The crystal structure described by K2U3H4(O3F4)2 crystallizes in the orthorhombic Ama2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one H(1), one H(2), two equivalent O(2), two equivalent F(1), and two equivalent F(2) atoms. In the second K site, K(2) is bonded to one H(1), one H(2), one H(4), two equivalent F(2), and two equivalent F(4) atoms to form distorted KH3F4 pentagonal bipyramids that share corners with four equivalent U(1)O2F5 pentagonal bipyramids. 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(2), one F(4), and two equivalent F(3) atoms to form distorted UO2F5 pentagonal bipyramids that share corners with two equivalent K(2)H3F4 pentagonal bipyramids and corners with two equivalent U(1)O2F5 pentagonal bipyramids. In the second U site, U(2) is bonded in a 6-coordinate geometry to one H(3), two equivalent O(3), two equivalent F(1), and two equivalent F(4) atoms. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted bent 120 degrees geometry to one K(1) and one K(2) atom. In the second H site, H(2) is bonded in an L-shaped geometry to one K(1) and one K(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one U(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one K(2) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one K(1) and one U(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one U(2) atom. There are four inequivalent F sites. In the first F site, F(2) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one U(1) atom. In the second F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent U(1) atoms. In the third F site, F(4) is bonded in a trigonal planar geometry to one K(2), one U(1), and one U(2) atom. In the fourth F site, F(1) is bonded in a distorted bent 150 degrees geometry to one K(1), one U(1), and one U(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2U3H4(O3F4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.326
_cell_length_b   8.326
_cell_length_c   13.351
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   118.302
_symmetry_Int_Tables_number   1
_cell_volume   814.974
_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  0.632  0.653  0.250  1.0
  K  K1  1  0.653  0.632  0.750  1.0
  K  K2  1  0.368  0.110  0.250  1.0
  K  K3  1  0.110  0.368  0.750  1.0
  U  U4  1  0.804  0.396  0.024  1.0
  U  U5  1  0.396  0.804  0.976  1.0
  U  U6  1  0.396  0.804  0.524  1.0
  U  U7  1  0.804  0.396  0.476  1.0
  U  U8  1  0.991  0.991  0.000  1.0
  U  U9  1  0.991  0.991  0.500  1.0
  H  H10  1  0.641  0.001  0.250  1.0
  H  H11  1  0.001  0.641  0.750  1.0
  H  H12  1  0.250  0.385  0.250  1.0
  H  H13  1  0.385  0.250  0.750  1.0
  H  H14  1  0.298  0.298  0.000  1.0
  H  H15  1  0.298  0.298  0.500  1.0
  H  H16  1  0.054  0.759  0.250  1.0
  H  H17  1  0.759  0.054  0.750  1.0
  O  O18  1  0.932  0.410  0.134  1.0
  O  O19  1  0.410  0.932  0.866  1.0
  O  O20  1  0.410  0.932  0.634  1.0
  O  O21  1  0.932  0.410  0.366  1.0
  O  O22  1  0.398  0.693  0.093  1.0
  O  O23  1  0.693  0.398  0.907  1.0
  O  O24  1  0.693  0.398  0.593  1.0
  O  O25  1  0.398  0.693  0.407  1.0
  O  O26  1  0.961  0.047  0.127  1.0
  O  O27  1  0.047  0.961  0.873  1.0
  O  O28  1  0.047  0.961  0.627  1.0
  O  O29  1  0.961  0.047  0.373  1.0
  F  F30  1  0.858  0.699  0.055  1.0
  F  F31  1  0.699  0.858  0.945  1.0
  F  F32  1  0.699  0.858  0.555  1.0
  F  F33  1  0.858  0.699  0.445  1.0
  F  F34  1  0.378  0.576  0.619  1.0
  F  F35  1  0.576  0.378  0.381  1.0
  F  F36  1  0.576  0.378  0.119  1.0
  F  F37  1  0.378  0.576  0.881  1.0
  F  F38  1  0.084  0.613  0.547  1.0
  F  F39  1  0.613  0.084  0.453  1.0
  F  F40  1  0.613  0.084  0.047  1.0
  F  F41  1  0.084  0.613  0.953  1.0
  F  F42  1  0.960  0.237  0.554  1.0
  F  F43  1  0.237  0.960  0.446  1.0
  F  F44  1  0.237  0.960  0.054  1.0
  F  F45  1  0.960  0.237  0.946  1.0
[/CIF]
.
