The crystal structure described by KU(SeO4)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), one O(8), and two equivalent O(7) atoms. U(1) is bonded in a distorted pentagonal bipyramidal 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 Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(6) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(5) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one K(1), one U(1), and one Se(2) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one K(1), one U(1), and one Se(1) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the fourth O site, O(8) is bonded in a distorted single-bond geometry to one K(1) and one U(1) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to one K(1) and one Se(1) atom. In the sixth O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one U(1), and one Se(1) atom. In the seventh O site, O(3) is bonded in a bent 120 degrees geometry to one U(1) and one Se(2) atom. In the eighth O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one U(1), and one Se(2) atom. is represented by the CIF file [CIF]
data_KU(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.240
_cell_length_b   9.050
_cell_length_c   12.856
_cell_angle_alpha   49.277
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   902.983
_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
  K  K0  1  0.551  0.282  0.441  1.0
  K  K1  1  0.949  0.282  0.941  1.0
  K  K2  1  0.449  0.718  0.559  1.0
  K  K3  1  0.051  0.718  0.059  1.0
  U  U4  1  0.797  0.810  0.310  1.0
  U  U5  1  0.703  0.810  0.810  1.0
  U  U6  1  0.203  0.190  0.690  1.0
  U  U7  1  0.297  0.190  0.190  1.0
  Se  Se8  1  0.959  0.205  0.303  1.0
  Se  Se9  1  0.541  0.205  0.803  1.0
  Se  Se10  1  0.041  0.795  0.697  1.0
  Se  Se11  1  0.459  0.795  0.197  1.0
  Se  Se12  1  0.130  0.719  0.400  1.0
  Se  Se13  1  0.370  0.719  0.900  1.0
  Se  Se14  1  0.870  0.281  0.600  1.0
  Se  Se15  1  0.630  0.281  0.100  1.0
  O  O16  1  0.860  0.385  0.254  1.0
  O  O17  1  0.640  0.385  0.754  1.0
  O  O18  1  0.140  0.615  0.746  1.0
  O  O19  1  0.360  0.615  0.246  1.0
  O  O20  1  0.906  0.109  0.231  1.0
  O  O21  1  0.594  0.109  0.731  1.0
  O  O22  1  0.094  0.891  0.769  1.0
  O  O23  1  0.406  0.891  0.269  1.0
  O  O24  1  0.973  0.705  0.458  1.0
  O  O25  1  0.527  0.705  0.958  1.0
  O  O26  1  0.027  0.295  0.542  1.0
  O  O27  1  0.473  0.295  0.042  1.0
  O  O28  1  0.191  0.911  0.385  1.0
  O  O29  1  0.309  0.911  0.885  1.0
  O  O30  1  0.809  0.089  0.615  1.0
  O  O31  1  0.691  0.089  0.115  1.0
  O  O32  1  0.788  0.472  0.455  1.0
  O  O33  1  0.712  0.472  0.955  1.0
  O  O34  1  0.212  0.528  0.545  1.0
  O  O35  1  0.288  0.528  0.045  1.0
  O  O36  1  0.608  0.690  0.270  1.0
  O  O37  1  0.892  0.690  0.770  1.0
  O  O38  1  0.392  0.310  0.730  1.0
  O  O39  1  0.108  0.310  0.230  1.0
  O  O40  1  0.906  0.827  0.189  1.0
  O  O41  1  0.594  0.827  0.689  1.0
  O  O42  1  0.094  0.173  0.811  1.0
  O  O43  1  0.406  0.173  0.311  1.0
  O  O44  1  0.695  0.817  0.422  1.0
  O  O45  1  0.805  0.817  0.922  1.0
  O  O46  1  0.305  0.183  0.578  1.0
  O  O47  1  0.195  0.183  0.078  1.0
[/CIF]
.
