The crystal structure described by Ge7(H4O9)2(H2O)5 crystallizes in the triclinic P1 space group. The structure consists of five water molecules inside a Ge7(H4O9)2 framework. In the Ge7(H4O9)2 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(2)O4 tetrahedra,  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(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(3), one O(8), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra, and  a cornercorner with one Ge(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 63°. 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, 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(2)O4 tetrahedra,  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, 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 GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-60°. 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 GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-61°. 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 GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-59°. There are eight inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one O(2) atom. In the second H site, H(4) is bonded in a linear geometry to one O(17) and one O(5) atom. In the third H site, H(7) is bonded in a linear geometry to one O(13) and one O(19) atom. In the fourth H site, H(8) is bonded in a single-bond geometry to one O(15) atom. In the fifth H site, H(9) is bonded in a single-bond geometry to one O(17) atom. In the sixth H site, H(10) is bonded in a single-bond geometry to one O(17) atom. In the seventh H site, H(13) is bonded in a single-bond geometry to one O(19) atom. In the eighth H site, H(14) is bonded in a single-bond geometry to one O(19) 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 single-bond geometry to one Ge(1), one Ge(3), and one H(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(2), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Ge(3) and one Ge(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(5), and one H(4) 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 distorted bent 120 degrees geometry to one Ge(1) and one Ge(7) atom. In the eighth O site, O(8) is bonded in a bent 150 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 bent 120 degrees geometry to one Ge(2) and one Ge(7) 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 bent 120 degrees geometry to one Ge(3) and one Ge(6) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Ge(3), one Ge(7), and one H(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 3-coordinate geometry to one Ge(4), one Ge(6), and one H(8) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Ge(4) and one Ge(7) atom. In the seventeenth O site, O(17) is bonded in a trigonal non-coplanar geometry to one H(10), one H(4), and one H(9) atom. In the eighteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one H(13), one H(14), and one H(7) atom. is represented by the CIF card [CIF]
data_Ge7H18O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.567
_cell_length_b   8.031
_cell_length_c   8.064
_cell_angle_alpha   89.080
_cell_angle_beta   88.687
_cell_angle_gamma   89.385
_symmetry_Int_Tables_number   1
_cell_volume   489.868
_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  0.144  0.130  0.144  1.0
  Ge  Ge1  1  0.890  0.178  0.807  1.0
  Ge  Ge2  1  0.868  0.851  0.146  1.0
  Ge  Ge3  1  0.149  0.853  0.884  1.0
  Ge  Ge4  1  0.523  0.991  0.987  1.0
  Ge  Ge5  1  0.014  0.986  0.482  1.0
  Ge  Ge6  1  0.022  0.495  0.001  1.0
  H  H7  1  0.274  0.746  0.281  1.0
  H  H8  1  0.802  0.158  0.090  1.0
  H  H9  1  0.764  0.723  0.764  1.0
  H  H10  1  0.426  0.283  0.042  1.0
  H  H11  1  0.299  0.286  0.517  1.0
  H  H12  1  0.730  0.381  0.424  1.0
  H  H13  1  0.924  0.567  0.287  1.0
  H  H14  1  0.219  0.783  0.569  1.0
  H  H15  1  0.378  0.511  0.946  1.0
  H  H16  1  0.568  0.436  0.900  1.0
  H  H17  1  0.538  0.923  0.397  1.0
  H  H18  1  0.589  0.044  0.535  1.0
  H  H19  1  0.034  0.463  0.511  1.0
  H  H20  1  0.858  0.577  0.543  1.0
  H  H21  1  0.396  0.613  0.370  1.0
  H  H22  1  0.674  0.240  0.313  1.0
  H  H23  1  0.257  0.263  0.703  1.0
  H  H24  1  0.630  0.758  0.623  1.0
  O  O25  1  0.146  0.896  0.119  1.0
  O  O26  1  0.883  0.101  0.168  1.0
  O  O27  1  0.100  0.107  0.881  1.0
  O  O28  1  0.903  0.834  0.916  1.0
  O  O29  1  0.392  0.153  0.090  1.0
  O  O30  1  0.167  0.107  0.369  1.0
  O  O31  1  0.127  0.354  0.133  1.0
  O  O32  1  0.677  0.137  0.898  1.0
  O  O33  1  0.870  0.116  0.601  1.0
  O  O34  1  0.886  0.396  0.855  1.0
  O  O35  1  0.624  0.865  0.139  1.0
  O  O36  1  0.887  0.847  0.372  1.0
  O  O37  1  0.899  0.610  0.162  1.0
  O  O38  1  0.388  0.889  0.851  1.0
  O  O39  1  0.129  0.852  0.634  1.0
  O  O40  1  0.183  0.622  0.902  1.0
  O  O41  1  0.474  0.435  0.985  1.0
  O  O42  1  0.522  0.943  0.516  1.0
  O  O43  1  0.923  0.504  0.461  1.0
  O  O44  1  0.290  0.683  0.385  1.0
  O  O45  1  0.623  0.328  0.382  1.0
  O  O46  1  0.252  0.346  0.613  1.0
  O  O47  1  0.701  0.668  0.675  1.0
[/CIF]
.
