The compound described by PdH2(S2O7)2 crystallizes in the monoclinic P2_1/c space group. Pd(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form PdO6 octahedra that share corners with two equivalent S(2)O4 tetrahedra and corners with four equivalent S(1)O4 tetrahedra. H(1) is bonded in a distorted single-bond geometry to one O(2) and one O(4) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form SO4 tetrahedra that share corners with two equivalent Pd(1)O6 octahedra and  a cornercorner with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 42-45°. In the second S site, S(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form SO4 tetrahedra that share  a cornercorner with one Pd(1)O6 octahedra and  a cornercorner with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Pd(1) and one S(2) atom. In the second O site, O(7) is bonded in a bent 120 degrees geometry to one S(1) and one S(2) atom. In the third O site, O(1) is bonded in a 2-coordinate geometry to one Pd(1) and one S(1) atom. In the fourth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one H(1) and one S(1) atom. In the fifth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Pd(1) and one S(1) atom. In the sixth O site, O(4) is bonded in a bent 120 degrees geometry to one H(1) and one S(2) atom. In the seventh O site, O(5) is bonded in a single-bond geometry to one S(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_H2Pd(S2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.014
_cell_length_b   9.525
_cell_length_c   9.551
_cell_angle_alpha   62.022
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   563.490
_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
  H  H0  1  0.291  0.942  0.462  1.0
  H  H1  1  0.791  0.558  0.538  1.0
  H  H2  1  0.709  0.058  0.538  1.0
  H  H3  1  0.209  0.442  0.462  1.0
  Pd  Pd4  1  0.000  0.000  0.000  1.0
  Pd  Pd5  1  0.500  0.500  0.000  1.0
  S  S6  1  0.678  0.116  0.200  1.0
  S  S7  1  0.178  0.384  0.800  1.0
  S  S8  1  0.322  0.884  0.800  1.0
  S  S9  1  0.822  0.616  0.200  1.0
  S  S10  1  0.362  0.891  0.272  1.0
  S  S11  1  0.862  0.609  0.728  1.0
  S  S12  1  0.638  0.109  0.728  1.0
  S  S13  1  0.138  0.391  0.272  1.0
  O  O14  1  0.844  0.026  0.193  1.0
  O  O15  1  0.344  0.474  0.807  1.0
  O  O16  1  0.156  0.974  0.807  1.0
  O  O17  1  0.656  0.526  0.193  1.0
  O  O18  1  0.632  0.093  0.356  1.0
  O  O19  1  0.132  0.407  0.644  1.0
  O  O20  1  0.368  0.907  0.644  1.0
  O  O21  1  0.868  0.593  0.356  1.0
  O  O22  1  0.672  0.278  0.070  1.0
  O  O23  1  0.172  0.222  0.930  1.0
  O  O24  1  0.328  0.722  0.930  1.0
  O  O25  1  0.828  0.778  0.070  1.0
  O  O26  1  0.241  0.966  0.354  1.0
  O  O27  1  0.741  0.534  0.646  1.0
  O  O28  1  0.759  0.034  0.646  1.0
  O  O29  1  0.259  0.466  0.354  1.0
  O  O30  1  0.478  0.763  0.379  1.0
  O  O31  1  0.978  0.737  0.621  1.0
  O  O32  1  0.522  0.237  0.621  1.0
  O  O33  1  0.022  0.263  0.379  1.0
  O  O34  1  0.235  0.863  0.168  1.0
  O  O35  1  0.735  0.637  0.832  1.0
  O  O36  1  0.765  0.137  0.832  1.0
  O  O37  1  0.265  0.363  0.168  1.0
  O  O38  1  0.490  0.037  0.147  1.0
  O  O39  1  0.990  0.463  0.853  1.0
  O  O40  1  0.510  0.963  0.853  1.0
  O  O41  1  0.010  0.537  0.147  1.0
[/CIF]