The crystal structure described by KU(SeO4)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(4), one O(5), one O(6), one O(8), and two equivalent O(7) atoms. U(1) is bonded in a distorted pentagonal bipyramidal 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 Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(6) atom. In the second Se site, Se(2) is bonded in a trigonal non-coplanar geometry to one O(3), one O(4), and one O(5) atom. There are eight inequivalent O sites. In the first O site, O(5) is bonded in a 3-coordinate geometry to one K(1), one U(1), and one Se(2) atom. In the second O site, O(6) is bonded in a distorted trigonal planar geometry to one K(1), one U(1), and one Se(1) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(1) and one U(1) atom. In the fourth O site, O(8) is bonded in a distorted single-bond geometry to one K(1) and one U(1) atom. In the fifth O site, O(1) is bonded in a distorted single-bond geometry to one K(1) and one Se(1) atom. In the sixth O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one U(1), and one Se(1) atom. In the seventh O site, O(3) is bonded in a bent 120 degrees geometry to one U(1) and one Se(2) atom. In the eighth O site, O(4) is bonded in a 2-coordinate geometry to one K(1), one U(1), and one Se(2) atom. is represented by the CIF file [CIF]
data_KU(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.240
_cell_length_b   9.050
_cell_length_c   12.856
_cell_angle_alpha   49.277
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   902.983
_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
  K  K0  1  0.551  0.282  0.441  1.0
  K  K1  1  0.949  0.282  0.941  1.0
  K  K2  1  0.449  0.718  0.559  1.0
  K  K3  1  0.051  0.718  0.059  1.0
  U  U4  1  0.797  0.810  0.310  1.0
  U  U5  1  0.703  0.810  0.810  1.0
  U  U6  1  0.203  0.190  0.690  1.0
  U  U7  1  0.297  0.190  0.190  1.0
  Se  Se8  1  0.959  0.205  0.303  1.0
  Se  Se9  1  0.541  0.205  0.803  1.0
  Se  Se10  1  0.041  0.795  0.697  1.0
  Se  Se11  1  0.459  0.795  0.197  1.0
  Se  Se12  1  0.130  0.719  0.400  1.0
  Se  Se13  1  0.370  0.719  0.900  1.0
  Se  Se14  1  0.870  0.281  0.600  1.0
  Se  Se15  1  0.630  0.281  0.100  1.0
  O  O16  1  0.860  0.385  0.254  1.0
  O  O17  1  0.640  0.385  0.754  1.0
  O  O18  1  0.140  0.615  0.746  1.0
  O  O19  1  0.360  0.615  0.246  1.0
  O  O20  1  0.906  0.109  0.231  1.0
  O  O21  1  0.594  0.109  0.731  1.0
  O  O22  1  0.094  0.891  0.769  1.0
  O  O23  1  0.406  0.891  0.269  1.0
  O  O24  1  0.973  0.705  0.458  1.0
  O  O25  1  0.527  0.705  0.958  1.0
  O  O26  1  0.027  0.295  0.542  1.0
  O  O27  1  0.473  0.295  0.042  1.0
  O  O28  1  0.191  0.911  0.385  1.0
  O  O29  1  0.309  0.911  0.885  1.0
  O  O30  1  0.809  0.089  0.615  1.0
  O  O31  1  0.691  0.089  0.115  1.0
  O  O32  1  0.788  0.472  0.455  1.0
  O  O33  1  0.712  0.472  0.955  1.0
  O  O34  1  0.212  0.528  0.545  1.0
  O  O35  1  0.288  0.528  0.045  1.0
  O  O36  1  0.608  0.690  0.270  1.0
  O  O37  1  0.892  0.690  0.770  1.0
  O  O38  1  0.392  0.310  0.730  1.0
  O  O39  1  0.108  0.310  0.230  1.0
  O  O40  1  0.906  0.827  0.189  1.0
  O  O41  1  0.594  0.827  0.689  1.0
  O  O42  1  0.094  0.173  0.811  1.0
  O  O43  1  0.406  0.173  0.311  1.0
  O  O44  1  0.695  0.817  0.422  1.0
  O  O45  1  0.805  0.817  0.922  1.0
  O  O46  1  0.305  0.183  0.578  1.0
  O  O47  1  0.195  0.183  0.078  1.0
[/CIF]
.