The crystal structure described by Ge7(H4O9)2(H2O)5 crystallizes in the triclinic P1 space group. The structure consists of five water molecules inside a Ge7(H4O9)2 framework. In the Ge7(H4O9)2 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(2)O4 tetrahedra,  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(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(3), one O(8), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra,  a cornercorner with one Ge(6)O4 tetrahedra, and  a cornercorner with one Ge(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 63°. 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, 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(2)O4 tetrahedra,  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, 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 GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-60°. 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 GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-61°. 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 GeO4 tetrahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra,  a cornercorner with one Ge(4)O6 octahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-59°. There are eight inequivalent H sites. In the first H site, H(2) is bonded in a single-bond geometry to one O(2) atom. In the second H site, H(4) is bonded in a linear geometry to one O(17) and one O(5) atom. In the third H site, H(7) is bonded in a linear geometry to one O(13) and one O(19) atom. In the fourth H site, H(8) is bonded in a single-bond geometry to one O(15) atom. In the fifth H site, H(9) is bonded in a single-bond geometry to one O(17) atom. In the sixth H site, H(10) is bonded in a single-bond geometry to one O(17) atom. In the seventh H site, H(13) is bonded in a single-bond geometry to one O(19) atom. In the eighth H site, H(14) is bonded in a single-bond geometry to one O(19) 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 single-bond geometry to one Ge(1), one Ge(3), and one H(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(2), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Ge(3) and one Ge(4) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Ge(1), one Ge(5), and one H(4) 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 distorted bent 120 degrees geometry to one Ge(1) and one Ge(7) atom. In the eighth O site, O(8) is bonded in a bent 150 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 bent 120 degrees geometry to one Ge(2) and one Ge(7) 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 bent 120 degrees geometry to one Ge(3) and one Ge(6) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal non-coplanar geometry to one Ge(3), one Ge(7), and one H(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 3-coordinate geometry to one Ge(4), one Ge(6), and one H(8) atom. In the sixteenth O site, O(16) is bonded in a distorted bent 120 degrees geometry to one Ge(4) and one Ge(7) atom. In the seventeenth O site, O(17) is bonded in a trigonal non-coplanar geometry to one H(10), one H(4), and one H(9) atom. In the eighteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one H(13), one H(14), and one H(7) atom. is represented by the CIF card [CIF]
data_Ge7H18O23
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.567
_cell_length_b   8.031
_cell_length_c   8.064
_cell_angle_alpha   89.080
_cell_angle_beta   88.687
_cell_angle_gamma   89.385
_symmetry_Int_Tables_number   1
_cell_volume   489.868
_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  0.144  0.130  0.144  1.0
  Ge  Ge1  1  0.890  0.178  0.807  1.0
  Ge  Ge2  1  0.868  0.851  0.146  1.0
  Ge  Ge3  1  0.149  0.853  0.884  1.0
  Ge  Ge4  1  0.523  0.991  0.987  1.0
  Ge  Ge5  1  0.014  0.986  0.482  1.0
  Ge  Ge6  1  0.022  0.495  0.001  1.0
  H  H7  1  0.274  0.746  0.281  1.0
  H  H8  1  0.802  0.158  0.090  1.0
  H  H9  1  0.764  0.723  0.764  1.0
  H  H10  1  0.426  0.283  0.042  1.0
  H  H11  1  0.299  0.286  0.517  1.0
  H  H12  1  0.730  0.381  0.424  1.0
  H  H13  1  0.924  0.567  0.287  1.0
  H  H14  1  0.219  0.783  0.569  1.0
  H  H15  1  0.378  0.511  0.946  1.0
  H  H16  1  0.568  0.436  0.900  1.0
  H  H17  1  0.538  0.923  0.397  1.0
  H  H18  1  0.589  0.044  0.535  1.0
  H  H19  1  0.034  0.463  0.511  1.0
  H  H20  1  0.858  0.577  0.543  1.0
  H  H21  1  0.396  0.613  0.370  1.0
  H  H22  1  0.674  0.240  0.313  1.0
  H  H23  1  0.257  0.263  0.703  1.0
  H  H24  1  0.630  0.758  0.623  1.0
  O  O25  1  0.146  0.896  0.119  1.0
  O  O26  1  0.883  0.101  0.168  1.0
  O  O27  1  0.100  0.107  0.881  1.0
  O  O28  1  0.903  0.834  0.916  1.0
  O  O29  1  0.392  0.153  0.090  1.0
  O  O30  1  0.167  0.107  0.369  1.0
  O  O31  1  0.127  0.354  0.133  1.0
  O  O32  1  0.677  0.137  0.898  1.0
  O  O33  1  0.870  0.116  0.601  1.0
  O  O34  1  0.886  0.396  0.855  1.0
  O  O35  1  0.624  0.865  0.139  1.0
  O  O36  1  0.887  0.847  0.372  1.0
  O  O37  1  0.899  0.610  0.162  1.0
  O  O38  1  0.388  0.889  0.851  1.0
  O  O39  1  0.129  0.852  0.634  1.0
  O  O40  1  0.183  0.622  0.902  1.0
  O  O41  1  0.474  0.435  0.985  1.0
  O  O42  1  0.522  0.943  0.516  1.0
  O  O43  1  0.923  0.504  0.461  1.0
  O  O44  1  0.290  0.683  0.385  1.0
  O  O45  1  0.623  0.328  0.382  1.0
  O  O46  1  0.252  0.346  0.613  1.0
  O  O47  1  0.701  0.668  0.675  1.0
[/CIF]
.