data_ZnO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.29
_cell_length_b   3.29
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnO
_chemical_formula_sum   'Zn2 O2'
_cell_volume   49.66
_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
  Zn  Zn0  1  0.0  0.9  0.64  1.0
  Zn  Zn1  1  0.65  0.95  0.29  1.0
  O  O2  1  0.0  0.9  0.63  1.0
  O  O3  1  0.65  0.95  0.27  1.0

data_ZnO
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.29
_cell_length_b   3.29
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnO
_chemical_formula_sum   'Zn2 O2'
_cell_volume   49.66
_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
  Zn  Zn0  1  0.0  0.9  0.64  1.0
  Zn  Zn1  1  0.65  0.95  0.29  1.0
  O  O2  1  0.0  0.9  0.63  1.0
  O  O3  1  0.65  0.95  0.27  1.0

Zn Zn O O
ZnO is alpha carbon monoxide-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of two zinc water molecules. Zn(1) is bonded in a single-bond geometry to one O(1) atom. The Zn(1)-O(1) bond length is 0.08 Å. O(1) is bonded in a single-bond geometry to one Zn(1) atom.