The structure described by Rb6Na2U2C6O23 crystallizes in the triclinic P1 space group. There are six inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(10), one O(18), one O(21), one O(23), one O(3), one O(6), and one O(7) atom. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(19), one O(20), one O(23), one O(5), and one O(8) atom. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one O(11), one O(17), one O(2), one O(22), one O(23), one O(4), and one O(9) atom. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(10), one O(18), one O(21), one O(3), one O(6), and one O(7) atom. In the fifth Rb site, Rb(5) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(19), one O(20), one O(5), and one O(8) atom. In the sixth Rb site, Rb(6) is bonded in a 6-coordinate geometry to one O(11), one O(17), one O(2), one O(22), one O(4), and one O(9) atom. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(15), one O(16), one O(7), one O(8), and one O(9) atom to form NaO5 trigonal bipyramids that share corners with two equivalent U(2)O8 hexagonal bipyramids. In the second Na site, Na(2) is bonded to one O(10), one O(11), one O(12), one O(13), and one O(14) atom to form NaO5 trigonal bipyramids that share corners with two equivalent U(1)O8 hexagonal bipyramids. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(13), one O(14), one O(17), one O(18), one O(19), one O(2), and one O(3) atom to form distorted UO8 hexagonal bipyramids that share corners with two equivalent Na(2)O5 trigonal bipyramids. In the second U site, U(2) is bonded to one O(15), one O(16), one O(20), one O(21), one O(22), one O(4), one O(5), and one O(6) atom to form distorted UO8 hexagonal bipyramids that share corners with two equivalent Na(1)O5 trigonal bipyramids. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(17), and one O(7) atom. In the second C site, C(2,3) is bonded in a trigonal planar geometry to one O(18), one O(2), and one O(8) atom. In the third C site, C(4,5) is bonded in a trigonal planar geometry to one O(10), one O(20), and one O(4) atom. In the fourth C site, C(6) is bonded in a trigonal planar geometry to one O(12), one O(22), and one O(6) atom. There are twenty-three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(5), one U(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(3); one Rb(6); one U(1); and one C(2,3) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1); one Rb(4); one U(1); and one C(2,3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(3); one Rb(6); one U(2); and one C(4,5) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2); one Rb(5); one U(2); and one C(4,5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(4), one U(2), and one C(6) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(4), one Na(1), and one C(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Rb(2); one Rb(5); one Na(1); and one C(2,3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Rb(3); one Rb(6); one Na(1); and one C(2,3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(1); one Rb(4); one Na(2); and one C(4,5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Rb(3); one Rb(6); one Na(2); and one C(4,5) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(5), one Na(2), and one C(6) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Na(2) and one U(1) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Na(2) and one U(1) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Na(1) and one U(2) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Na(1) and one U(2) atom. In the seventeenth O site, O(17) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(6), one U(1), and one C(1) atom. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Rb(1); one Rb(4); one U(1); and one C(2,3) atom. In the nineteenth O site, O(19) is bonded in a distorted single-bond geometry to one Rb(2); one Rb(5); one U(1); and one C(2,3) atom. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one Rb(2); one Rb(5); one U(2); and one C(4,5) atom. In the twenty-first O site, O(21) is bonded in a distorted single-bond geometry to one Rb(1); one Rb(4); one U(2); and one C(4,5) atom. In the twenty-second O site, O(22) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(6), one U(2), and one C(6) atom. In the twenty-third O site, O(23) is bonded in a distorted T-shaped geometry to one Rb(1), one Rb(2), and one Rb(3) atom. is represented by the CIF file [CIF]