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The compound described by PdH2(S2O7)2 crystallizes in the monoclinic P2_1/c space group. Pd(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form PdO6 octahedra that share corners with two equivalent S(2)O4 tetrahedra and corners with four equivalent S(1)O4 tetrahedra. H(1) is bonded in a distorted single-bond geometry to one O(2) and one O(4) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(1), one O(2), one O(3), and one O(7) atom to form SO4 tetrahedra that share corners with two equivalent Pd(1)O6 octahedra and  a cornercorner with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 42-45°. In the second S site, S(2) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form SO4 tetrahedra that share  a cornercorner with one Pd(1)O6 octahedra and  a cornercorner with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Pd(1) and one S(2) atom. In the second O site, O(7) is bonded in a bent 120 degrees geometry to one S(1) and one S(2) atom. In the third O site, O(1) is bonded in a 2-coordinate geometry to one Pd(1) and one S(1) atom. In the fourth O site, O(2) is bonded in a distorted bent 150 degrees geometry to one H(1) and one S(1) atom. In the fifth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Pd(1) and one S(1) atom. In the sixth O site, O(4) is bonded in a bent 120 degrees geometry to one H(1) and one S(2) atom. In the seventh O site, O(5) is bonded in a single-bond geometry to one S(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_H2Pd(S2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.014
_cell_length_b   9.525
_cell_length_c   9.551
_cell_angle_alpha   62.022
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   563.490
_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
  H  H0  1  0.291  0.942  0.462  1.0
  H  H1  1  0.791  0.558  0.538  1.0
  H  H2  1  0.709  0.058  0.538  1.0
  H  H3  1  0.209  0.442  0.462  1.0
  Pd  Pd4  1  0.000  0.000  0.000  1.0
  Pd  Pd5  1  0.500  0.500  0.000  1.0
  S  S6  1  0.678  0.116  0.200  1.0
  S  S7  1  0.178  0.384  0.800  1.0
  S  S8  1  0.322  0.884  0.800  1.0
  S  S9  1  0.822  0.616  0.200  1.0
  S  S10  1  0.362  0.891  0.272  1.0
  S  S11  1  0.862  0.609  0.728  1.0
  S  S12  1  0.638  0.109  0.728  1.0
  S  S13  1  0.138  0.391  0.272  1.0
  O  O14  1  0.844  0.026  0.193  1.0
  O  O15  1  0.344  0.474  0.807  1.0
  O  O16  1  0.156  0.974  0.807  1.0
  O  O17  1  0.656  0.526  0.193  1.0
  O  O18  1  0.632  0.093  0.356  1.0
  O  O19  1  0.132  0.407  0.644  1.0
  O  O20  1  0.368  0.907  0.644  1.0
  O  O21  1  0.868  0.593  0.356  1.0
  O  O22  1  0.672  0.278  0.070  1.0
  O  O23  1  0.172  0.222  0.930  1.0
  O  O24  1  0.328  0.722  0.930  1.0
  O  O25  1  0.828  0.778  0.070  1.0
  O  O26  1  0.241  0.966  0.354  1.0
  O  O27  1  0.741  0.534  0.646  1.0
  O  O28  1  0.759  0.034  0.646  1.0
  O  O29  1  0.259  0.466  0.354  1.0
  O  O30  1  0.478  0.763  0.379  1.0
  O  O31  1  0.978  0.737  0.621  1.0
  O  O32  1  0.522  0.237  0.621  1.0
  O  O33  1  0.022  0.263  0.379  1.0
  O  O34  1  0.235  0.863  0.168  1.0
  O  O35  1  0.735  0.637  0.832  1.0
  O  O36  1  0.765  0.137  0.832  1.0
  O  O37  1  0.265  0.363  0.168  1.0
  O  O38  1  0.490  0.037  0.147  1.0
  O  O39  1  0.990  0.463  0.853  1.0
  O  O40  1  0.510  0.963  0.853  1.0
  O  O41  1  0.010  0.537  0.147  1.0
[/CIF]
.