The compound described by Ge7H7O18(H2O)3H5O2 crystallizes in the triclinic P1 space group. The structure consists of one molecular hydrogen;dihydrate molecule and three water molecules inside a Ge7H7O18 framework. In the Ge7H7O18 framework, there are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(2)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the second Ge site, Ge(2) is bonded to one O(10), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the third Ge site, Ge(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(2), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(14), one O(15), one O(16), one O(3), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(3)O6 octahedra. In the fifth Ge site, Ge(5) is bonded to one O(11), one O(14), one O(5), and one O(8) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-60°. In the sixth Ge site, Ge(6) is bonded to one O(12), one O(15), one O(6), and one O(9) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-61°. In the seventh Ge site, Ge(7) is bonded to one O(10), one O(13), one O(16), and one O(7) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-59°. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(10) atom. In the second H site, H(6) is bonded in a distorted linear geometry to one O(12) and one O(19) atom. In the third H site, H(7) is bonded in a single-bond geometry to one O(19) and one O(7) atom. In the fourth H site, H(8) is bonded in a distorted single-bond geometry to one O(19) and one O(22) atom. In the fifth H site, H(12) is bonded in a distorted single-bond geometry to one O(5) atom. In the sixth H site, H(14) is bonded in a single-bond geometry to one O(22) atom. In the seventh H site, H(15) is bonded in a single-bond geometry to one O(22) atom. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(3), and one Ge(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Ge(1), one Ge(2), and one Ge(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ge(1), one Ge(2), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(3), and one Ge(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ge(1), one Ge(5), and one H(12) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(6) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ge(1), one Ge(7), and one H(7) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(5) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(6) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(7), and one H(1) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one Ge(3), one Ge(6), and one H(6) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(7) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(5) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(7) atom. In the seventeenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one H(6), one H(7), and one H(8) atom. In the eighteenth O site, O(22) is bonded in a distorted water-like geometry to one H(14), one H(15), and one H(8) atom. is represented by the CIF card [CIF]
data_Ge7H18O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.714
_cell_length_b   7.833
_cell_length_c   7.837
_cell_angle_alpha   90.315
_cell_angle_beta   90.519
_cell_angle_gamma   92.896
_symmetry_Int_Tables_number   1
_cell_volume   472.889
_cell_formula_units_Z   1
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
  Ge  Ge0  1  0.841  0.874  0.130  1.0
  Ge  Ge1  1  0.131  0.136  0.117  1.0
  Ge  Ge2  1  0.845  0.134  0.854  1.0
  Ge  Ge3  1  0.110  0.859  0.849  1.0
  Ge  Ge4  1  0.989  0.488  0.997  1.0
  Ge  Ge5  1  0.480  0.990  0.995  1.0
  Ge  Ge6  1  0.976  0.000  0.500  1.0
  H  H7  1  0.084  0.274  0.408  1.0
  H  H8  1  0.106  0.573  0.480  1.0
  H  H9  1  0.961  0.473  0.589  1.0
  H  H10  1  0.483  0.616  0.965  1.0
  H  H11  1  0.372  0.453  0.031  1.0
  H  H12  1  0.552  0.013  0.652  1.0
  H  H13  1  0.633  0.956  0.461  1.0
  H  H14  1  0.441  0.871  0.508  1.0
  H  H15  1  0.710  0.636  0.713  1.0
  H  H16  1  0.737  0.699  0.527  1.0
  H  H17  1  0.653  0.380  0.410  1.0
  H  H18  1  0.762  0.542  0.197  1.0
  H  H19  1  0.558  0.312  0.242  1.0
  H  H20  1  0.445  0.609  0.440  1.0
  H  H21  1  0.361  0.712  0.294  1.0
  H  H22  1  0.411  0.445  0.809  1.0
  H  H23  1  0.335  0.257  0.704  1.0
  H  H24  1  0.237  0.421  0.643  1.0
  O  O25  1  0.864  0.873  0.879  1.0
  O  O26  1  0.862  0.119  0.102  1.0
  O  O27  1  0.090  0.893  0.131  1.0
  O  O28  1  0.107  0.113  0.873  1.0
  O  O29  1  0.860  0.615  0.144  1.0
  O  O30  1  0.602  0.843  0.112  1.0
  O  O31  1  0.819  0.885  0.372  1.0
  O  O32  1  0.143  0.375  0.116  1.0
  O  O33  1  0.373  0.132  0.130  1.0
  O  O34  1  0.108  0.154  0.371  1.0
  O  O35  1  0.846  0.368  0.865  1.0
  O  O36  1  0.603  0.099  0.834  1.0
  O  O37  1  0.855  0.138  0.619  1.0
  O  O38  1  0.103  0.627  0.864  1.0
  O  O39  1  0.346  0.857  0.866  1.0
  O  O40  1  0.107  0.865  0.611  1.0
  O  O41  1  0.066  0.459  0.520  1.0
  O  O42  1  0.467  0.491  0.952  1.0
  O  O43  1  0.523  0.977  0.526  1.0
  O  O44  1  0.685  0.605  0.595  1.0
  O  O45  1  0.616  0.413  0.296  1.0
  O  O46  1  0.358  0.694  0.417  1.0
  O  O47  1  0.353  0.380  0.682  1.0
[/CIF]
.