data_Rb6Na2U2C6O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.561
_cell_length_b   9.631
_cell_length_c   9.634
_cell_angle_alpha   120.004
_cell_angle_beta   90.011
_cell_angle_gamma   89.996
_symmetry_Int_Tables_number   1
_cell_volume   687.824
_cell_formula_units_Z   1
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  0.999  0.281  0.000  1.0
  Rb  Rb1  1  0.999  0.719  0.719  1.0
  Rb  Rb2  1  0.999  1.000  0.281  1.0
  Rb  Rb3  1  0.500  0.283  0.000  1.0
  Rb  Rb4  1  0.500  0.718  0.717  1.0
  Rb  Rb5  1  0.500  1.000  0.282  1.0
  Na  Na6  1  0.750  0.333  0.666  1.0
  Na  Na7  1  0.250  0.667  0.333  1.0
  U  U8  1  0.750  0.667  0.333  1.0
  U  U9  1  0.250  0.333  0.667  1.0
  C  C10  1  0.750  0.987  0.616  1.0
  C  C11  1  0.750  0.629  0.013  1.0
  C  C12  1  0.750  0.384  0.371  1.0
  C  C13  1  0.250  0.371  0.385  1.0
  C  C14  1  0.250  0.616  0.986  1.0
  C  C15  1  0.250  0.014  0.629  1.0
  O  O16  1  0.749  0.854  0.624  1.0
  O  O17  1  0.749  0.770  0.146  1.0
  O  O18  1  0.750  0.376  0.230  1.0
  O  O19  1  0.250  0.230  0.377  1.0
  O  O20  1  0.250  0.623  0.854  1.0
  O  O21  1  0.250  0.146  0.769  1.0
  O  O22  1  0.749  0.125  0.738  1.0
  O  O23  1  0.749  0.612  0.875  1.0
  O  O24  1  0.749  0.262  0.388  1.0
  O  O25  1  0.250  0.387  0.262  1.0
  O  O26  1  0.250  0.738  0.125  1.0
  O  O27  1  0.250  0.875  0.613  1.0
  O  O28  1  0.966  0.667  0.333  1.0
  O  O29  1  0.534  0.667  0.333  1.0
  O  O30  1  0.465  0.333  0.667  1.0
  O  O31  1  0.035  0.333  0.667  1.0
  O  O32  1  0.750  0.960  0.468  1.0
  O  O33  1  0.750  0.507  0.040  1.0
  O  O34  1  0.750  0.532  0.493  1.0
  O  O35  1  0.250  0.493  0.532  1.0
  O  O36  1  0.250  0.468  0.961  1.0
  O  O37  1  0.250  0.039  0.507  1.0
  O  O38  1  0.205  0.001  0.001  1.0
[/CIF]
.
The structure described by Rb6Na2U2C6O23 crystallizes in the triclinic P1 space group. There are six inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(10), one O(18), one O(21), one O(23), one O(3), one O(6), and one O(7) atom. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(1), one O(12), one O(19), one O(20), one O(23), one O(5), and one O(8) atom. In the third Rb site, Rb(3) is bonded in a 7-coordinate geometry to one O(11), one O(17), one O(2), one O(22), one O(23), one O(4), and one O(9) atom. In the fourth Rb site, Rb(4) is bonded in a 6-coordinate geometry to one O(10), one O(18), one O(21), one O(3), one O(6), and one O(7) atom. In the fifth Rb site, Rb(5) is bonded in a 6-coordinate geometry to one O(1), one O(12), one O(19), one O(20), one O(5), and one O(8) atom. In the sixth Rb site, Rb(6) is bonded in a 6-coordinate geometry to one O(11), one O(17), one O(2), one O(22), one O(4), and one O(9) atom. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(15), one O(16), one O(7), one O(8), and one O(9) atom to form NaO5 trigonal bipyramids that share corners with two equivalent U(2)O8 hexagonal bipyramids. In the second Na site, Na(2) is bonded to one O(10), one O(11), one O(12), one O(13), and one O(14) atom to form NaO5 trigonal bipyramids that share corners with two equivalent U(1)O8 hexagonal bipyramids. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(13), one O(14), one O(17), one O(18), one O(19), one O(2), and one O(3) atom to form distorted UO8 hexagonal bipyramids that share corners with two equivalent Na(2)O5 trigonal bipyramids. In the second U site, U(2) is bonded to one O(15), one O(16), one O(20), one O(21), one O(22), one O(4), one O(5), and one O(6) atom to form distorted UO8 hexagonal bipyramids that share corners with two equivalent Na(1)O5 trigonal bipyramids. There are four inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one O(1), one O(17), and one O(7) atom. In the second C site, C(2,3) is bonded in a trigonal planar geometry to one O(18), one O(2), and one O(8) atom. In the third C site, C(4,5) is bonded in a trigonal planar geometry to one O(10), one O(20), and one O(4) atom. In the fourth C site, C(6) is bonded in a trigonal planar geometry to one O(12), one O(22), and one O(6) atom. There