The crystal structure described by BaU(SeO4)2 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. U(1) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one O(1) and one O(3) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(5), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to one Ba(1), one U(1), and one Se(2) atom. In the second O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Ba(1) and one U(1) atom. In the third O site, O(7) is bonded in a distorted trigonal planar geometry to one Ba(1), one U(1), and one Se(2) atom. In the fourth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ba(1), one U(1), and one Se(2) atom. In the fifth O site, O(1) is bonded in a water-like geometry to one U(1) and one Se(1) atom. In the sixth O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Ba(1) and one O(2) atom. In the seventh O site, O(3) is bonded in a 3-coordinate geometry to one Ba(1), one U(1), and one Se(1) atom. In the eighth O site, O(4) is bonded in a 2-coordinate geometry to one Ba(1) and one U(1) atom. is represented by the CIF file [CIF]
data_BaU(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.510
_cell_length_b   7.877
_cell_length_c   13.629
_cell_angle_alpha   68.068
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   946.988
_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
  Ba  Ba0  1  0.602  0.335  0.693  1.0
  Ba  Ba1  1  0.102  0.665  0.807  1.0
  Ba  Ba2  1  0.398  0.665  0.307  1.0
  Ba  Ba3  1  0.898  0.335  0.193  1.0
  U  U4  1  0.596  0.765  0.788  1.0
  U  U5  1  0.096  0.235  0.712  1.0
  U  U6  1  0.404  0.235  0.212  1.0
  U  U7  1  0.904  0.765  0.288  1.0
  Se  Se8  1  0.551  0.723  0.037  1.0
  Se  Se9  1  0.051  0.277  0.463  1.0
  Se  Se10  1  0.449  0.277  0.963  1.0
  Se  Se11  1  0.949  0.723  0.537  1.0
  Se  Se12  1  0.338  0.021  0.617  1.0
  Se  Se13  1  0.838  0.979  0.883  1.0
  Se  Se14  1  0.662  0.979  0.383  1.0
  Se  Se15  1  0.162  0.021  0.117  1.0
  O  O16  1  0.450  0.748  0.925  1.0
  O  O17  1  0.950  0.252  0.575  1.0
  O  O18  1  0.550  0.252  0.075  1.0
  O  O19  1  0.050  0.748  0.425  1.0
  O  O20  1  0.043  0.552  0.017  1.0
  O  O21  1  0.543  0.448  0.483  1.0
  O  O22  1  0.957  0.448  0.983  1.0
  O  O23  1  0.457  0.552  0.517  1.0
  O  O24  1  0.465  0.536  0.137  1.0
  O  O25  1  0.965  0.464  0.363  1.0
  O  O26  1  0.535  0.464  0.863  1.0
  O  O27  1  0.035  0.536  0.637  1.0
  O  O28  1  0.604  0.006  0.682  1.0
  O  O29  1  0.104  0.994  0.818  1.0
  O  O30  1  0.396  0.994  0.318  1.0
  O  O31  1  0.896  0.006  0.182  1.0
  O  O32  1  0.157  0.004  0.613  1.0
  O  O33  1  0.657  0.996  0.887  1.0
  O  O34  1  0.843  0.996  0.387  1.0
  O  O35  1  0.343  0.004  0.113  1.0
  O  O36  1  0.680  0.666  0.694  1.0
  O  O37  1  0.180  0.334  0.806  1.0
  O  O38  1  0.320  0.334  0.306  1.0
  O  O39  1  0.820  0.666  0.194  1.0
  O  O40  1  0.371  0.806  0.718  1.0
  O  O41  1  0.871  0.194  0.782  1.0
  O  O42  1  0.629  0.194  0.282  1.0
  O  O43  1  0.129  0.806  0.218  1.0
  O  O44  1  0.838  0.815  0.825  1.0
  O  O45  1  0.338  0.185  0.675  1.0
  O  O46  1  0.162  0.185  0.175  1.0
  O  O47  1  0.662  0.815  0.325  1.0
[/CIF]
.
