The structure described by CsU2F9 crystallizes in the triclinic P1 space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 6-coordinate geometry to one F(10), one F(12), one F(16), one F(18), one F(2), one F(3), one F(6), and one F(9) atom. In the second Cs site, Cs(2) is bonded in a 6-coordinate geometry to one F(1), one F(12), one F(16), one F(17), one F(3), one F(7), and one F(8) atom. There are four inequivalent U sites. In the first U site, U(1) is bonded in a 8-coordinate geometry to one F(1), one F(16), one F(17), one F(18), one F(4), one F(5), one F(6), and one F(8) atom. In the second U site, U(2) is bonded in a 8-coordinate geometry to one F(10), one F(12), one F(2), one F(3), one F(4), one F(5), one F(7), and one F(9) atom. In the third U site, U(3) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(13), one F(14), one F(16), one F(17), one F(6), one F(7), and one F(8) atom. In the fourth U site, U(4) is bonded in a 9-coordinate geometry to one F(1), one F(12), one F(13), one F(14), one F(15), one F(18), one F(2), one F(3), and one F(9) atom. There are eighteen inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to one Cs(2), one U(1), and one U(4) atom. In the second F site, F(2) is bonded in a trigonal planar geometry to one Cs(1), one U(2), and one U(4) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Cs(1), one Cs(2), one U(2), and one U(4) atom. In the fourth F site, F(4) is bonded in a bent 150 degrees geometry to one U(1) and one U(2) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one U(1) and one U(2) atom. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Cs(1), one U(1), and one U(3) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to one Cs(2), one U(2), and one U(3) atom. In the eighth F site, F(8) is bonded in a trigonal planar geometry to one Cs(2), one U(1), and one U(3) atom. In the ninth F site, F(9) is bonded in a trigonal planar geometry to one Cs(1), one U(2), and one U(4) atom. In the tenth F site, F(10) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one U(2), and one U(3) atom. In the eleventh F site, F(11) is bonded in a single-bond geometry to one U(3) atom. In the twelfth F site, F(12) is bonded in a 4-coordinate geometry to one Cs(1), one Cs(2), one U(2), and one U(4) atom. In the thirteenth F site, F(13) is bonded in a bent 150 degrees geometry to one U(3) and one U(4) atom. In the fourteenth F site, F(14) is bonded in a bent 150 degrees geometry to one U(3) and one U(4) atom. In the fifteenth F site, F(15) is bonded in a single-bond geometry to one U(4) atom. In the sixteenth F site, F(16) is bonded in a 4-coordinate geometry to one Cs(1), one Cs(2), one U(1), and one U(3) atom. In the seventeenth F site, F(17) is bonded in a trigonal planar geometry to one Cs(2), one U(1), and one U(3) atom. In the eighteenth F site, F(18) is bonded in a distorted trigonal planar geometry to one Cs(1), one U(1), and one U(4) atom. is represented by the CIF card [CIF]
data_CsU2F9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.048
_cell_length_b   8.378
_cell_length_c   8.705
_cell_angle_alpha   115.873
_cell_angle_beta   90.037
_cell_angle_gamma   114.355
_symmetry_Int_Tables_number   1
_cell_volume   410.966
_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
  Cs  Cs0  1  0.110  0.993  0.246  1.0
  Cs  Cs1  1  0.877  0.994  0.750  1.0
  U  U2  1  0.186  0.565  0.698  1.0
  U  U3  1  0.378  0.565  0.198  1.0
  U  U4  1  0.613  0.415  0.789  1.0
  U  U5  1  0.803  0.416  0.290  1.0
  F  F6  1  0.027  0.678  0.575  1.0
  F  F7  1  0.125  0.672  0.286  1.0
  F  F8  1  0.053  0.314  0.132  1.0
  F  F9  1  0.258  0.627  0.990  1.0
  F  F10  1  0.364  0.623  0.489  1.0
  F  F11  1  0.264  0.313  0.630  1.0
  F  F12  1  0.336  0.319  0.927  1.0
  F  F13  1  0.543  0.671  0.786  1.0
  F  F14  1  0.438  0.333  0.219  1.0
  F  F15  1  0.647  0.676  0.074  1.0
  F  F16  1  0.479  0.102  0.656  1.0
  F  F17  1  0.729  0.688  0.364  1.0
  F  F18  1  0.643  0.385  0.517  1.0
  F  F19  1  0.743  0.384  0.017  1.0
  F  F20  1  0.635  0.103  0.155  1.0
  F  F21  1  0.955  0.688  0.863  1.0
  F  F22  1  0.899  0.335  0.721  1.0
  F  F23  1  0.983  0.319  0.428  1.0
[/CIF]
.
