The compound described by Na4PuH7O9 crystallizes in the triclinic P-1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Na(3)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, and edges with three equivalent Pu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one H(2), one O(1), one O(2), one O(3), one O(8), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded to one O(2), one O(3), one O(8), one O(9), and two equivalent O(6) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  an edgeedge with one Na(3)O6 octahedra, and edges with two equivalent Pu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. In the fourth Na site, Na(4) is bonded in a 8-coordinate geometry to one H(1), one H(3), one O(3), one O(4), one O(5), one O(9), and two equivalent O(7) atoms. Pu(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form PuO6 octahedra that share edges with two equivalent Na(3)O6 octahedra and edges with three equivalent Na(1)O6 octahedra. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Na(4) and one O(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one Na(2) and one O(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one Na(4) and one O(7) atom. In the fourth H site, H(4) is bonded in a linear geometry to one O(7) and one O(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(9) atom. In the seventh H site, H(7) is bonded in a distorted single-bond geometry to one O(7) and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one Pu(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Na(2), one Na(3), and one Pu(1) atom. In the third O site, O(3) is bonded in a distorted trigonal bipyramidal geometry to one Na(1), one Na(2), one Na(3), one Na(4), and one Pu(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(4), two equivalent Na(1), and one Pu(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Na(4), two equivalent Na(1), one Pu(1), and one H(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to two equivalent Na(2), two equivalent Na(3), one Pu(1), and one H(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Na(4), one H(3), one H(4), and one H(7) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Na(2), one Na(3), one H(4), and one H(5) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Na(3), one Na(4), one H(6), and one H(7) atom. is represented by the CIF file [CIF]
data_Na4PuH7O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.045
_cell_length_b   8.168
_cell_length_c   11.033
_cell_angle_alpha   104.485
_cell_angle_beta   101.587
_cell_angle_gamma   105.609
_symmetry_Int_Tables_number   1
_cell_volume   486.586
_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  0.792  0.536  0.585  1.0
  Na  Na1  1  0.208  0.464  0.415  1.0
  Na  Na2  1  0.943  0.658  0.923  1.0
  Na  Na3  1  0.057  0.342  0.077  1.0
  Na  Na4  1  0.477  0.281  0.907  1.0
  Na  Na5  1  0.523  0.719  0.093  1.0
  Na  Na6  1  0.385  0.150  0.577  1.0
  Na  Na7  1  0.615  0.850  0.423  1.0
  Pu  Pu8  1  0.365  0.587  0.751  1.0
  Pu  Pu9  1  0.635  0.413  0.249  1.0
  H  H10  1  0.569  0.823  0.628  1.0
  H  H11  1  0.431  0.177  0.372  1.0
  H  H12  1  0.083  0.360  0.850  1.0
  H  H13  1  0.917  0.640  0.150  1.0
  H  H14  1  0.840  0.179  0.621  1.0
  H  H15  1  0.160  0.821  0.379  1.0
  H  H16  1  0.758  0.112  0.789  1.0
  H  H17  1  0.242  0.888  0.211  1.0
  H  H18  1  0.708  0.016  0.895  1.0
  H  H19  1  0.292  0.984  0.105  1.0
  H  H20  1  0.177  0.931  0.731  1.0
  H  H21  1  0.823  0.069  0.269  1.0
  H  H22  1  0.013  0.044  0.690  1.0
  H  H23  1  0.987  0.956  0.310  1.0
  O  O24  1  0.151  0.722  0.758  1.0
  O  O25  1  0.849  0.278  0.242  1.0
  O  O26  1  0.606  0.775  0.894  1.0
  O  O27  1  0.394  0.225  0.106  1.0
  O  O28  1  0.578  0.449  0.747  1.0
  O  O29  1  0.422  0.551  0.253  1.0
  O  O30  1  0.123  0.396  0.612  1.0
  O  O31  1  0.877  0.604  0.388  1.0
  O  O32  1  0.506  0.692  0.595  1.0
  O  O33  1  0.494  0.308  0.405  1.0
  O  O34  1  0.215  0.469  0.904  1.0
  O  O35  1  0.785  0.531  0.096  1.0
  O  O36  1  0.755  0.074  0.641  1.0
  O  O37  1  0.245  0.926  0.359  1.0
  O  O38  1  0.762  0.136  0.886  1.0
  O  O39  1  0.238  0.864  0.114  1.0
  O  O40  1  0.186  0.047  0.717  1.0
  O  O41  1  0.814  0.953  0.283  1.0
[/CIF]
.