are twenty-three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Rb(2), one Rb(5), one U(1), and one C(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(3); one Rb(6); one U(1); and one C(2,3) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Rb(1); one Rb(4); one U(1); and one C(2,3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(3); one Rb(6); one U(2); and one C(4,5) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2); one Rb(5); one U(2); and one C(4,5) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(4), one U(2), and one C(6) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(4), one Na(1), and one C(1) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Rb(2); one Rb(5); one Na(1); and one C(2,3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Rb(3); one Rb(6); one Na(1); and one C(2,3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Rb(1); one Rb(4); one Na(2); and one C(4,5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Rb(3); one Rb(6); one Na(2); and one C(4,5) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Rb(2), one Rb(5), one Na(2), and one C(6) atom. In the thirteenth O site, O(13) is bonded in a distorted linear geometry to one Na(2) and one U(1) atom. In the fourteenth O site, O(14) is bonded in a distorted linear geometry to one Na(2) and one U(1) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Na(1) and one U(2) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one Na(1) and one U(2) atom. In the seventeenth O site, O(17) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(6), one U(1), and one C(1) atom. In the eighteenth O site, O(18) is bonded in a distorted single-bond geometry to one Rb(1); one Rb(4); one U(1); and one C(2,3) atom. In the nineteenth O site, O(19) is bonded in a distorted single-bond geometry to one Rb(2); one Rb(5); one U(1); and one C(2,3) atom. In the twentieth O site, O(20) is bonded in a distorted single-bond geometry to one Rb(2); one Rb(5); one U(2); and one C(4,5) atom. In the twenty-first O site, O(21) is bonded in a distorted single-bond geometry to one Rb(1); one Rb(4); one U(2); and one C(4,5) atom. In the twenty-second O site, O(22) is bonded in a distorted single-bond geometry to one Rb(3), one Rb(6), one U(2), and one C(6) atom. In the twenty-third O site, O(23) is bonded in a distorted T-shaped geometry to one Rb(1), one Rb(2), and one Rb(3) atom. is represented by the CIF file [CIF]
data_Rb6Na2U2C6O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.561
_cell_length_b   9.631
_cell_length_c   9.634
_cell_angle_alpha   120.004
_cell_angle_beta   90.011
_cell_angle_gamma   89.996
_symmetry_Int_Tables_number   1
_cell_volume   687.824
_cell_formula_units_Z   1
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  0.999  0.281  0.000  1.0
  Rb  Rb1  1  0.999  0.719  0.719  1.0
  Rb  Rb2  1  0.999  1.000  0.281  1.0
  Rb  Rb3  1  0.500  0.283  0.000  1.0
  Rb  Rb4  1  0.500  0.718  0.717  1.0
  Rb  Rb5  1  0.500  1.000  0.282  1.0
  Na  Na6  1  0.750  0.333  0.666  1.0
  Na  Na7  1  0.250  0.667  0.333  1.0
  U  U8  1  0.750  0.667  0.333  1.0
  U  U9  1  0.250  0.333  0.667  1.0
  C  C10  1  0.750  0.987  0.616  1.0
  C  C11  1  0.750  0.629  0.013  1.0
  C  C12  1  0.750  0.384  0.371  1.0
  C  C13  1  0.250  0.371  0.385  1.0
  C  C14  1  0.250  0.616  0.986  1.0
  C  C15  1  0.250  0.014  0.629  1.0
  O  O16  1  0.749  0.854  0.624  1.0
  O  O17  1  0.749  0.770  0.146  1.0
  O  O18  1  0.750  0.376  0.230  1.0
  O  O19  1  0.250  0.230  0.377  1.0
  O  O20  1  0.250  0.623  0.854  1.0
  O  O21  1  0.250  0.146  0.769  1.0
  O  O22  1  0.749  0.125  0.738  1.0
  O  O23  1  0.749  0.612  0.875  1.0
  O  O24  1  0.749  0.262  0.388  1.0
  O  O25  1  0.250  0.387  0.262  1.0
  O  O26  1  0.250  0.738  0.125  1.0
  O  O27  1  0.250  0.875  0.613  1.0
  O  O28  1  0.966  0.667  0.333  1.0
  O  O29  1  0.534  0.667  0.333  1.0
  O  O30  1  0.465  0.333  0.667  1.0
  O  O31  1  0.035  0.333  0.667  1.0
  O  O32  1  0.750  0.960  0.468  1.0
  O  O33  1  0.750  0.507  0.040  1.0
  O  O34  1  0.750  0.532  0.493  1.0
  O  O35  1  0.250  0.493  0.532  1.0
  O  O36  1  0.250  0.468  0.961  1.0
  O  O37  1  0.250  0.039  0.507  1.0
  O  O38  1  0.205  0.001  0.001  1.0
[/CIF]
.