The material structure described by (GeO2)10O2 crystallizes in the monoclinic Cm space group. The structure consists of four water atoms inside a GeO2 framework. In the GeO2 framework, there are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(4), one O(7), and two equivalent O(10) atoms to form GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra and corners with two equivalent Ge(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. In the second Ge site, Ge(2) is bonded to one O(5), one O(8), and two equivalent O(11) atoms to form GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra and corners with two equivalent Ge(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. In the third Ge site, Ge(3) is bonded in a 4-coordinate geometry to one O(5), one O(7), two equivalent O(1), and two equivalent O(9) atoms. In the fourth Ge site, Ge(4) is bonded to one O(4), one O(8), two equivalent O(2), and two equivalent O(9) atoms to form corner-sharing GeO6 octahedra. In the fifth Ge site, Ge(5) is bonded to one O(1), one O(10), one O(12), and one O(3) atom to form corner-sharing GeO4 tetrahedra. In the sixth Ge site, Ge(6) is bonded to one O(11), one O(13), one O(2), and one O(3) atom to form GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and corners with two equivalent Ge(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the seventh Ge site, Ge(7) is bonded to one O(12), one O(9), and two equivalent O(13) atoms to form distorted GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra, corners with two equivalent Ge(6)O4 tetrahedra, and corners with two equivalent Ge(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ge(5) and one Ge(6) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Ge(2) and one Ge(3) atom. In the sixth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Ge(1) and one Ge(3) atom. In the seventh O site, O(8) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(4) atom. In the eighth O site, O(9) is bonded in a 3-coordinate geometry to one Ge(3), one Ge(4), and one Ge(7) atom. In the ninth O site, O(10) is bonded in a bent 150 degrees geometry to one Ge(1) and one Ge(5) atom. In the tenth O site, O(11) is bonded in a bent 150 degrees geometry to one Ge(2) and one Ge(6) atom. In the eleventh O site, O(12) is bonded in a bent 150 degrees geometry to one Ge(5) and one Ge(7) atom. In the twelfth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one Ge(6) and two equivalent Ge(7) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ge5O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.312
_cell_length_b   8.312
_cell_length_c   7.997
_cell_angle_alpha   86.767
_cell_angle_beta   86.767
_cell_angle_gamma   126.495
_symmetry_Int_Tables_number   1
_cell_volume   440.651
_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
  Ge  Ge0  1  0.288  0.288  0.175  1.0
  Ge  Ge1  1  0.721  0.721  0.817  1.0
  Ge  Ge2  1  0.849  0.849  0.198  1.0
  Ge  Ge3  1  0.141  0.141  0.825  1.0
  Ge  Ge4  1  0.717  0.403  0.301  1.0
  Ge  Ge5  1  0.403  0.717  0.301  1.0
  Ge  Ge6  1  0.288  0.592  0.691  1.0
  Ge  Ge7  1  0.592  0.288  0.691  1.0
  Ge  Ge8  1  0.857  0.272  0.963  1.0
  Ge  Ge9  1  0.272  0.857  0.963  1.0
  O  O10  1  0.853  0.661  0.319  1.0
  O  O11  1  0.661  0.853  0.319  1.0
  O  O12  1  0.138  0.332  0.690  1.0
  O  O13  1  0.332  0.138  0.690  1.0
  O  O14  1  0.711  0.289  0.500  1.0
  O  O15  1  0.289  0.711  0.500  1.0
  O  O16  1  0.333  0.333  0.953  1.0
  O  O17  1  0.694  0.694  0.041  1.0
  O  O18  1  0.121  0.871  0.506  1.0
  O  O19  1  0.871  0.121  0.506  1.0
  O  O20  1  0.062  0.062  0.271  1.0
  O  O21  1  0.942  0.942  0.715  1.0
  O  O22  1  0.929  0.115  0.988  1.0
  O  O23  1  0.115  0.929  0.988  1.0
  O  O24  1  0.468  0.269  0.260  1.0
  O  O25  1  0.269  0.468  0.260  1.0
  O  O26  1  0.533  0.735  0.744  1.0
  O  O27  1  0.735  0.533  0.744  1.0
  O  O28  1  0.857  0.363  0.154  1.0
  O  O29  1  0.363  0.857  0.154  1.0
  O  O30  1  0.152  0.622  0.862  1.0
  O  O31  1  0.622  0.152  0.862  1.0
[/CIF]
.
