The structure described by Rb4UC3O11 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(3), one O(4), one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. U(1) is bonded in a distorted hexagonal bipyramidal geometry to two equivalent O(1), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(4) and two equivalent O(5) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one U(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), one U(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), one U(1), and one C(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), one U(1), and one C(1) atom. is represented by the CIF file [CIF]
data_Rb4UC3O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.354
_cell_length_b   7.354
_cell_length_c   12.817
_cell_angle_alpha   87.937
_cell_angle_beta   87.937
_cell_angle_gamma   80.939
_symmetry_Int_Tables_number   1
_cell_volume   683.756
_cell_formula_units_Z   2
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
  Rb  Rb0  1  0.428  0.783  0.459  1.0
  Rb  Rb1  1  0.572  0.217  0.541  1.0
  Rb  Rb2  1  0.217  0.572  0.041  1.0
  Rb  Rb3  1  0.783  0.428  0.959  1.0
  Rb  Rb4  1  0.344  0.025  0.154  1.0
  Rb  Rb5  1  0.656  0.975  0.846  1.0
  Rb  Rb6  1  0.975  0.656  0.346  1.0
  Rb  Rb7  1  0.025  0.344  0.654  1.0
  U  U8  1  0.811  0.189  0.250  1.0
  U  U9  1  0.189  0.811  0.750  1.0
  C  C10  1  0.839  0.916  0.091  1.0
  C  C11  1  0.161  0.084  0.909  1.0
  C  C12  1  0.084  0.161  0.409  1.0
  C  C13  1  0.916  0.839  0.591  1.0
  C  C14  1  0.507  0.493  0.250  1.0
  C  C15  1  0.493  0.507  0.750  1.0
  O  O16  1  0.660  0.040  0.317  1.0
  O  O17  1  0.340  0.960  0.683  1.0
  O  O18  1  0.960  0.340  0.183  1.0
  O  O19  1  0.040  0.660  0.817  1.0
  O  O20  1  0.911  0.963  0.664  1.0
  O  O21  1  0.089  0.037  0.336  1.0
  O  O22  1  0.037  0.089  0.836  1.0
  O  O23  1  0.963  0.911  0.164  1.0
  O  O24  1  0.783  0.829  0.534  1.0
  O  O25  1  0.217  0.171  0.466  1.0
  O  O26  1  0.171  0.217  0.966  1.0
  O  O27  1  0.829  0.783  0.034  1.0
  O  O28  1  0.374  0.626  0.250  1.0
  O  O29  1  0.626  0.374  0.750  1.0
  O  O30  1  0.543  0.380  0.172  1.0
  O  O31  1  0.457  0.620  0.828  1.0
  O  O32  1  0.620  0.457  0.328  1.0
  O  O33  1  0.380  0.543  0.672  1.0
  O  O34  1  0.725  0.074  0.085  1.0
  O  O35  1  0.275  0.926  0.915  1.0
  O  O36  1  0.926  0.275  0.415  1.0
  O  O37  1  0.074  0.725  0.585  1.0
[/CIF]
.
The structure described by Rb4UC3O11 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(6), two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(3), one O(4), one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. U(1) is bonded in a distorted hexagonal bipyramidal geometry to two equivalent O(1), two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(6) atom. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(4) and two equivalent O(5) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one U(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), one U(1), and one C(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one C(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), one U(1), and one C(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), two equivalent Rb(2), one U(1), and one C(1) atom. is represented by the CIF file [CIF]
data_Rb4UC3O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.354
_cell_length_b   7.354
_cell_length_c   12.817
_cell_angle_alpha   87.937
_cell_angle_beta   87.937
_cell_angle_gamma   80.939
_symmetry_Int_Tables_number   1
_cell_volume   683.756
_cell_formula_units_Z   2
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
  Rb  Rb0  1  0.428  0.783  0.459  1.0
  Rb  Rb1  1  0.572  0.217  0.541  1.0
  Rb  Rb2  1  0.217  0.572  0.041  1.0
  Rb  Rb3  1  0.783  0.428  0.959  1.0
  Rb  Rb4  1  0.344  0.025  0.154  1.0
  Rb  Rb5  1  0.656  0.975  0.846  1.0
  Rb  Rb6  1  0.975  0.656  0.346  1.0
  Rb  Rb7  1  0.025  0.344  0.654  1.0
  U  U8  1  0.811  0.189  0.250  1.0
  U  U9  1  0.189  0.811  0.750  1.0
  C  C10  1  0.839  0.916  0.091  1.0
  C  C11  1  0.161  0.084  0.909  1.0
  C  C12  1  0.084  0.161  0.409  1.0
  C  C13  1  0.916  0.839  0.591  1.0
  C  C14  1  0.507  0.493  0.250  1.0
  C  C15  1  0.493  0.507  0.750  1.0
  O  O16  1  0.660  0.040  0.317  1.0
  O  O17  1  0.340  0.960  0.683  1.0
  O  O18  1  0.960  0.340  0.183  1.0
  O  O19  1  0.040  0.660  0.817  1.0
  O  O20  1  0.911  0.963  0.664  1.0
  O  O21  1  0.089  0.037  0.336  1.0
  O  O22  1  0.037  0.089  0.836  1.0
  O  O23  1  0.963  0.911  0.164  1.0
  O  O24  1  0.783  0.829  0.534  1.0
  O  O25  1  0.217  0.171  0.466  1.0
  O  O26  1  0.171  0.217  0.966  1.0
  O  O27  1  0.829  0.783  0.034  1.0
  O  O28  1  0.374  0.626  0.250  1.0
  O  O29  1  0.626  0.374  0.750  1.0
  O  O30  1  0.543  0.380  0.172  1.0
  O  O31  1  0.457  0.620  0.828  1.0
  O  O32  1  0.620  0.457  0.328  1.0
  O  O33  1  0.380  0.543  0.672  1.0
  O  O34  1  0.725  0.074  0.085  1.0
  O  O35  1  0.275  0.926  0.915  1.0
  O  O36  1  0.926  0.275  0.415  1.0
  O  O37  1  0.074  0.725  0.585  1.0
[/CIF]
.