The compound described by Ge7H7O18(H2O)3H5O2 crystallizes in the triclinic P1 space group. The structure consists of one molecular hydrogen;dihydrate molecule and three water molecules inside a Ge7H7O18 framework. In the Ge7H7O18 framework, there are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(2)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the second Ge site, Ge(2) is bonded to one O(10), one O(2), one O(3), one O(4), one O(8), and one O(9) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the third Ge site, Ge(3) is bonded to one O(1), one O(11), one O(12), one O(13), one O(2), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(14), one O(15), one O(16), one O(3), and one O(4) atom to form GeO6 octahedra that share  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra,  a cornercorner with one Ge(7)O4 tetrahedra,  an edgeedge with one Ge(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, and  an edgeedge with one Ge(3)O6 octahedra. In the fifth Ge site, Ge(5) is bonded to one O(11), one O(14), one O(5), and one O(8) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 49-60°. In the sixth Ge site, Ge(6) is bonded to one O(12), one O(15), one O(6), and one O(9) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-61°. In the seventh Ge site, Ge(7) is bonded to one O(10), one O(13), one O(16), and one O(7) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles range from 56-59°. There are seven inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(10) atom. In the second H site, H(6) is bonded in a distorted linear geometry to one O(12) and one O(19) atom. In the third H site, H(7) is bonded in a single-bond geometry to one O(19) and one O(7) atom. In the fourth H site, H(8) is bonded in a distorted single-bond geometry to one O(19) and one O(22) atom. In the fifth H site, H(12) is bonded in a distorted single-bond geometry to one O(5) atom. In the sixth H site, H(14) is bonded in a single-bond geometry to one O(22) atom. In the seventh H site, H(15) is bonded in a single-bond geometry to one O(22) atom. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(3), and one Ge(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Ge(1), one Ge(2), and one Ge(3) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ge(1), one Ge(2), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(3), and one Ge(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Ge(1), one Ge(5), and one H(12) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(6) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ge(1), one Ge(7), and one H(7) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(5) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(6) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Ge(2), one Ge(7), and one H(1) atom. In the eleventh O site, O(11) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the twelfth O site, O(12) is bonded in a trigonal non-coplanar geometry to one Ge(3), one Ge(6), and one H(6) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(7) atom. In the fourteenth O site, O(14) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(5) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(7) atom. In the seventeenth O site, O(19) is bonded in a trigonal non-coplanar geometry to one H(6), one H(7), and one H(8) atom. In the eighteenth O site, O(22) is bonded in a distorted water-like geometry to one H(14), one H(15), and one H(8) atom. is represented by the CIF card [CIF]
data_Ge7H18O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.714
_cell_length_b   7.833
_cell_length_c   7.837
_cell_angle_alpha   90.315
_cell_angle_beta   90.519
_cell_angle_gamma   92.896
_symmetry_Int_Tables_number   1
_cell_volume   472.889
_cell_formula_units_Z   1
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
  Ge  Ge0  1  0.841  0.874  0.130  1.0
  Ge  Ge1  1  0.131  0.136  0.117  1.0
  Ge  Ge2  1  0.845  0.134  0.854  1.0
  Ge  Ge3  1  0.110  0.859  0.849  1.0
  Ge  Ge4  1  0.989  0.488  0.997  1.0
  Ge  Ge5  1  0.480  0.990  0.995  1.0
  Ge  Ge6  1  0.976  0.000  0.500  1.0
  H  H7  1  0.084  0.274  0.408  1.0
  H  H8  1  0.106  0.573  0.480  1.0
  H  H9  1  0.961  0.473  0.589  1.0
  H  H10  1  0.483  0.616  0.965  1.0
  H  H11  1  0.372  0.453  0.031  1.0
  H  H12  1  0.552  0.013  0.652  1.0
  H  H13  1  0.633  0.956  0.461  1.0
  H  H14  1  0.441  0.871  0.508  1.0
  H  H15  1  0.710  0.636  0.713  1.0
  H  H16  1  0.737  0.699  0.527  1.0
  H  H17  1  0.653  0.380  0.410  1.0
  H  H18  1  0.762  0.542  0.197  1.0
  H  H19  1  0.558  0.312  0.242  1.0
  H  H20  1  0.445  0.609  0.440  1.0
  H  H21  1  0.361  0.712  0.294  1.0
  H  H22  1  0.411  0.445  0.809  1.0
  H  H23  1  0.335  0.257  0.704  1.0
  H  H24  1  0.237  0.421  0.643  1.0
  O  O25  1  0.864  0.873  0.879  1.0
  O  O26  1  0.862  0.119  0.102  1.0
  O  O27  1  0.090  0.893  0.131  1.0
  O  O28  1  0.107  0.113  0.873  1.0
  O  O29  1  0.860  0.615  0.144  1.0
  O  O30  1  0.602  0.843  0.112  1.0
  O  O31  1  0.819  0.885  0.372  1.0
  O  O32  1  0.143  0.375  0.116  1.0
  O  O33  1  0.373  0.132  0.130  1.0
  O  O34  1  0.108  0.154  0.371  1.0
  O  O35  1  0.846  0.368  0.865  1.0
  O  O36  1  0.603  0.099  0.834  1.0
  O  O37  1  0.855  0.138  0.619  1.0
  O  O38  1  0.103  0.627  0.864  1.0
  O  O39  1  0.346  0.857  0.866  1.0
  O  O40  1  0.107  0.865  0.611  1.0
  O  O41  1  0.066  0.459  0.520  1.0
  O  O42  1  0.467  0.491  0.952  1.0
  O  O43  1  0.523  0.977  0.526  1.0
  O  O44  1  0.685  0.605  0.595  1.0
  O  O45  1  0.616  0.413  0.296  1.0
  O  O46  1  0.358  0.694  0.417  1.0
  O  O47  1  0.353  0.380  0.682  1.0
[/CIF]
.