The material structure described by NiH10(SeO5)2 crystallizes in the monoclinic C2/c space group. Ni(1) is bonded in an octahedral geometry to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms. There are five inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(1) and one O(3) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(2) and one O(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(6) 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 six inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Ni(1) and two equivalent H(2) atoms. In the second O site, O(5) is bonded in a distorted trigonal planar geometry to one Ni(1) and two equivalent H(3) atoms. In the third O site, O(6) is bonded in a water-like geometry to one H(4) and one H(5) atom. In the fourth O site, O(1) is bonded in a trigonal planar geometry to one Ni(1), one H(1), and one Se(1) atom. In the fifth O site, O(2) is bonded in a trigonal planar geometry to one Ni(1), one H(4), and one Se(1) atom. In the sixth O site, O(3) is bonded in a distorted single-bond geometry to one H(1) and one Se(1) atom. is represented by the CIF file [CIF]
data_NiH10(SeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.215
_cell_length_b   8.215
_cell_length_c   10.971
_cell_angle_alpha   58.099
_cell_angle_beta   58.099
_cell_angle_gamma   55.895
_symmetry_Int_Tables_number   1
_cell_volume   491.211
_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
  Ni  Ni0  1  0.034  0.966  0.250  1.0
  Ni  Ni1  1  0.966  0.034  0.750  1.0
  H  H2  1  0.952  0.417  0.768  1.0
  H  H3  1  0.583  0.048  0.732  1.0
  H  H4  1  0.048  0.583  0.232  1.0
  H  H5  1  0.417  0.952  0.268  1.0
  H  H6  1  0.630  0.249  0.334  1.0
  H  H7  1  0.751  0.370  0.166  1.0
  H  H8  1  0.370  0.751  0.666  1.0
  H  H9  1  0.249  0.630  0.834  1.0
  H  H10  1  0.318  0.569  0.337  1.0
  H  H11  1  0.431  0.682  0.163  1.0
  H  H12  1  0.682  0.431  0.663  1.0
  H  H13  1  0.569  0.318  0.837  1.0
  H  H14  1  0.294  0.263  0.475  1.0
  H  H15  1  0.737  0.706  0.025  1.0
  H  H16  1  0.706  0.737  0.525  1.0
  H  H17  1  0.263  0.294  0.975  1.0
  H  H18  1  0.398  0.262  0.563  1.0
  H  H19  1  0.738  0.602  0.937  1.0
  H  H20  1  0.602  0.738  0.437  1.0
  H  H21  1  0.262  0.398  0.063  1.0
  Se  Se22  1  0.989  0.745  0.607  1.0
  Se  Se23  1  0.255  0.011  0.893  1.0
  Se  Se24  1  0.011  0.255  0.393  1.0
  Se  Se25  1  0.745  0.989  0.107  1.0
  O  O26  1  0.941  0.838  0.184  1.0
  O  O27  1  0.162  0.059  0.316  1.0
  O  O28  1  0.059  0.162  0.816  1.0
  O  O29  1  0.838  0.941  0.684  1.0
  O  O30  1  0.884  0.827  0.476  1.0
  O  O31  1  0.173  0.116  0.024  1.0
  O  O32  1  0.116  0.173  0.524  1.0
  O  O33  1  0.827  0.884  0.976  1.0
  O  O34  1  0.862  0.569  0.761  1.0
  O  O35  1  0.431  0.138  0.739  1.0
  O  O36  1  0.138  0.431  0.239  1.0
  O  O37  1  0.569  0.862  0.261  1.0
  O  O38  1  0.767  0.233  0.250  1.0
  O  O39  1  0.233  0.767  0.750  1.0
  O  O40  1  0.299  0.701  0.250  1.0
  O  O41  1  0.701  0.299  0.750  1.0
  O  O42  1  0.385  0.320  0.461  1.0
  O  O43  1  0.680  0.615  0.039  1.0
  O  O44  1  0.615  0.680  0.539  1.0
  O  O45  1  0.320  0.385  0.961  1.0
[/CIF]
.
