The structure described by Rb2U3(O5F4)2 crystallizes in the orthorhombic Ama2 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 11-coordinate geometry to one O(5), one O(6), one O(7), two equivalent O(1), two equivalent O(3), two equivalent F(3), and two equivalent F(4) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(5), one O(6), one O(7), two equivalent F(1), and two equivalent F(3) atoms. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(2), one F(1), one F(3), one F(4), and two equivalent F(2) atoms to form distorted UO2F5 pentagonal bipyramids that share corners with two equivalent U(1)O2F5 pentagonal bipyramids and corners with two equivalent U(2)O3F4 pentagonal bipyramids. In the second U site, U(2) is bonded to one O(4), two equivalent O(3), two equivalent F(1), and two equivalent F(4) atoms to form distorted corner-sharing UO3F4 pentagonal bipyramids. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a single-bond geometry to one U(2) atom. In the second O site, O(5) is bonded in an L-shaped geometry to one Rb(1) and one Rb(2) atom. In the third O site, O(6) is bonded in a water-like geometry to one Rb(1) and one Rb(2) atom. In the fourth O site, O(7) is bonded in a bent 120 degrees geometry to one Rb(1) and one Rb(2) atom. In the fifth O site, O(1) is bonded in a single-bond geometry to one Rb(1) and one U(1) atom. In the sixth O site, O(2) is bonded in a single-bond geometry to one U(1) atom. In the seventh O site, O(3) is bonded in a single-bond geometry to one Rb(1) and one U(2) atom. There are four inequivalent F sites. In the first F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent U(1) atoms. In the second F site, F(3) is bonded in a distorted trigonal planar geometry to one Rb(1), one Rb(2), and one U(1) atom. In the third F site, F(4) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one U(1), and one U(2) atom. In the fourth F site, F(1) is bonded in a distorted trigonal planar geometry to one Rb(2), one U(1), and one U(2) atom. is represented by the CIF file [CIF]
data_Rb2U3(O5F4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.423
_cell_length_b   8.423
_cell_length_c   13.444
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.364
_symmetry_Int_Tables_number   1
_cell_volume   831.259
_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  0.937  0.946  0.250  1.0
  Rb  Rb1  1  0.946  0.937  0.750  1.0
  Rb  Rb2  1  0.500  0.252  0.250  1.0
  Rb  Rb3  1  0.252  0.500  0.750  1.0
  U  U4  1  0.800  0.209  0.523  1.0
  U  U5  1  0.209  0.800  0.477  1.0
  U  U6  1  0.800  0.209  0.977  1.0
  U  U7  1  0.209  0.800  0.023  1.0
  U  U8  1  0.612  0.612  0.500  1.0
  U  U9  1  0.612  0.612  0.000  1.0
  O  O10  1  0.910  0.214  0.406  1.0
  O  O11  1  0.214  0.910  0.594  1.0
  O  O12  1  0.910  0.214  0.094  1.0
  O  O13  1  0.214  0.910  0.906  1.0
  O  O14  1  0.674  0.192  0.635  1.0
  O  O15  1  0.192  0.674  0.365  1.0
  O  O16  1  0.674  0.192  0.865  1.0
  O  O17  1  0.192  0.674  0.135  1.0
  O  O18  1  0.568  0.647  0.372  1.0
  O  O19  1  0.647  0.568  0.628  1.0
  O  O20  1  0.568  0.647  0.128  1.0
  O  O21  1  0.647  0.568  0.872  1.0
  O  O22  1  0.325  0.325  0.500  1.0
  O  O23  1  0.325  0.325  0.000  1.0
  O  O24  1  0.204  0.381  0.250  1.0
  O  O25  1  0.381  0.204  0.750  1.0
  O  O26  1  0.907  0.561  0.250  1.0
  O  O27  1  0.561  0.907  0.750  1.0
  O  O28  1  0.583  0.944  0.250  1.0
  O  O29  1  0.944  0.583  0.750  1.0
  F  F30  1  0.653  0.372  0.452  1.0
  F  F31  1  0.372  0.653  0.548  1.0
  F  F32  1  0.653  0.372  0.048  1.0
  F  F33  1  0.372  0.653  0.952  1.0
  F  F34  1  0.520  0.996  0.453  1.0
  F  F35  1  0.996  0.520  0.547  1.0
  F  F36  1  0.520  0.996  0.047  1.0
  F  F37  1  0.996  0.520  0.953  1.0
  F  F38  1  0.022  0.229  0.617  1.0
  F  F39  1  0.229  0.022  0.383  1.0
  F  F40  1  0.022  0.229  0.883  1.0
  F  F41  1  0.229  0.022  0.117  1.0
  F  F42  1  0.747  0.910  0.550  1.0
  F  F43  1  0.910  0.747  0.450  1.0
  F  F44  1  0.747  0.910  0.950  1.0
  F  F45  1  0.910  0.747  0.050  1.0
[/CIF]
.
