The structure described by (K3Ge7O19)2H2O2 crystallizes in the trigonal R3m space group. The structure consists of three water molecules inside a K3Ge7O19 framework. In the K3Ge7O19 framework, K(1) is bonded in a 11-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(3), one O(4), and two equivalent O(5) atoms to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the second Ge site, Ge(2) is bonded to three equivalent O(3) and three equivalent O(7) atoms to form corner-sharing GeO6 octahedra. In the third Ge site, Ge(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(5), and two equivalent O(7) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to three equivalent K(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent K(1) atoms. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent K(1), one Ge(1), and one Ge(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Ge(1), and one Ge(3) atom. In the sixth O site, O(7) is bonded in a trigonal non-coplanar geometry to one Ge(2) and two equivalent Ge(3) atoms. is represented by the CIF file [CIF]
data_K3Ge7HO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.811
_cell_length_b   7.811
_cell_length_c   7.811
_cell_angle_alpha   89.443
_cell_angle_beta   89.443
_cell_angle_gamma   89.443
_symmetry_Int_Tables_number   1
_cell_volume   476.478
_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
  K  K0  1  0.982  0.457  0.982  1.0
  K  K1  1  0.982  0.982  0.457  1.0
  K  K2  1  0.457  0.982  0.982  1.0
  Ge  Ge3  1  0.983  0.488  0.488  1.0
  Ge  Ge4  1  0.488  0.983  0.488  1.0
  Ge  Ge5  1  0.488  0.488  0.983  1.0
  Ge  Ge6  1  0.353  0.353  0.353  1.0
  Ge  Ge7  1  0.325  0.639  0.639  1.0
  Ge  Ge8  1  0.639  0.639  0.325  1.0
  Ge  Ge9  1  0.639  0.325  0.639  1.0
  H  H10  1  0.550  0.550  0.550  1.0
  O  O11  1  0.814  0.814  0.814  1.0
  O  O12  1  0.808  0.234  0.234  1.0
  O  O13  1  0.234  0.234  0.808  1.0
  O  O14  1  0.234  0.808  0.234  1.0
  O  O15  1  0.118  0.360  0.360  1.0
  O  O16  1  0.360  0.118  0.360  1.0
  O  O17  1  0.360  0.360  0.118  1.0
  O  O18  1  0.097  0.625  0.625  1.0
  O  O19  1  0.344  0.871  0.623  1.0
  O  O20  1  0.344  0.623  0.871  1.0
  O  O21  1  0.871  0.623  0.344  1.0
  O  O22  1  0.623  0.871  0.344  1.0
  O  O23  1  0.625  0.625  0.097  1.0
  O  O24  1  0.871  0.344  0.623  1.0
  O  O25  1  0.625  0.097  0.625  1.0
  O  O26  1  0.623  0.344  0.871  1.0
  O  O27  1  0.621  0.621  0.621  1.0
  O  O28  1  0.611  0.382  0.382  1.0
  O  O29  1  0.382  0.382  0.611  1.0
  O  O30  1  0.382  0.611  0.382  1.0
[/CIF]
.
The structure described by (K3Ge7O19)2H2O2 crystallizes in the trigonal R3m space group. The structure consists of three water molecules inside a K3Ge7O19 framework. In the K3Ge7O19 framework, K(1) is bonded in a 11-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(5) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(3), one O(4), and two equivalent O(5) atoms to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the second Ge site, Ge(2) is bonded to three equivalent O(3) and three equivalent O(7) atoms to form corner-sharing GeO6 octahedra. In the third Ge site, Ge(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(5), and two equivalent O(7) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to three equivalent K(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent K(1) atoms. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent K(1), one Ge(1), and one Ge(3) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent K(1), one Ge(1), and one Ge(3) atom. In the sixth O site, O(7) is bonded in a trigonal non-coplanar geometry to one Ge(2) and two equivalent Ge(3) atoms. is represented by the CIF file [CIF]
data_K3Ge7HO20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.811
_cell_length_b   7.811
_cell_length_c   7.811
_cell_angle_alpha   89.443
_cell_angle_beta   89.443
_cell_angle_gamma   89.443
_symmetry_Int_Tables_number   1
_cell_volume   476.478
_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
  K  K0  1  0.982  0.457  0.982  1.0
  K  K1  1  0.982  0.982  0.457  1.0
  K  K2  1  0.457  0.982  0.982  1.0
  Ge  Ge3  1  0.983  0.488  0.488  1.0
  Ge  Ge4  1  0.488  0.983  0.488  1.0
  Ge  Ge5  1  0.488  0.488  0.983  1.0
  Ge  Ge6  1  0.353  0.353  0.353  1.0
  Ge  Ge7  1  0.325  0.639  0.639  1.0
  Ge  Ge8  1  0.639  0.639  0.325  1.0
  Ge  Ge9  1  0.639  0.325  0.639  1.0
  H  H10  1  0.550  0.550  0.550  1.0
  O  O11  1  0.814  0.814  0.814  1.0
  O  O12  1  0.808  0.234  0.234  1.0
  O  O13  1  0.234  0.234  0.808  1.0
  O  O14  1  0.234  0.808  0.234  1.0
  O  O15  1  0.118  0.360  0.360  1.0
  O  O16  1  0.360  0.118  0.360  1.0
  O  O17  1  0.360  0.360  0.118  1.0
  O  O18  1  0.097  0.625  0.625  1.0
  O  O19  1  0.344  0.871  0.623  1.0
  O  O20  1  0.344  0.623  0.871  1.0
  O  O21  1  0.871  0.623  0.344  1.0
  O  O22  1  0.623  0.871  0.344  1.0
  O  O23  1  0.625  0.625  0.097  1.0
  O  O24  1  0.871  0.344  0.623  1.0
  O  O25  1  0.625  0.097  0.625  1.0
  O  O26  1  0.623  0.344  0.871  1.0
  O  O27  1  0.621  0.621  0.621  1.0
  O  O28  1  0.611  0.382  0.382  1.0
  O  O29  1  0.382  0.382  0.611  1.0
  O  O30  1  0.382  0.611  0.382  1.0
[/CIF]
.