The structure described by CsUNbO6 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 10-coordinate geometry to one O(3), one O(6), two equivalent O(1), three equivalent O(2), and three equivalent O(5) atoms. U(1) is bonded to one O(1), one O(2), one O(3), two equivalent O(4), and two equivalent O(6) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, corners with two equivalent Nb(1)O5 trigonal bipyramids,  an edgeedge with one U(1)O7 pentagonal bipyramid, and edges with two equivalent Nb(1)O5 trigonal bipyramids. Nb(1) is bonded to one O(4), one O(5), one O(6), and two equivalent O(3) atoms to form distorted NbO5 trigonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one Nb(1)O5 trigonal bipyramid. There are six inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to one Cs(1), two equivalent U(1), and one Nb(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one U(1) atom. In the third O site, O(2) is bonded in a single-bond geometry to three equivalent Cs(1) and one U(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Cs(1), one U(1), and two equivalent Nb(1) atoms. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent U(1) and one Nb(1) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CsUNbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.814
_cell_length_b   7.737
_cell_length_c   10.774
_cell_angle_alpha   75.965
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   712.816
_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
  Cs  Cs0  1  0.771  0.463  0.859  1.0
  Cs  Cs1  1  0.271  0.537  0.641  1.0
  Cs  Cs2  1  0.229  0.537  0.141  1.0
  Cs  Cs3  1  0.729  0.463  0.359  1.0
  U  U4  1  0.017  0.987  0.322  1.0
  U  U5  1  0.517  0.013  0.178  1.0
  U  U6  1  0.983  0.013  0.678  1.0
  U  U7  1  0.483  0.987  0.822  1.0
  Nb  Nb8  1  0.849  0.888  0.056  1.0
  Nb  Nb9  1  0.349  0.112  0.444  1.0
  Nb  Nb10  1  0.151  0.112  0.944  1.0
  Nb  Nb11  1  0.651  0.888  0.556  1.0
  O  O12  1  0.979  0.227  0.269  1.0
  O  O13  1  0.479  0.773  0.231  1.0
  O  O14  1  0.021  0.773  0.731  1.0
  O  O15  1  0.521  0.227  0.769  1.0
  O  O16  1  0.941  0.252  0.627  1.0
  O  O17  1  0.441  0.748  0.873  1.0
  O  O18  1  0.059  0.748  0.373  1.0
  O  O19  1  0.559  0.252  0.127  1.0
  O  O20  1  0.941  0.033  0.889  1.0
  O  O21  1  0.441  0.967  0.611  1.0
  O  O22  1  0.059  0.967  0.111  1.0
  O  O23  1  0.559  0.033  0.389  1.0
  O  O24  1  0.854  0.966  0.495  1.0
  O  O25  1  0.354  0.034  0.005  1.0
  O  O26  1  0.146  0.034  0.505  1.0
  O  O27  1  0.646  0.966  0.995  1.0
  O  O28  1  0.865  0.654  0.071  1.0
  O  O29  1  0.365  0.346  0.429  1.0
  O  O30  1  0.135  0.346  0.929  1.0
  O  O31  1  0.635  0.654  0.571  1.0
  O  O32  1  0.788  0.928  0.222  1.0
  O  O33  1  0.288  0.072  0.278  1.0
  O  O34  1  0.212  0.072  0.778  1.0
  O  O35  1  0.712  0.928  0.722  1.0
[/CIF]
.
The structure described by CsUNbO6 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 10-coordinate geometry to one O(3), one O(6), two equivalent O(1), three equivalent O(2), and three equivalent O(5) atoms. U(1) is bonded to one O(1), one O(2), one O(3), two equivalent O(4), and two equivalent O(6) atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, corners with two equivalent Nb(1)O5 trigonal bipyramids,  an edgeedge with one U(1)O7 pentagonal bipyramid, and edges with two equivalent Nb(1)O5 trigonal bipyramids. Nb(1) is bonded to one O(4), one O(5), one O(6), and two equivalent O(3) atoms to form distorted NbO5 trigonal bipyramids that share corners with two equivalent U(1)O7 pentagonal bipyramids, edges with two equivalent U(1)O7 pentagonal bipyramids, and  an edgeedge with one Nb(1)O5 trigonal bipyramid. There are six inequivalent O sites. In the first O site, O(6) is bonded in a 3-coordinate geometry to one Cs(1), two equivalent U(1), and one Nb(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one U(1) atom. In the third O site, O(2) is bonded in a single-bond geometry to three equivalent Cs(1) and one U(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Cs(1), one U(1), and two equivalent Nb(1) atoms. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent U(1) and one Nb(1) atom. In the sixth O site, O(5) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CsUNbO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.814
_cell_length_b   7.737
_cell_length_c   10.774
_cell_angle_alpha   75.965
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   712.816
_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
  Cs  Cs0  1  0.771  0.463  0.859  1.0
  Cs  Cs1  1  0.271  0.537  0.641  1.0
  Cs  Cs2  1  0.229  0.537  0.141  1.0
  Cs  Cs3  1  0.729  0.463  0.359  1.0
  U  U4  1  0.017  0.987  0.322  1.0
  U  U5  1  0.517  0.013  0.178  1.0
  U  U6  1  0.983  0.013  0.678  1.0
  U  U7  1  0.483  0.987  0.822  1.0
  Nb  Nb8  1  0.849  0.888  0.056  1.0
  Nb  Nb9  1  0.349  0.112  0.444  1.0
  Nb  Nb10  1  0.151  0.112  0.944  1.0
  Nb  Nb11  1  0.651  0.888  0.556  1.0
  O  O12  1  0.979  0.227  0.269  1.0
  O  O13  1  0.479  0.773  0.231  1.0
  O  O14  1  0.021  0.773  0.731  1.0
  O  O15  1  0.521  0.227  0.769  1.0
  O  O16  1  0.941  0.252  0.627  1.0
  O  O17  1  0.441  0.748  0.873  1.0
  O  O18  1  0.059  0.748  0.373  1.0
  O  O19  1  0.559  0.252  0.127  1.0
  O  O20  1  0.941  0.033  0.889  1.0
  O  O21  1  0.441  0.967  0.611  1.0
  O  O22  1  0.059  0.967  0.111  1.0
  O  O23  1  0.559  0.033  0.389  1.0
  O  O24  1  0.854  0.966  0.495  1.0
  O  O25  1  0.354  0.034  0.005  1.0
  O  O26  1  0.146  0.034  0.505  1.0
  O  O27  1  0.646  0.966  0.995  1.0
  O  O28  1  0.865  0.654  0.071  1.0
  O  O29  1  0.365  0.346  0.429  1.0
  O  O30  1  0.135  0.346  0.929  1.0
  O  O31  1  0.635  0.654  0.571  1.0
  O  O32  1  0.788  0.928  0.222  1.0
  O  O33  1  0.288  0.072  0.278  1.0
  O  O34  1  0.212  0.072  0.778  1.0
  O  O35  1  0.712  0.928  0.722  1.0
[/CIF]
.