The material structure described by NiH10(SeO5)2 crystallizes in the monoclinic C2/c space group. Ni(1) is bonded in an octahedral geometry to one O(4), one O(5), two equivalent O(1), and two equivalent O(2) atoms. There are five inequivalent H sites. In the first H site, H(1) is bonded in a distorted linear geometry to one O(1) and one O(3) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(2) and one O(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(6) 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 six inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to one Ni(1) and two equivalent H(2) atoms. In the second O site, O(5) is bonded in a distorted trigonal planar geometry to one Ni(1) and two equivalent H(3) atoms. In the third O site, O(6) is bonded in a water-like geometry to one H(4) and one H(5) atom. In the fourth O site, O(1) is bonded in a trigonal planar geometry to one Ni(1), one H(1), and one Se(1) atom. In the fifth O site, O(2) is bonded in a trigonal planar geometry to one Ni(1), one H(4), and one Se(1) atom. In the sixth O site, O(3) is bonded in a distorted single-bond geometry to one H(1) and one Se(1) atom. is represented by the CIF file [CIF]
data_NiH10(SeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.215
_cell_length_b   8.215
_cell_length_c   10.971
_cell_angle_alpha   58.099
_cell_angle_beta   58.099
_cell_angle_gamma   55.895
_symmetry_Int_Tables_number   1
_cell_volume   491.211
_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
  Ni  Ni0  1  0.034  0.966  0.250  1.0
  Ni  Ni1  1  0.966  0.034  0.750  1.0
  H  H2  1  0.952  0.417  0.768  1.0
  H  H3  1  0.583  0.048  0.732  1.0
  H  H4  1  0.048  0.583  0.232  1.0
  H  H5  1  0.417  0.952  0.268  1.0
  H  H6  1  0.630  0.249  0.334  1.0
  H  H7  1  0.751  0.370  0.166  1.0
  H  H8  1  0.370  0.751  0.666  1.0
  H  H9  1  0.249  0.630  0.834  1.0
  H  H10  1  0.318  0.569  0.337  1.0
  H  H11  1  0.431  0.682  0.163  1.0
  H  H12  1  0.682  0.431  0.663  1.0
  H  H13  1  0.569  0.318  0.837  1.0
  H  H14  1  0.294  0.263  0.475  1.0
  H  H15  1  0.737  0.706  0.025  1.0
  H  H16  1  0.706  0.737  0.525  1.0
  H  H17  1  0.263  0.294  0.975  1.0
  H  H18  1  0.398  0.262  0.563  1.0
  H  H19  1  0.738  0.602  0.937  1.0
  H  H20  1  0.602  0.738  0.437  1.0
  H  H21  1  0.262  0.398  0.063  1.0
  Se  Se22  1  0.989  0.745  0.607  1.0
  Se  Se23  1  0.255  0.011  0.893  1.0
  Se  Se24  1  0.011  0.255  0.393  1.0
  Se  Se25  1  0.745  0.989  0.107  1.0
  O  O26  1  0.941  0.838  0.184  1.0
  O  O27  1  0.162  0.059  0.316  1.0
  O  O28  1  0.059  0.162  0.816  1.0
  O  O29  1  0.838  0.941  0.684  1.0
  O  O30  1  0.884  0.827  0.476  1.0
  O  O31  1  0.173  0.116  0.024  1.0
  O  O32  1  0.116  0.173  0.524  1.0
  O  O33  1  0.827  0.884  0.976  1.0
  O  O34  1  0.862  0.569  0.761  1.0
  O  O35  1  0.431  0.138  0.739  1.0
  O  O36  1  0.138  0.431  0.239  1.0
  O  O37  1  0.569  0.862  0.261  1.0
  O  O38  1  0.767  0.233  0.250  1.0
  O  O39  1  0.233  0.767  0.750  1.0
  O  O40  1  0.299  0.701  0.250  1.0
  O  O41  1  0.701  0.299  0.750  1.0
  O  O42  1  0.385  0.320  0.461  1.0
  O  O43  1  0.680  0.615  0.039  1.0
  O  O44  1  0.615  0.680  0.539  1.0
  O  O45  1  0.320  0.385  0.961  1.0
[/CIF]
.