The crystal structure described by NaU2F9 crystallizes in the monoclinic Cc space group. Na(1) is bonded in a distorted pentagonal pyramidal geometry to one F(2), one F(3), one F(4), one F(5), one F(8), and one F(9) atom. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 9-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), one F(8), one F(9), and two equivalent F(6) atoms. In the second U site, U(2) is bonded in a 9-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), one F(8), one F(9), and two equivalent F(7) atoms. There are nine inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to one U(1) and one U(2) atom. In the second F site, F(2) is bonded in a trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the third F site, F(3) is bonded in a trigonal planar geometry to one Na(1), one U(1), and one U(2) atom. In the fourth F site, F(4) is bonded in a trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the fifth F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to two equivalent U(1) atoms. In the seventh F site, F(7) is bonded in a bent 150 degrees geometry to two equivalent U(2) atoms. In the eighth F site, F(8) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the ninth F site, F(9) is bonded in a trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. is represented by the CIF file [CIF]
data_NaU2F9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.710
_cell_length_b   6.710
_cell_length_c   8.647
_cell_angle_alpha   78.783
_cell_angle_beta   78.783
_cell_angle_gamma   62.677
_symmetry_Int_Tables_number   1
_cell_volume   336.773
_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
  Na  Na0  1  0.583  0.374  0.403  1.0
  Na  Na1  1  0.374  0.583  0.903  1.0
  U  U2  1  0.890  0.706  0.312  1.0
  U  U3  1  0.294  0.109  0.188  1.0
  U  U4  1  0.109  0.294  0.688  1.0
  U  U5  1  0.706  0.890  0.812  1.0
  F  F6  1  0.085  0.915  0.251  1.0
  F  F7  1  0.915  0.085  0.751  1.0
  F  F8  1  0.915  0.376  0.241  1.0
  F  F9  1  0.616  0.088  0.270  1.0
  F  F10  1  0.088  0.616  0.770  1.0
  F  F11  1  0.376  0.915  0.741  1.0
  F  F12  1  0.185  0.526  0.468  1.0
  F  F13  1  0.466  0.820  0.027  1.0
  F  F14  1  0.820  0.466  0.527  1.0
  F  F15  1  0.526  0.185  0.968  1.0
  F  F16  1  0.871  0.788  0.045  1.0
  F  F17  1  0.220  0.127  0.455  1.0
  F  F18  1  0.127  0.220  0.955  1.0
  F  F19  1  0.788  0.871  0.545  1.0
  F  F20  1  0.532  0.748  0.321  1.0
  F  F21  1  0.246  0.475  0.168  1.0
  F  F22  1  0.475  0.246  0.668  1.0
  F  F23  1  0.748  0.532  0.821  1.0
[/CIF]
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The crystal structure described by NaU2F9 crystallizes in the monoclinic Cc space group. Na(1) is bonded in a distorted pentagonal pyramidal geometry to one F(2), one F(3), one F(4), one F(5), one F(8), and one F(9) atom. There are two inequivalent U sites. In the first U site, U(1) is bonded in a 9-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), one F(8), one F(9), and two equivalent F(6) atoms. In the second U site, U(2) is bonded in a 9-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), one F(8), one F(9), and two equivalent F(7) atoms. There are nine inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to one U(1) and one U(2) atom. In the second F site, F(2) is bonded in a trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the third F site, F(3) is bonded in a trigonal planar geometry to one Na(1), one U(1), and one U(2) atom. In the fourth F site, F(4) is bonded in a trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the fifth F site, F(5) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the sixth F site, F(6) is bonded in a bent 150 degrees geometry to two equivalent U(1) atoms. In the seventh F site, F(7) is bonded in a bent 150 degrees geometry to two equivalent U(2) atoms. In the eighth F site, F(8) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. In the ninth F site, F(9) is bonded in a trigonal non-coplanar geometry to one Na(1), one U(1), and one U(2) atom. is represented by the CIF file [CIF]
data_NaU2F9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.710
_cell_length_b   6.710
_cell_length_c   8.647
_cell_angle_alpha   78.783
_cell_angle_beta   78.783
_cell_angle_gamma   62.677
_symmetry_Int_Tables_number   1
_cell_volume   336.773
_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
  Na  Na0  1  0.583  0.374  0.403  1.0
  Na  Na1  1  0.374  0.583  0.903  1.0
  U  U2  1  0.890  0.706  0.312  1.0
  U  U3  1  0.294  0.109  0.188  1.0
  U  U4  1  0.109  0.294  0.688  1.0
  U  U5  1  0.706  0.890  0.812  1.0
  F  F6  1  0.085  0.915  0.251  1.0
  F  F7  1  0.915  0.085  0.751  1.0
  F  F8  1  0.915  0.376  0.241  1.0
  F  F9  1  0.616  0.088  0.270  1.0
  F  F10  1  0.088  0.616  0.770  1.0
  F  F11  1  0.376  0.915  0.741  1.0
  F  F12  1  0.185  0.526  0.468  1.0
  F  F13  1  0.466  0.820  0.027  1.0
  F  F14  1  0.820  0.466  0.527  1.0
  F  F15  1  0.526  0.185  0.968  1.0
  F  F16  1  0.871  0.788  0.045  1.0
  F  F17  1  0.220  0.127  0.455  1.0
  F  F18  1  0.127  0.220  0.955  1.0
  F  F19  1  0.788  0.871  0.545  1.0
  F  F20  1  0.532  0.748  0.321  1.0
  F  F21  1  0.246  0.475  0.168  1.0
  F  F22  1  0.475  0.246  0.668  1.0
  F  F23  1  0.748  0.532  0.821  1.0
[/CIF]
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