The structure described by Rb2U3(O5F4)2 crystallizes in the orthorhombic Ama2 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 11-coordinate geometry to one O(5), one O(6), one O(7), two equivalent O(1), two equivalent O(3), two equivalent F(3), and two equivalent F(4) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(5), one O(6), one O(7), two equivalent F(1), and two equivalent F(3) atoms. There are two inequivalent U sites. In the first U site, U(1) is bonded to one O(1), one O(2), one F(1), one F(3), one F(4), and two equivalent F(2) atoms to form distorted UO2F5 pentagonal bipyramids that share corners with two equivalent U(1)O2F5 pentagonal bipyramids and corners with two equivalent U(2)O3F4 pentagonal bipyramids. In the second U site, U(2) is bonded to one O(4), two equivalent O(3), two equivalent F(1), and two equivalent F(4) atoms to form distorted corner-sharing UO3F4 pentagonal bipyramids. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a single-bond geometry to one U(2) atom. In the second O site, O(5) is bonded in an L-shaped geometry to one Rb(1) and one Rb(2) atom. In the third O site, O(6) is bonded in a water-like geometry to one Rb(1) and one Rb(2) atom. In the fourth O site, O(7) is bonded in a bent 120 degrees geometry to one Rb(1) and one Rb(2) atom. In the fifth O site, O(1) is bonded in a single-bond geometry to one Rb(1) and one U(1) atom. In the sixth O site, O(2) is bonded in a single-bond geometry to one U(1) atom. In the seventh O site, O(3) is bonded in a single-bond geometry to one Rb(1) and one U(2) atom. There are four inequivalent F sites. In the first F site, F(2) is bonded in a bent 150 degrees geometry to two equivalent U(1) atoms. In the second F site, F(3) is bonded in a distorted trigonal planar geometry to one Rb(1), one Rb(2), and one U(1) atom. In the third F site, F(4) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one U(1), and one U(2) atom. In the fourth F site, F(1) is bonded in a distorted trigonal planar geometry to one Rb(2), one U(1), and one U(2) atom. is represented by the CIF file [CIF]
data_Rb2U3(O5F4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.423
_cell_length_b   8.423
_cell_length_c   13.444
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.364
_symmetry_Int_Tables_number   1
_cell_volume   831.259
_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  0.937  0.946  0.250  1.0
  Rb  Rb1  1  0.946  0.937  0.750  1.0
  Rb  Rb2  1  0.500  0.252  0.250  1.0
  Rb  Rb3  1  0.252  0.500  0.750  1.0
  U  U4  1  0.800  0.209  0.523  1.0
  U  U5  1  0.209  0.800  0.477  1.0
  U  U6  1  0.800  0.209  0.977  1.0
  U  U7  1  0.209  0.800  0.023  1.0
  U  U8  1  0.612  0.612  0.500  1.0
  U  U9  1  0.612  0.612  0.000  1.0
  O  O10  1  0.910  0.214  0.406  1.0
  O  O11  1  0.214  0.910  0.594  1.0
  O  O12  1  0.910  0.214  0.094  1.0
  O  O13  1  0.214  0.910  0.906  1.0
  O  O14  1  0.674  0.192  0.635  1.0
  O  O15  1  0.192  0.674  0.365  1.0
  O  O16  1  0.674  0.192  0.865  1.0
  O  O17  1  0.192  0.674  0.135  1.0
  O  O18  1  0.568  0.647  0.372  1.0
  O  O19  1  0.647  0.568  0.628  1.0
  O  O20  1  0.568  0.647  0.128  1.0
  O  O21  1  0.647  0.568  0.872  1.0
  O  O22  1  0.325  0.325  0.500  1.0
  O  O23  1  0.325  0.325  0.000  1.0
  O  O24  1  0.204  0.381  0.250  1.0
  O  O25  1  0.381  0.204  0.750  1.0
  O  O26  1  0.907  0.561  0.250  1.0
  O  O27  1  0.561  0.907  0.750  1.0
  O  O28  1  0.583  0.944  0.250  1.0
  O  O29  1  0.944  0.583  0.750  1.0
  F  F30  1  0.653  0.372  0.452  1.0
  F  F31  1  0.372  0.653  0.548  1.0
  F  F32  1  0.653  0.372  0.048  1.0
  F  F33  1  0.372  0.653  0.952  1.0
  F  F34  1  0.520  0.996  0.453  1.0
  F  F35  1  0.996  0.520  0.547  1.0
  F  F36  1  0.520  0.996  0.047  1.0
  F  F37  1  0.996  0.520  0.953  1.0
  F  F38  1  0.022  0.229  0.617  1.0
  F  F39  1  0.229  0.022  0.383  1.0
  F  F40  1  0.022  0.229  0.883  1.0
  F  F41  1  0.229  0.022  0.117  1.0
  F  F42  1  0.747  0.910  0.550  1.0
  F  F43  1  0.910  0.747  0.450  1.0
  F  F44  1  0.747  0.910  0.950  1.0
  F  F45  1  0.910  0.747  0.050  1.0
[/CIF]
.