(5) is bonded in a distorted single-bond geometry to one U(1) and one Pb(1) atom. In the ninth O site, O(6) is bonded in a distorted trigonal planar geometry to one U(1), one Pb(2), and one Se(2) atom. is represented by the CIF card [CIF]
data_UPb(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.890
_cell_length_b   11.475
_cell_length_c   12.193
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   824.064
_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  0.225  0.251  1.0
  U  U1  1  0.000  0.225  0.749  1.0
  U  U2  1  1.000  0.725  0.749  1.0
  U  U3  1  1.000  0.725  0.251  1.0
  Pb  Pb4  1  0.051  0.979  0.000  1.0
  Pb  Pb5  1  0.486  0.776  0.500  1.0
  Pb  Pb6  1  0.514  0.276  0.500  1.0
  Pb  Pb7  1  0.949  0.479  0.000  1.0
  Se  Se8  1  0.140  0.031  0.500  1.0
  Se  Se9  1  0.860  0.531  0.500  1.0
  Se  Se10  1  0.625  0.950  0.234  1.0
  Se  Se11  1  0.375  0.450  0.234  1.0
  Se  Se12  1  0.625  0.950  0.766  1.0
  Se  Se13  1  0.402  0.715  0.000  1.0
  Se  Se14  1  0.598  0.215  0.000  1.0
  Se  Se15  1  0.375  0.450  0.766  1.0
  O  O16  1  0.162  0.131  0.607  1.0
  O  O17  1  0.751  0.277  0.891  1.0
  O  O18  1  0.162  0.131  0.393  1.0
  O  O19  1  0.255  0.578  0.720  1.0
  O  O20  1  0.751  0.277  0.109  1.0
  O  O21  1  0.173  0.815  0.657  1.0
  O  O22  1  0.249  0.777  0.109  1.0
  O  O23  1  0.255  0.578  0.280  1.0
  O  O24  1  0.745  0.078  0.720  1.0
  O  O25  1  0.170  0.135  0.844  1.0
  O  O26  1  0.838  0.631  0.607  1.0
  O  O27  1  0.830  0.635  0.156  1.0
  O  O28  1  0.249  0.777  0.891  1.0
  O  O29  1  0.745  0.078  0.280  1.0
  O  O30  1  0.690  0.847  0.665  1.0
  O  O31  1  0.173  0.815  0.343  1.0
  O  O32  1  0.590  0.479  0.500  1.0
  O  O33  1  0.838  0.631  0.393  1.0
  O  O34  1  0.678  0.073  0.000  1.0
  O  O35  1  0.836  0.891  0.148  1.0
  O  O36  1  0.322  0.573  0.000  1.0
  O  O37  1  0.827  0.315  0.657  1.0
  O  O38  1  0.310  0.347  0.335  1.0
  O  O39  1  0.836  0.891  0.852  1.0
  O  O40  1  0.164  0.391  0.148  1.0
  O  O41  1  0.164  0.391  0.852  1.0
  O  O42  1  0.827  0.315  0.343  1.0
  O  O43  1  0.690  0.847  0.335  1.0
  O  O44  1  0.830  0.635  0.844  1.0
  O  O45  1  0.170  0.135  0.156  1.0
  O  O46  1  0.310  0.347  0.665  1.0
  O  O47  1  0.410  0.979  0.500  1.0
[/CIF]
.