The crystal structure described by K2U3H4(O3F4)2 crystallizes in the orthorhombic Ama2 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one H(1), one H(2), two equivalent O(2), two equivalent F(1), and two equivalent F(2) atoms. In the second K site, K(2) is bonded to one H(1), one H(2), one H(4), two equivalent F(2), and two equivalent F(4) atoms to form distorted KH3F4 pentagonal bipyramids that share corners with four equivalent U(1)O2F5 pentagonal bipyramids. 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(2), one F(4), and two equivalent F(3) atoms to form distorted UO2F5 pentagonal bipyramids that share corners with two equivalent K(2)H3F4 pentagonal bipyramids and corners with two equivalent U(1)O2F5 pentagonal bipyramids. In the second U site, U(2) is bonded in a 6-coordinate geometry to one H(3), two equivalent O(3), two equivalent F(1), and two equivalent F(4) atoms. There are four inequivalent H sites. In the first H site, H(1) is bonded in a distorted bent 120 degrees geometry to one K(1) and one K(2) atom. In the second H site, H(2) is bonded in an L-shaped geometry to one K(1) and one K(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one U(2) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one K(2) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one U(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one K(1) and one U(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one U(2) atom. There are four inequivalent F sites. In the first F site, F(2) is bonded in a distorted trigonal planar geometry to one K(1), one K(2), and one U(1) atom. In the second F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent U(1) atoms. In the third F site, F(4) is bonded in a trigonal planar geometry to one K(2), one U(1), and one U(2) atom. In the fourth F site, F(1) is bonded in a distorted bent 150 degrees geometry to one K(1), one U(1), and one U(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2U3H4(O3F4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.326
_cell_length_b   8.326
_cell_length_c   13.351
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   118.302
_symmetry_Int_Tables_number   1
_cell_volume   814.974
_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  0.632  0.653  0.250  1.0
  K  K1  1  0.653  0.632  0.750  1.0
  K  K2  1  0.368  0.110  0.250  1.0
  K  K3  1  0.110  0.368  0.750  1.0
  U  U4  1  0.804  0.396  0.024  1.0
  U  U5  1  0.396  0.804  0.976  1.0
  U  U6  1  0.396  0.804  0.524  1.0
  U  U7  1  0.804  0.396  0.476  1.0
  U  U8  1  0.991  0.991  0.000  1.0
  U  U9  1  0.991  0.991  0.500  1.0
  H  H10  1  0.641  0.001  0.250  1.0
  H  H11  1  0.001  0.641  0.750  1.0
  H  H12  1  0.250  0.385  0.250  1.0
  H  H13  1  0.385  0.250  0.750  1.0
  H  H14  1  0.298  0.298  0.000  1.0
  H  H15  1  0.298  0.298  0.500  1.0
  H  H16  1  0.054  0.759  0.250  1.0
  H  H17  1  0.759  0.054  0.750  1.0
  O  O18  1  0.932  0.410  0.134  1.0
  O  O19  1  0.410  0.932  0.866  1.0
  O  O20  1  0.410  0.932  0.634  1.0
  O  O21  1  0.932  0.410  0.366  1.0
  O  O22  1  0.398  0.693  0.093  1.0
  O  O23  1  0.693  0.398  0.907  1.0
  O  O24  1  0.693  0.398  0.593  1.0
  O  O25  1  0.398  0.693  0.407  1.0
  O  O26  1  0.961  0.047  0.127  1.0
  O  O27  1  0.047  0.961  0.873  1.0
  O  O28  1  0.047  0.961  0.627  1.0
  O  O29  1  0.961  0.047  0.373  1.0
  F  F30  1  0.858  0.699  0.055  1.0
  F  F31  1  0.699  0.858  0.945  1.0
  F  F32  1  0.699  0.858  0.555  1.0
  F  F33  1  0.858  0.699  0.445  1.0
  F  F34  1  0.378  0.576  0.619  1.0
  F  F35  1  0.576  0.378  0.381  1.0
  F  F36  1  0.576  0.378  0.119  1.0
  F  F37  1  0.378  0.576  0.881  1.0
  F  F38  1  0.084  0.613  0.547  1.0
  F  F39  1  0.613  0.084  0.453  1.0
  F  F40  1  0.613  0.084  0.047  1.0
  F  F41  1  0.084  0.613  0.953  1.0
  F  F42  1  0.960  0.237  0.554  1.0
  F  F43  1  0.237  0.960  0.446  1.0
  F  F44  1  0.237  0.960  0.054  1.0
  F  F45  1  0.960  0.237  0.946  1.0
[/CIF]
.