The crystal structure described by BaU(SeO4)2 crystallizes in the monoclinic P2_1/c space group. Ba(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and two equivalent O(2) atoms. U(1) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one O(1) and one O(3) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(5), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to one Ba(1), one U(1), and one Se(2) atom. In the second O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Ba(1) and one U(1) atom. In the third O site, O(7) is bonded in a distorted trigonal planar geometry to one Ba(1), one U(1), and one Se(2) atom. In the fourth O site, O(8) is bonded in a distorted trigonal planar geometry to one Ba(1), one U(1), and one Se(2) atom. In the fifth O site, O(1) is bonded in a water-like geometry to one U(1) and one Se(1) atom. In the sixth O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Ba(1) and one O(2) atom. In the seventh O site, O(3) is bonded in a 3-coordinate geometry to one Ba(1), one U(1), and one Se(1) atom. In the eighth O site, O(4) is bonded in a 2-coordinate geometry to one Ba(1) and one U(1) atom. is represented by the CIF file [CIF]
data_BaU(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.510
_cell_length_b   7.877
_cell_length_c   13.629
_cell_angle_alpha   68.068
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   946.988
_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
  Ba  Ba0  1  0.602  0.335  0.693  1.0
  Ba  Ba1  1  0.102  0.665  0.807  1.0
  Ba  Ba2  1  0.398  0.665  0.307  1.0
  Ba  Ba3  1  0.898  0.335  0.193  1.0
  U  U4  1  0.596  0.765  0.788  1.0
  U  U5  1  0.096  0.235  0.712  1.0
  U  U6  1  0.404  0.235  0.212  1.0
  U  U7  1  0.904  0.765  0.288  1.0
  Se  Se8  1  0.551  0.723  0.037  1.0
  Se  Se9  1  0.051  0.277  0.463  1.0
  Se  Se10  1  0.449  0.277  0.963  1.0
  Se  Se11  1  0.949  0.723  0.537  1.0
  Se  Se12  1  0.338  0.021  0.617  1.0
  Se  Se13  1  0.838  0.979  0.883  1.0
  Se  Se14  1  0.662  0.979  0.383  1.0
  Se  Se15  1  0.162  0.021  0.117  1.0
  O  O16  1  0.450  0.748  0.925  1.0
  O  O17  1  0.950  0.252  0.575  1.0
  O  O18  1  0.550  0.252  0.075  1.0
  O  O19  1  0.050  0.748  0.425  1.0
  O  O20  1  0.043  0.552  0.017  1.0
  O  O21  1  0.543  0.448  0.483  1.0
  O  O22  1  0.957  0.448  0.983  1.0
  O  O23  1  0.457  0.552  0.517  1.0
  O  O24  1  0.465  0.536  0.137  1.0
  O  O25  1  0.965  0.464  0.363  1.0
  O  O26  1  0.535  0.464  0.863  1.0
  O  O27  1  0.035  0.536  0.637  1.0
  O  O28  1  0.604  0.006  0.682  1.0
  O  O29  1  0.104  0.994  0.818  1.0
  O  O30  1  0.396  0.994  0.318  1.0
  O  O31  1  0.896  0.006  0.182  1.0
  O  O32  1  0.157  0.004  0.613  1.0
  O  O33  1  0.657  0.996  0.887  1.0
  O  O34  1  0.843  0.996  0.387  1.0
  O  O35  1  0.343  0.004  0.113  1.0
  O  O36  1  0.680  0.666  0.694  1.0
  O  O37  1  0.180  0.334  0.806  1.0
  O  O38  1  0.320  0.334  0.306  1.0
  O  O39  1  0.820  0.666  0.194  1.0
  O  O40  1  0.371  0.806  0.718  1.0
  O  O41  1  0.871  0.194  0.782  1.0
  O  O42  1  0.629  0.194  0.282  1.0
  O  O43  1  0.129  0.806  0.218  1.0
  O  O44  1  0.838  0.815  0.825  1.0
  O  O45  1  0.338  0.185  0.675  1.0
  O  O46  1  0.162  0.185  0.175  1.0
  O  O47  1  0.662  0.815  0.325  1.0
[/CIF]
.