The crystal structure described by UPb(SeO4)2 crystallizes in the orthorhombic Pmc2_1 space group. U(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(9) atom to form distorted UO7 pentagonal bipyramids that share corners with two equivalent Pb(1)O5 square pyramids. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(8), two equivalent O(5), and two equivalent O(9) atoms to form distorted PbO5 square pyramids that share corners with four equivalent U(1)O7 pentagonal bipyramids. In the second Pb site, Pb(2) is bonded in a 5-coordinate geometry to one O(7), two equivalent O(4), and two equivalent O(6) atoms. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted trigonal non-coplanar geometry to one O(7) and two equivalent O(1) atoms. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(3), one O(6), and one O(9) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one O(8) and two equivalent O(2) atoms. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to one Pb(2) and one Se(1) atom. In the second O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Pb(1) and one Se(3) atom. In the third O site, O(9) is bonded in a distorted trigonal planar geometry to one U(1), one Pb(1), and one Se(2) atom. In the fourth O site, O(1) is bonded in a bent 150 degrees geometry to one U(1) and one Se(1) atom. In the fifth O site, O(2) is bonded in a bent 150 degrees geometry to one U(1) and one Se(3) atom. In the sixth O site, O(3) is bonded in a bent 150 degrees geometry to one U(1) and one Se(2) atom. In the seventh O site, O(4) is bonded in a single-bond geometry to one U(1) and one Pb(2) atom. In the eighth O site, O(5) is bonded in a distorted single-bond geometry to one U(1) and one Pb(1) atom. In the ninth O site, O(6) is bonded in a distorted trigonal planar geometry to one U(1), one Pb(2), and one Se(2) atom. is represented by the CIF card [CIF]
data_UPb(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.890
_cell_length_b   11.475
_cell_length_c   12.193
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   824.064
_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  0.225  0.251  1.0
  U  U1  1  0.000  0.225  0.749  1.0
  U  U2  1  1.000  0.725  0.749  1.0
  U  U3  1  1.000  0.725  0.251  1.0
  Pb  Pb4  1  0.051  0.979  0.000  1.0
  Pb  Pb5  1  0.486  0.776  0.500  1.0
  Pb  Pb6  1  0.514  0.276  0.500  1.0
  Pb  Pb7  1  0.949  0.479  0.000  1.0
  Se  Se8  1  0.140  0.031  0.500  1.0
  Se  Se9  1  0.860  0.531  0.500  1.0
  Se  Se10  1  0.625  0.950  0.234  1.0
  Se  Se11  1  0.375  0.450  0.234  1.0
  Se  Se12  1  0.625  0.950  0.766  1.0
  Se  Se13  1  0.402  0.715  0.000  1.0
  Se  Se14  1  0.598  0.215  0.000  1.0
  Se  Se15  1  0.375  0.450  0.766  1.0
  O  O16  1  0.162  0.131  0.607  1.0
  O  O17  1  0.751  0.277  0.891  1.0
  O  O18  1  0.162  0.131  0.393  1.0
  O  O19  1  0.255  0.578  0.720  1.0
  O  O20  1  0.751  0.277  0.109  1.0
  O  O21  1  0.173  0.815  0.657  1.0
  O  O22  1  0.249  0.777  0.109  1.0
  O  O23  1  0.255  0.578  0.280  1.0
  O  O24  1  0.745  0.078  0.720  1.0
  O  O25  1  0.170  0.135  0.844  1.0
  O  O26  1  0.838  0.631  0.607  1.0
  O  O27  1  0.830  0.635  0.156  1.0
  O  O28  1  0.249  0.777  0.891  1.0
  O  O29  1  0.745  0.078  0.280  1.0
  O  O30  1  0.690  0.847  0.665  1.0
  O  O31  1  0.173  0.815  0.343  1.0
  O  O32  1  0.590  0.479  0.500  1.0
  O  O33  1  0.838  0.631  0.393  1.0
  O  O34  1  0.678  0.073  0.000  1.0
  O  O35  1  0.836  0.891  0.148  1.0
  O  O36  1  0.322  0.573  0.000  1.0
  O  O37  1  0.827  0.315  0.657  1.0
  O  O38  1  0.310  0.347  0.335  1.0
  O  O39  1  0.836  0.891  0.852  1.0
  O  O40  1  0.164  0.391  0.148  1.0
  O  O41  1  0.164  0.391  0.852  1.0
  O  O42  1  0.827  0.315  0.343  1.0
  O  O43  1  0.690  0.847  0.335  1.0
  O  O44  1  0.830  0.635  0.844  1.0
  O  O45  1  0.170  0.135  0.156  1.0
  O  O46  1  0.310  0.347  0.665  1.0
  O  O47  1  0.410  0.979  0.500  1.0
[/CIF]
.