The material structure described by (GeO2)10O2 crystallizes in the monoclinic Cm space group. The structure consists of four water atoms inside a GeO2 framework. In the GeO2 framework, there are seven inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(4), one O(7), and two equivalent O(10) atoms to form GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra and corners with two equivalent Ge(5)O4 tetrahedra. The corner-sharing octahedral tilt angles are 61°. In the second Ge site, Ge(2) is bonded to one O(5), one O(8), and two equivalent O(11) atoms to form GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra and corners with two equivalent Ge(6)O4 tetrahedra. The corner-sharing octahedral tilt angles are 56°. In the third Ge site, Ge(3) is bonded in a 4-coordinate geometry to one O(5), one O(7), two equivalent O(1), and two equivalent O(9) atoms. In the fourth Ge site, Ge(4) is bonded to one O(4), one O(8), two equivalent O(2), and two equivalent O(9) atoms to form corner-sharing GeO6 octahedra. In the fifth Ge site, Ge(5) is bonded to one O(1), one O(10), one O(12), and one O(3) atom to form corner-sharing GeO4 tetrahedra. In the sixth Ge site, Ge(6) is bonded to one O(11), one O(13), one O(2), and one O(3) atom to form GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra,  a cornercorner with one Ge(5)O4 tetrahedra, and corners with two equivalent Ge(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the seventh Ge site, Ge(7) is bonded to one O(12), one O(9), and two equivalent O(13) atoms to form distorted GeO4 tetrahedra that share  a cornercorner with one Ge(4)O6 octahedra,  a cornercorner with one Ge(5)O4 tetrahedra, corners with two equivalent Ge(6)O4 tetrahedra, and corners with two equivalent Ge(7)O4 tetrahedra. The corner-sharing octahedral tilt angles are 58°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Ge(3) and one Ge(5) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(4) and one Ge(6) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ge(5) and one Ge(6) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(4) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Ge(2) and one Ge(3) atom. In the sixth O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Ge(1) and one Ge(3) atom. In the seventh O site, O(8) is bonded in a bent 120 degrees geometry to one Ge(2) and one Ge(4) atom. In the eighth O site, O(9) is bonded in a 3-coordinate geometry to one Ge(3), one Ge(4), and one Ge(7) atom. In the ninth O site, O(10) is bonded in a bent 150 degrees geometry to one Ge(1) and one Ge(5) atom. In the tenth O site, O(11) is bonded in a bent 150 degrees geometry to one Ge(2) and one Ge(6) atom. In the eleventh O site, O(12) is bonded in a bent 150 degrees geometry to one Ge(5) and one Ge(7) atom. In the twelfth O site, O(13) is bonded in a distorted bent 120 degrees geometry to one Ge(6) and two equivalent Ge(7) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ge5O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.312
_cell_length_b   8.312
_cell_length_c   7.997
_cell_angle_alpha   86.767
_cell_angle_beta   86.767
_cell_angle_gamma   126.495
_symmetry_Int_Tables_number   1
_cell_volume   440.651
_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
  Ge  Ge0  1  0.288  0.288  0.175  1.0
  Ge  Ge1  1  0.721  0.721  0.817  1.0
  Ge  Ge2  1  0.849  0.849  0.198  1.0
  Ge  Ge3  1  0.141  0.141  0.825  1.0
  Ge  Ge4  1  0.717  0.403  0.301  1.0
  Ge  Ge5  1  0.403  0.717  0.301  1.0
  Ge  Ge6  1  0.288  0.592  0.691  1.0
  Ge  Ge7  1  0.592  0.288  0.691  1.0
  Ge  Ge8  1  0.857  0.272  0.963  1.0
  Ge  Ge9  1  0.272  0.857  0.963  1.0
  O  O10  1  0.853  0.661  0.319  1.0
  O  O11  1  0.661  0.853  0.319  1.0
  O  O12  1  0.138  0.332  0.690  1.0
  O  O13  1  0.332  0.138  0.690  1.0
  O  O14  1  0.711  0.289  0.500  1.0
  O  O15  1  0.289  0.711  0.500  1.0
  O  O16  1  0.333  0.333  0.953  1.0
  O  O17  1  0.694  0.694  0.041  1.0
  O  O18  1  0.121  0.871  0.506  1.0
  O  O19  1  0.871  0.121  0.506  1.0
  O  O20  1  0.062  0.062  0.271  1.0
  O  O21  1  0.942  0.942  0.715  1.0
  O  O22  1  0.929  0.115  0.988  1.0
  O  O23  1  0.115  0.929  0.988  1.0
  O  O24  1  0.468  0.269  0.260  1.0
  O  O25  1  0.269  0.468  0.260  1.0
  O  O26  1  0.533  0.735  0.744  1.0
  O  O27  1  0.735  0.533  0.744  1.0
  O  O28  1  0.857  0.363  0.154  1.0
  O  O29  1  0.363  0.857  0.154  1.0
  O  O30  1  0.152  0.622  0.862  1.0
  O  O31  1  0.622  0.152  0.862  1.0
[/CIF]
.