The structure described by H2O is Keatite structured and crystallizes in the tetragonal P4_12_12 space group. The structure is zero-dimensional and consists of twelve water molecules. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. O(2) is bonded in a distorted water-like geometry to one H(1) and one H(2) atom. is represented by the CIF file [CIF]
data_H2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.501
_cell_length_b   6.501
_cell_length_c   6.636
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   280.495
_cell_formula_units_Z   12
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
  H  H0  1  0.485  0.163  0.544  1.0
  H  H1  1  0.515  0.837  0.044  1.0
  H  H2  1  0.663  0.015  0.294  1.0
  H  H3  1  0.337  0.985  0.794  1.0
  H  H4  1  0.837  0.515  0.956  1.0
  H  H5  1  0.163  0.485  0.456  1.0
  H  H6  1  0.015  0.663  0.706  1.0
  H  H7  1  0.985  0.337  0.206  1.0
  H  H8  1  0.616  0.347  0.456  1.0
  H  H9  1  0.384  0.653  0.956  1.0
  H  H10  1  0.847  0.884  0.206  1.0
  H  H11  1  0.153  0.116  0.706  1.0
  H  H12  1  0.653  0.384  0.044  1.0
  H  H13  1  0.347  0.616  0.544  1.0
  H  H14  1  0.884  0.847  0.794  1.0
  H  H15  1  0.116  0.153  0.294  1.0
  H  H16  1  0.798  0.139  0.639  1.0
  H  H17  1  0.202  0.861  0.139  1.0
  H  H18  1  0.639  0.702  0.389  1.0
  H  H19  1  0.361  0.298  0.889  1.0
  H  H20  1  0.861  0.202  0.861  1.0
  H  H21  1  0.139  0.798  0.361  1.0
  H  H22  1  0.702  0.639  0.611  1.0
  H  H23  1  0.298  0.361  0.111  1.0
  O  O24  1  0.895  0.105  0.750  1.0
  O  O25  1  0.105  0.895  0.250  1.0
  O  O26  1  0.605  0.605  0.500  1.0
  O  O27  1  0.395  0.395  0.000  1.0
  O  O28  1  0.612  0.195  0.467  1.0
  O  O29  1  0.388  0.805  0.967  1.0
  O  O30  1  0.695  0.888  0.217  1.0
  O  O31  1  0.305  0.112  0.717  1.0
  O  O32  1  0.805  0.388  0.033  1.0
  O  O33  1  0.195  0.612  0.533  1.0
  O  O34  1  0.888  0.695  0.783  1.0
  O  O35  1  0.112  0.305  0.283  1.0
[/CIF]
.
The structure described by H2O is Keatite structured and crystallizes in the tetragonal P4_12_12 space group. The structure is zero-dimensional and consists of twelve water molecules. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. O(2) is bonded in a distorted water-like geometry to one H(1) and one H(2) atom. is represented by the CIF file [CIF]
data_H2O
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.501
_cell_length_b   6.501
_cell_length_c   6.636
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   280.495
_cell_formula_units_Z   12
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
  H  H0  1  0.485  0.163  0.544  1.0
  H  H1  1  0.515  0.837  0.044  1.0
  H  H2  1  0.663  0.015  0.294  1.0
  H  H3  1  0.337  0.985  0.794  1.0
  H  H4  1  0.837  0.515  0.956  1.0
  H  H5  1  0.163  0.485  0.456  1.0
  H  H6  1  0.015  0.663  0.706  1.0
  H  H7  1  0.985  0.337  0.206  1.0
  H  H8  1  0.616  0.347  0.456  1.0
  H  H9  1  0.384  0.653  0.956  1.0
  H  H10  1  0.847  0.884  0.206  1.0
  H  H11  1  0.153  0.116  0.706  1.0
  H  H12  1  0.653  0.384  0.044  1.0
  H  H13  1  0.347  0.616  0.544  1.0
  H  H14  1  0.884  0.847  0.794  1.0
  H  H15  1  0.116  0.153  0.294  1.0
  H  H16  1  0.798  0.139  0.639  1.0
  H  H17  1  0.202  0.861  0.139  1.0
  H  H18  1  0.639  0.702  0.389  1.0
  H  H19  1  0.361  0.298  0.889  1.0
  H  H20  1  0.861  0.202  0.861  1.0
  H  H21  1  0.139  0.798  0.361  1.0
  H  H22  1  0.702  0.639  0.611  1.0
  H  H23  1  0.298  0.361  0.111  1.0
  O  O24  1  0.895  0.105  0.750  1.0
  O  O25  1  0.105  0.895  0.250  1.0
  O  O26  1  0.605  0.605  0.500  1.0
  O  O27  1  0.395  0.395  0.000  1.0
  O  O28  1  0.612  0.195  0.467  1.0
  O  O29  1  0.388  0.805  0.967  1.0
  O  O30  1  0.695  0.888  0.217  1.0
  O  O31  1  0.305  0.112  0.717  1.0
  O  O32  1  0.805  0.388  0.033  1.0
  O  O33  1  0.195  0.612  0.533  1.0
  O  O34  1  0.888  0.695  0.783  1.0
  O  O35  1  0.112  0.305  0.283  1.0
[/CIF]
.