The crystal structure described by K4Mo2H6S2O9 crystallizes in the monoclinic C2/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one S(1), one O(3), one O(4), one O(5), and two equivalent O(1) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to two equivalent S(1), one O(1), one O(3), one O(4), and two equivalent O(2) atoms. Mo(1) is bonded in a tetrahedral geometry to one S(1), one O(1), one O(2), and one O(3) atom. There are three inequivalent H sites. In the first H site, H(3) is bonded in a single-bond geometry to one O(5) atom. In the second H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the third H site, H(2) is bonded in a single-bond geometry to one O(4) atom. S(1) is bonded in a 1-coordinate geometry to one K(1), two equivalent K(2), and one Mo(1) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 1-coordinate geometry to one K(1), one K(2), and one Mo(1) atom. In the second O site, O(4) is bonded in a distorted water-like geometry to one K(1), one K(2), one H(1), and one H(2) atom. In the third O site, O(5) is bonded in a distorted water-like geometry to two equivalent K(1) and two equivalent H(3) atoms. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to two equivalent K(2) and one Mo(1) atom. In the fifth O site, O(1) is bonded in a 4-coordinate geometry to one K(2), two equivalent K(1), and one Mo(1) atom. is represented by the CIF file [CIF]
data_K4Mo2H6S2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.578
_cell_length_b   6.578
_cell_length_c   19.033
_cell_angle_alpha   82.890
_cell_angle_beta   82.890
_cell_angle_gamma   80.167
_symmetry_Int_Tables_number   1
_cell_volume   800.870
_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  0.194  0.223  0.715  1.0
  K  K1  1  0.777  0.806  0.785  1.0
  K  K2  1  0.806  0.777  0.285  1.0
  K  K3  1  0.223  0.194  0.215  1.0
  K  K4  1  0.130  0.738  0.560  1.0
  K  K5  1  0.262  0.870  0.940  1.0
  K  K6  1  0.870  0.262  0.440  1.0
  K  K7  1  0.738  0.130  0.060  1.0
  Mo  Mo8  1  0.692  0.459  0.621  1.0
  Mo  Mo9  1  0.541  0.308  0.879  1.0
  Mo  Mo10  1  0.308  0.541  0.379  1.0
  Mo  Mo11  1  0.459  0.692  0.121  1.0
  H  H12  1  0.799  0.707  0.966  1.0
  H  H13  1  0.293  0.201  0.534  1.0
  H  H14  1  0.201  0.293  0.034  1.0
  H  H15  1  0.707  0.799  0.466  1.0
  H  H16  1  0.936  0.538  0.923  1.0
  H  H17  1  0.462  0.064  0.577  1.0
  H  H18  1  0.064  0.462  0.077  1.0
  H  H19  1  0.538  0.936  0.423  1.0
  H  H20  1  0.289  0.726  0.790  1.0
  H  H21  1  0.274  0.711  0.710  1.0
  H  H22  1  0.711  0.274  0.210  1.0
  H  H23  1  0.726  0.289  0.290  1.0
  S  S24  1  0.110  0.764  0.124  1.0
  S  S25  1  0.236  0.890  0.376  1.0
  S  S26  1  0.890  0.236  0.876  1.0
  S  S27  1  0.764  0.110  0.624  1.0
  O  O28  1  0.857  0.543  0.675  1.0
  O  O29  1  0.457  0.143  0.825  1.0
  O  O30  1  0.143  0.457  0.325  1.0
  O  O31  1  0.543  0.857  0.175  1.0
  O  O32  1  0.750  0.571  0.532  1.0
  O  O33  1  0.429  0.250  0.968  1.0
  O  O34  1  0.250  0.429  0.468  1.0
  O  O35  1  0.571  0.750  0.032  1.0
  O  O36  1  0.423  0.538  0.650  1.0
  O  O37  1  0.462  0.577  0.850  1.0
  O  O38  1  0.577  0.462  0.350  1.0
  O  O39  1  0.538  0.423  0.150  1.0
  O  O40  1  0.920  0.686  0.930  1.0
  O  O41  1  0.314  0.080  0.570  1.0
  O  O42  1  0.080  0.314  0.070  1.0
  O  O43  1  0.686  0.920  0.430  1.0
  O  O44  1  0.207  0.793  0.750  1.0
  O  O45  1  0.793  0.207  0.250  1.0
[/CIF]
.