The compound described by Na4PuH7O9 crystallizes in the triclinic P-1 space group. There are four inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), two equivalent O(4), and two equivalent O(5) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Na(3)O6 octahedra, edges with two equivalent Na(1)O6 octahedra, and edges with three equivalent Pu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one H(2), one O(1), one O(2), one O(3), one O(8), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded to one O(2), one O(3), one O(8), one O(9), and two equivalent O(6) atoms to form distorted NaO6 octahedra that share  a cornercorner with one Na(1)O6 octahedra,  an edgeedge with one Na(3)O6 octahedra, and edges with two equivalent Pu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 24°. In the fourth Na site, Na(4) is bonded in a 8-coordinate geometry to one H(1), one H(3), one O(3), one O(4), one O(5), one O(9), and two equivalent O(7) atoms. Pu(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form PuO6 octahedra that share edges with two equivalent Na(3)O6 octahedra and edges with three equivalent Na(1)O6 octahedra. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Na(4) and one O(5) atom. In the second H site, H(2) is bonded in a single-bond geometry to one Na(2) and one O(6) atom. In the third H site, H(3) is bonded in a single-bond geometry to one Na(4) and one O(7) atom. In the fourth H site, H(4) is bonded in a linear geometry to one O(7) and one O(8) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(8) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(9) atom. In the seventh H site, H(7) is bonded in a distorted single-bond geometry to one O(7) and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one Pu(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Na(2), one Na(3), and one Pu(1) atom. In the third O site, O(3) is bonded in a distorted trigonal bipyramidal geometry to one Na(1), one Na(2), one Na(3), one Na(4), and one Pu(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(4), two equivalent Na(1), and one Pu(1) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Na(4), two equivalent Na(1), one Pu(1), and one H(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to two equivalent Na(2), two equivalent Na(3), one Pu(1), and one H(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent Na(4), one H(3), one H(4), and one H(7) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Na(2), one Na(3), one H(4), and one H(5) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Na(3), one Na(4), one H(6), and one H(7) atom. is represented by the CIF file [CIF]
data_Na4PuH7O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.045
_cell_length_b   8.168
_cell_length_c   11.033
_cell_angle_alpha   104.485
_cell_angle_beta   101.587
_cell_angle_gamma   105.609
_symmetry_Int_Tables_number   1
_cell_volume   486.586
_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  0.792  0.536  0.585  1.0
  Na  Na1  1  0.208  0.464  0.415  1.0
  Na  Na2  1  0.943  0.658  0.923  1.0
  Na  Na3  1  0.057  0.342  0.077  1.0
  Na  Na4  1  0.477  0.281  0.907  1.0
  Na  Na5  1  0.523  0.719  0.093  1.0
  Na  Na6  1  0.385  0.150  0.577  1.0
  Na  Na7  1  0.615  0.850  0.423  1.0
  Pu  Pu8  1  0.365  0.587  0.751  1.0
  Pu  Pu9  1  0.635  0.413  0.249  1.0
  H  H10  1  0.569  0.823  0.628  1.0
  H  H11  1  0.431  0.177  0.372  1.0
  H  H12  1  0.083  0.360  0.850  1.0
  H  H13  1  0.917  0.640  0.150  1.0
  H  H14  1  0.840  0.179  0.621  1.0
  H  H15  1  0.160  0.821  0.379  1.0
  H  H16  1  0.758  0.112  0.789  1.0
  H  H17  1  0.242  0.888  0.211  1.0
  H  H18  1  0.708  0.016  0.895  1.0
  H  H19  1  0.292  0.984  0.105  1.0
  H  H20  1  0.177  0.931  0.731  1.0
  H  H21  1  0.823  0.069  0.269  1.0
  H  H22  1  0.013  0.044  0.690  1.0
  H  H23  1  0.987  0.956  0.310  1.0
  O  O24  1  0.151  0.722  0.758  1.0
  O  O25  1  0.849  0.278  0.242  1.0
  O  O26  1  0.606  0.775  0.894  1.0
  O  O27  1  0.394  0.225  0.106  1.0
  O  O28  1  0.578  0.449  0.747  1.0
  O  O29  1  0.422  0.551  0.253  1.0
  O  O30  1  0.123  0.396  0.612  1.0
  O  O31  1  0.877  0.604  0.388  1.0
  O  O32  1  0.506  0.692  0.595  1.0
  O  O33  1  0.494  0.308  0.405  1.0
  O  O34  1  0.215  0.469  0.904  1.0
  O  O35  1  0.785  0.531  0.096  1.0
  O  O36  1  0.755  0.074  0.641  1.0
  O  O37  1  0.245  0.926  0.359  1.0
  O  O38  1  0.762  0.136  0.886  1.0
  O  O39  1  0.238  0.864  0.114  1.0
  O  O40  1  0.186  0.047  0.717  1.0
  O  O41  1  0.814  0.953  0.283  1.0
[/CIF]
.