The compound described by Ge7HO16(O2)2 crystallizes in the cubic P-43m space group. The structure consists of four water atoms inside a Ge7HO16 framework. In the Ge7HO16 framework, there are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to four equivalent O(1) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. H(1) is bonded in a tetrahedral geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Ge(2) and one H(1) atom. is represented by the CIF file [CIF]
data_Ge7HO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.867
_cell_length_b   7.867
_cell_length_c   7.867
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   486.955
_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  0.000  0.500  0.500  1.0
  Ge  Ge1  1  0.500  0.500  0.000  1.0
  Ge  Ge2  1  0.500  0.000  0.500  1.0
  Ge  Ge3  1  0.656  0.656  0.344  1.0
  Ge  Ge4  1  0.656  0.344  0.656  1.0
  Ge  Ge5  1  0.344  0.656  0.656  1.0
  Ge  Ge6  1  0.344  0.344  0.344  1.0
  H  H7  1  0.500  0.500  0.500  1.0
  O  O8  1  0.882  0.634  0.366  1.0
  O  O9  1  0.634  0.634  0.118  1.0
  O  O10  1  0.634  0.882  0.366  1.0
  O  O11  1  0.882  0.366  0.634  1.0
  O  O12  1  0.634  0.366  0.882  1.0
  O  O13  1  0.634  0.118  0.634  1.0
  O  O14  1  0.118  0.634  0.634  1.0
  O  O15  1  0.366  0.634  0.882  1.0
  O  O16  1  0.366  0.882  0.634  1.0
  O  O17  1  0.118  0.366  0.366  1.0
  O  O18  1  0.366  0.366  0.118  1.0
  O  O19  1  0.366  0.118  0.366  1.0
  O  O20  1  0.390  0.390  0.610  1.0
  O  O21  1  0.390  0.610  0.390  1.0
  O  O22  1  0.610  0.390  0.390  1.0
  O  O23  1  0.610  0.610  0.610  1.0
  O  O24  1  0.195  0.195  0.805  1.0
  O  O25  1  0.195  0.805  0.195  1.0
  O  O26  1  0.805  0.195  0.195  1.0
  O  O27  1  0.805  0.805  0.805  1.0
[/CIF]
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The compound described by Ge7HO16(O2)2 crystallizes in the cubic P-43m space group. The structure consists of four water atoms inside a Ge7HO16 framework. In the Ge7HO16 framework, there are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a tetrahedral geometry to four equivalent O(1) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent O(1) and three equivalent O(2) atoms. H(1) is bonded in a tetrahedral geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Ge(2) and one H(1) atom. is represented by the CIF file [CIF]
data_Ge7HO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.867
_cell_length_b   7.867
_cell_length_c   7.867
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   486.955
_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  0.000  0.500  0.500  1.0
  Ge  Ge1  1  0.500  0.500  0.000  1.0
  Ge  Ge2  1  0.500  0.000  0.500  1.0
  Ge  Ge3  1  0.656  0.656  0.344  1.0
  Ge  Ge4  1  0.656  0.344  0.656  1.0
  Ge  Ge5  1  0.344  0.656  0.656  1.0
  Ge  Ge6  1  0.344  0.344  0.344  1.0
  H  H7  1  0.500  0.500  0.500  1.0
  O  O8  1  0.882  0.634  0.366  1.0
  O  O9  1  0.634  0.634  0.118  1.0
  O  O10  1  0.634  0.882  0.366  1.0
  O  O11  1  0.882  0.366  0.634  1.0
  O  O12  1  0.634  0.366  0.882  1.0
  O  O13  1  0.634  0.118  0.634  1.0
  O  O14  1  0.118  0.634  0.634  1.0
  O  O15  1  0.366  0.634  0.882  1.0
  O  O16  1  0.366  0.882  0.634  1.0
  O  O17  1  0.118  0.366  0.366  1.0
  O  O18  1  0.366  0.366  0.118  1.0
  O  O19  1  0.366  0.118  0.366  1.0
  O  O20  1  0.390  0.390  0.610  1.0
  O  O21  1  0.390  0.610  0.390  1.0
  O  O22  1  0.610  0.390  0.390  1.0
  O  O23  1  0.610  0.610  0.610  1.0
  O  O24  1  0.195  0.195  0.805  1.0
  O  O25  1  0.195  0.805  0.195  1.0
  O  O26  1  0.805  0.195  0.195  1.0
  O  O27  1  0.805  0.805  0.805  1.0
[/CIF]
.