The crystal structure described by K4Mo2H6S2O9 crystallizes in the monoclinic C2/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one S(1), one O(3), one O(4), one O(5), and two equivalent O(1) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to two equivalent S(1), one O(1), one O(3), one O(4), and two equivalent O(2) atoms. Mo(1) is bonded in a tetrahedral geometry to one S(1), one O(1), one O(2), and one O(3) atom. There are three inequivalent H sites. In the first H site, H(3) is bonded in a single-bond geometry to one O(5) atom. In the second H site, H(1) is bonded in a single-bond geometry to one O(4) atom. In the third H site, H(2) is bonded in a single-bond geometry to one O(4) atom. S(1) is bonded in a 1-coordinate geometry to one K(1), two equivalent K(2), and one Mo(1) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a 1-coordinate geometry to one K(1), one K(2), and one Mo(1) atom. In the second O site, O(4) is bonded in a distorted water-like geometry to one K(1), one K(2), one H(1), and one H(2) atom. In the third O site, O(5) is bonded in a distorted water-like geometry to two equivalent K(1) and two equivalent H(3) atoms. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to two equivalent K(2) and one Mo(1) atom. In the fifth O site, O(1) is bonded in a 4-coordinate geometry to one K(2), two equivalent K(1), and one Mo(1) atom. is represented by the CIF file [CIF]
data_K4Mo2H6S2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.578
_cell_length_b   6.578
_cell_length_c   19.033
_cell_angle_alpha   82.890
_cell_angle_beta   82.890
_cell_angle_gamma   80.167
_symmetry_Int_Tables_number   1
_cell_volume   800.870
_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  0.194  0.223  0.715  1.0
  K  K1  1  0.777  0.806  0.785  1.0
  K  K2  1  0.806  0.777  0.285  1.0
  K  K3  1  0.223  0.194  0.215  1.0
  K  K4  1  0.130  0.738  0.560  1.0
  K  K5  1  0.262  0.870  0.940  1.0
  K  K6  1  0.870  0.262  0.440  1.0
  K  K7  1  0.738  0.130  0.060  1.0
  Mo  Mo8  1  0.692  0.459  0.621  1.0
  Mo  Mo9  1  0.541  0.308  0.879  1.0
  Mo  Mo10  1  0.308  0.541  0.379  1.0
  Mo  Mo11  1  0.459  0.692  0.121  1.0
  H  H12  1  0.799  0.707  0.966  1.0
  H  H13  1  0.293  0.201  0.534  1.0
  H  H14  1  0.201  0.293  0.034  1.0
  H  H15  1  0.707  0.799  0.466  1.0
  H  H16  1  0.936  0.538  0.923  1.0
  H  H17  1  0.462  0.064  0.577  1.0
  H  H18  1  0.064  0.462  0.077  1.0
  H  H19  1  0.538  0.936  0.423  1.0
  H  H20  1  0.289  0.726  0.790  1.0
  H  H21  1  0.274  0.711  0.710  1.0
  H  H22  1  0.711  0.274  0.210  1.0
  H  H23  1  0.726  0.289  0.290  1.0
  S  S24  1  0.110  0.764  0.124  1.0
  S  S25  1  0.236  0.890  0.376  1.0
  S  S26  1  0.890  0.236  0.876  1.0
  S  S27  1  0.764  0.110  0.624  1.0
  O  O28  1  0.857  0.543  0.675  1.0
  O  O29  1  0.457  0.143  0.825  1.0
  O  O30  1  0.143  0.457  0.325  1.0
  O  O31  1  0.543  0.857  0.175  1.0
  O  O32  1  0.750  0.571  0.532  1.0
  O  O33  1  0.429  0.250  0.968  1.0
  O  O34  1  0.250  0.429  0.468  1.0
  O  O35  1  0.571  0.750  0.032  1.0
  O  O36  1  0.423  0.538  0.650  1.0
  O  O37  1  0.462  0.577  0.850  1.0
  O  O38  1  0.577  0.462  0.350  1.0
  O  O39  1  0.538  0.423  0.150  1.0
  O  O40  1  0.920  0.686  0.930  1.0
  O  O41  1  0.314  0.080  0.570  1.0
  O  O42  1  0.080  0.314  0.070  1.0
  O  O43  1  0.686  0.920  0.430  1.0
  O  O44  1  0.207  0.793  0.750  1.0
  O  O45  1  0.793  0.207  0.250  1.0
[/CIF]
.