The material structure described by NaH3(SeO3)2 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a distorted octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to two equivalent O(2) atoms. In the second H site, H(2) is bonded in a distorted linear geometry to one O(1) and one O(3) atom. Se(1) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one H(2), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one H(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), one H(2), and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaH3(SeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.959
_cell_length_b   4.690
_cell_length_c   11.224
_cell_angle_alpha   69.181
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   293.213
_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  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.000  0.500  1.0
  H  H2  1  0.500  0.000  0.000  1.0
  H  H3  1  0.527  0.801  0.308  1.0
  H  H4  1  0.027  0.199  0.192  1.0
  H  H5  1  0.000  0.000  0.500  1.0
  H  H6  1  0.973  0.801  0.808  1.0
  H  H7  1  0.473  0.199  0.692  1.0
  Se  Se8  1  0.092  0.698  0.344  1.0
  Se  Se9  1  0.592  0.302  0.156  1.0
  Se  Se10  1  0.408  0.698  0.844  1.0
  Se  Se11  1  0.908  0.302  0.656  1.0
  O  O12  1  0.655  0.467  0.651  1.0
  O  O13  1  0.632  0.152  0.035  1.0
  O  O14  1  0.146  0.034  0.201  1.0
  O  O15  1  0.646  0.966  0.299  1.0
  O  O16  1  0.132  0.848  0.465  1.0
  O  O17  1  0.155  0.533  0.849  1.0
  O  O18  1  0.845  0.467  0.151  1.0
  O  O19  1  0.868  0.152  0.535  1.0
  O  O20  1  0.354  0.034  0.701  1.0
  O  O21  1  0.854  0.966  0.799  1.0
  O  O22  1  0.368  0.848  0.965  1.0
  O  O23  1  0.345  0.533  0.349  1.0
[/CIF]
.
The material structure described by NaH3(SeO3)2 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a distorted octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to two equivalent O(2) atoms. In the second H site, H(2) is bonded in a distorted linear geometry to one O(1) and one O(3) atom. Se(1) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one H(2), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one H(1), and one Se(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1), one H(2), and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaH3(SeO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.959
_cell_length_b   4.690
_cell_length_c   11.224
_cell_angle_alpha   69.181
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   293.213
_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  0.000  0.000  0.000  1.0
  Na  Na1  1  0.500  0.000  0.500  1.0
  H  H2  1  0.500  0.000  0.000  1.0
  H  H3  1  0.527  0.801  0.308  1.0
  H  H4  1  0.027  0.199  0.192  1.0
  H  H5  1  0.000  0.000  0.500  1.0
  H  H6  1  0.973  0.801  0.808  1.0
  H  H7  1  0.473  0.199  0.692  1.0
  Se  Se8  1  0.092  0.698  0.344  1.0
  Se  Se9  1  0.592  0.302  0.156  1.0
  Se  Se10  1  0.408  0.698  0.844  1.0
  Se  Se11  1  0.908  0.302  0.656  1.0
  O  O12  1  0.655  0.467  0.651  1.0
  O  O13  1  0.632  0.152  0.035  1.0
  O  O14  1  0.146  0.034  0.201  1.0
  O  O15  1  0.646  0.966  0.299  1.0
  O  O16  1  0.132  0.848  0.465  1.0
  O  O17  1  0.155  0.533  0.849  1.0
  O  O18  1  0.845  0.467  0.151  1.0
  O  O19  1  0.868  0.152  0.535  1.0
  O  O20  1  0.354  0.034  0.701  1.0
  O  O21  1  0.854  0.966  0.799  1.0
  O  O22  1  0.368  0.848  0.965  1.0
  O  O23  1  0.345  0.533  0.349  1.0
[/CIF]
.