The crystal structure described by K4UO2(CO3)3 crystallizes in the monoclinic C2/c space group. There are two inequivalent K sites. In the first K site, K(1) 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. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(6), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. U(1) is bonded in a distorted hexagonal bipyramidal geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(2) atoms. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), two equivalent K(2), and one U(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), 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 K(1), two equivalent K(2), one U(1), and one C(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), one U(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent K(1), two equivalent K(2), and one C(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one C(2) atom. is represented by the CIF card [CIF]
data_K4UC3O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.020
_cell_length_b   7.020
_cell_length_c   12.453
_cell_angle_alpha   86.628
_cell_angle_beta   86.628
_cell_angle_gamma   83.541
_symmetry_Int_Tables_number   1
_cell_volume   607.989
_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
  K  K0  1  0.425  0.787  0.957  1.0
  K  K1  1  0.213  0.575  0.543  1.0
  K  K2  1  0.575  0.213  0.043  1.0
  K  K3  1  0.787  0.425  0.457  1.0
  K  K4  1  0.033  0.334  0.157  1.0
  K  K5  1  0.666  0.967  0.343  1.0
  K  K6  1  0.967  0.666  0.843  1.0
  K  K7  1  0.334  0.033  0.657  1.0
  U  U8  1  0.200  0.800  0.250  1.0
  U  U9  1  0.800  0.200  0.750  1.0
  C  C10  1  0.510  0.490  0.250  1.0
  C  C11  1  0.490  0.510  0.750  1.0
  C  C12  1  0.168  0.081  0.414  1.0
  C  C13  1  0.919  0.832  0.086  1.0
  C  C14  1  0.832  0.919  0.586  1.0
  C  C15  1  0.081  0.168  0.914  1.0
  O  O16  1  0.364  0.959  0.179  1.0
  O  O17  1  0.041  0.636  0.321  1.0
  O  O18  1  0.636  0.041  0.821  1.0
  O  O19  1  0.959  0.364  0.679  1.0
  O  O20  1  0.609  0.476  0.829  1.0
  O  O21  1  0.524  0.391  0.671  1.0
  O  O22  1  0.391  0.524  0.171  1.0
  O  O23  1  0.476  0.609  0.329  1.0
  O  O24  1  0.921  0.287  0.920  1.0
  O  O25  1  0.713  0.079  0.580  1.0
  O  O26  1  0.079  0.713  0.080  1.0
  O  O27  1  0.287  0.921  0.420  1.0
  O  O28  1  0.084  0.045  0.837  1.0
  O  O29  1  0.955  0.916  0.663  1.0
  O  O30  1  0.916  0.955  0.163  1.0
  O  O31  1  0.045  0.084  0.337  1.0
  O  O32  1  0.354  0.646  0.750  1.0
  O  O33  1  0.646  0.354  0.250  1.0
  O  O34  1  0.218  0.174  0.974  1.0
  O  O35  1  0.826  0.782  0.526  1.0
  O  O36  1  0.782  0.826  0.026  1.0
  O  O37  1  0.174  0.218  0.474  1.0
[/CIF]
.
The crystal structure described by K4UO2(CO3)3 crystallizes in the monoclinic C2/c space group. There are two inequivalent K sites. In the first K site, K(1) 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. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(6), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. U(1) is bonded in a distorted hexagonal bipyramidal geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(2) atoms. In the second C site, C(2) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), two equivalent K(2), and one U(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), 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 K(1), two equivalent K(2), one U(1), and one C(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), one U(1), and one C(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to two equivalent K(1), two equivalent K(2), and one C(1) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(2), two equivalent K(1), and one C(2) atom. is represented by the CIF card [CIF]
data_K4UC3O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.020
_cell_length_b   7.020
_cell_length_c   12.453
_cell_angle_alpha   86.628
_cell_angle_beta   86.628
_cell_angle_gamma   83.541
_symmetry_Int_Tables_number   1
_cell_volume   607.989
_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
  K  K0  1  0.425  0.787  0.957  1.0
  K  K1  1  0.213  0.575  0.543  1.0
  K  K2  1  0.575  0.213  0.043  1.0
  K  K3  1  0.787  0.425  0.457  1.0
  K  K4  1  0.033  0.334  0.157  1.0
  K  K5  1  0.666  0.967  0.343  1.0
  K  K6  1  0.967  0.666  0.843  1.0
  K  K7  1  0.334  0.033  0.657  1.0
  U  U8  1  0.200  0.800  0.250  1.0
  U  U9  1  0.800  0.200  0.750  1.0
  C  C10  1  0.510  0.490  0.250  1.0
  C  C11  1  0.490  0.510  0.750  1.0
  C  C12  1  0.168  0.081  0.414  1.0
  C  C13  1  0.919  0.832  0.086  1.0
  C  C14  1  0.832  0.919  0.586  1.0
  C  C15  1  0.081  0.168  0.914  1.0
  O  O16  1  0.364  0.959  0.179  1.0
  O  O17  1  0.041  0.636  0.321  1.0
  O  O18  1  0.636  0.041  0.821  1.0
  O  O19  1  0.959  0.364  0.679  1.0
  O  O20  1  0.609  0.476  0.829  1.0
  O  O21  1  0.524  0.391  0.671  1.0
  O  O22  1  0.391  0.524  0.171  1.0
  O  O23  1  0.476  0.609  0.329  1.0
  O  O24  1  0.921  0.287  0.920  1.0
  O  O25  1  0.713  0.079  0.580  1.0
  O  O26  1  0.079  0.713  0.080  1.0
  O  O27  1  0.287  0.921  0.420  1.0
  O  O28  1  0.084  0.045  0.837  1.0
  O  O29  1  0.955  0.916  0.663  1.0
  O  O30  1  0.916  0.955  0.163  1.0
  O  O31  1  0.045  0.084  0.337  1.0
  O  O32  1  0.354  0.646  0.750  1.0
  O  O33  1  0.646  0.354  0.250  1.0
  O  O34  1  0.218  0.174  0.974  1.0
  O  O35  1  0.826  0.782  0.526  1.0
  O  O36  1  0.782  0.826  0.026  1.0
  O  O37  1  0.174  0.218  0.474  1.0
[/CIF]
.