The structure described by CsU2F9 crystallizes in the triclinic P1 space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 6-coordinate geometry to one F(10), one F(12), one F(16), one F(18), one F(2), one F(3), one F(6), and one F(9) atom. In the second Cs site, Cs(2) is bonded in a 6-coordinate geometry to one F(1), one F(12), one F(16), one F(17), one F(3), one F(7), and one F(8) atom. There are four inequivalent U sites. In the first U site, U(1) is bonded in a 8-coordinate geometry to one F(1), one F(16), one F(17), one F(18), one F(4), one F(5), one F(6), and one F(8) atom. In the second U site, U(2) is bonded in a 8-coordinate geometry to one F(10), one F(12), one F(2), one F(3), one F(4), one F(5), one F(7), and one F(9) atom. In the third U site, U(3) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(13), one F(14), one F(16), one F(17), one F(6), one F(7), and one F(8) atom. In the fourth U site, U(4) is bonded in a 9-coordinate geometry to one F(1), one F(12), one F(13), one F(14), one F(15), one F(18), one F(2), one F(3), and one F(9) atom. There are eighteen inequivalent F sites. In the first F site, F(1) is bonded in a distorted trigonal non-coplanar geometry to one Cs(2), one U(1), and one U(4) atom. In the second F site, F(2) is bonded in a trigonal planar geometry to one Cs(1), one U(2), and one U(4) atom. In the third F site, F(3) is bonded in a 4-coordinate geometry to one Cs(1), one Cs(2), one U(2), and one U(4) atom. In the fourth F site, F(4) is bonded in a bent 150 degrees geometry to one U(1) and one U(2) atom. In the fifth F site, F(5) is bonded in a bent 150 degrees geometry to one U(1) and one U(2) atom. In the sixth F site, F(6) is bonded in a 3-coordinate geometry to one Cs(1), one U(1), and one U(3) atom. In the seventh F site, F(7) is bonded in a distorted trigonal planar geometry to one Cs(2), one U(2), and one U(3) atom. In the eighth F site, F(8) is bonded in a trigonal planar geometry to one Cs(2), one U(1), and one U(3) atom. In the ninth F site, F(9) is bonded in a trigonal planar geometry to one Cs(1), one U(2), and one U(4) atom. In the tenth F site, F(10) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one U(2), and one U(3) atom. In the eleventh F site, F(11) is bonded in a single-bond geometry to one U(3) atom. In the twelfth F site, F(12) is bonded in a 4-coordinate geometry to one Cs(1), one Cs(2), one U(2), and one U(4) atom. In the thirteenth F site, F(13) is bonded in a bent 150 degrees geometry to one U(3) and one U(4) atom. In the fourteenth F site, F(14) is bonded in a bent 150 degrees geometry to one U(3) and one U(4) atom. In the fifteenth F site, F(15) is bonded in a single-bond geometry to one U(4) atom. In the sixteenth F site, F(16) is bonded in a 4-coordinate geometry to one Cs(1), one Cs(2), one U(1), and one U(3) atom. In the seventeenth F site, F(17) is bonded in a trigonal planar geometry to one Cs(2), one U(1), and one U(3) atom. In the eighteenth F site, F(18) is bonded in a distorted trigonal planar geometry to one Cs(1), one U(1), and one U(4) atom. is represented by the CIF card [CIF]
data_CsU2F9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.048
_cell_length_b   8.378
_cell_length_c   8.705
_cell_angle_alpha   115.873
_cell_angle_beta   90.037
_cell_angle_gamma   114.355
_symmetry_Int_Tables_number   1
_cell_volume   410.966
_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
  Cs  Cs0  1  0.110  0.993  0.246  1.0
  Cs  Cs1  1  0.877  0.994  0.750  1.0
  U  U2  1  0.186  0.565  0.698  1.0
  U  U3  1  0.378  0.565  0.198  1.0
  U  U4  1  0.613  0.415  0.789  1.0
  U  U5  1  0.803  0.416  0.290  1.0
  F  F6  1  0.027  0.678  0.575  1.0
  F  F7  1  0.125  0.672  0.286  1.0
  F  F8  1  0.053  0.314  0.132  1.0
  F  F9  1  0.258  0.627  0.990  1.0
  F  F10  1  0.364  0.623  0.489  1.0
  F  F11  1  0.264  0.313  0.630  1.0
  F  F12  1  0.336  0.319  0.927  1.0
  F  F13  1  0.543  0.671  0.786  1.0
  F  F14  1  0.438  0.333  0.219  1.0
  F  F15  1  0.647  0.676  0.074  1.0
  F  F16  1  0.479  0.102  0.656  1.0
  F  F17  1  0.729  0.688  0.364  1.0
  F  F18  1  0.643  0.385  0.517  1.0
  F  F19  1  0.743  0.384  0.017  1.0
  F  F20  1  0.635  0.103  0.155  1.0
  F  F21  1  0.955  0.688  0.863  1.0
  F  F22  1  0.899  0.335  0.721  1.0
  F  F23  1  0.983  0.319  0.428  1.0
[/CIF]
.