The crystal structure described by ZnO2 is Pyrite-like structured and crystallizes in the orthorhombic P2_12_12_1 space group. Zn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra, corners with three equivalent O(1)Zn3O tetrahedra, corners with three equivalent O(2)Zn3O tetrahedra, and edges with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 67-69°. There are two inequivalent O sites. In the first O site, O(2) is bonded to three equivalent Zn(1) and one O(1) atom to form distorted OZn3O tetrahedra that share corners with three equivalent Zn(1)O6 octahedra, corners with two equivalent O(2)Zn3O tetrahedra, corners with seven equivalent O(1)Zn3O tetrahedra,  an edgeedge with one O(1)Zn3O tetrahedra, and edges with two equivalent O(2)Zn3O tetrahedra. The corner-sharing octahedral tilt angles range from 66-74°. In the second O site, O(1) is bonded to three equivalent Zn(1) and one O(2) atom to form OZn3O tetrahedra that share corners with three equivalent Zn(1)O6 octahedra, corners with six equivalent O(1)Zn3O tetrahedra, corners with seven equivalent O(2)Zn3O tetrahedra, and  an edgeedge with one O(2)Zn3O tetrahedra. The corner-sharing octahedral tilt angles range from 57-65°. is represented by the CIF card [CIF]
data_ZnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.923
_cell_length_b   3.201
_cell_length_c   9.994
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   125.505
_cell_formula_units_Z   4
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  0.178  0.991  0.622  1.0
  Zn  Zn1  1  0.678  0.509  0.378  1.0
  Zn  Zn2  1  0.822  0.491  0.878  1.0
  Zn  Zn3  1  0.322  0.009  0.122  1.0
  O  O4  1  0.512  0.492  0.582  1.0
  O  O5  1  0.012  0.008  0.418  1.0
  O  O6  1  0.488  0.992  0.918  1.0
  O  O7  1  0.988  0.508  0.082  1.0
  O  O8  1  0.171  0.992  0.835  1.0
  O  O9  1  0.671  0.508  0.165  1.0
  O  O10  1  0.829  0.492  0.665  1.0
  O  O11  1  0.329  0.008  0.335  1.0
[/CIF]
.
The crystal structure described by ZnO2 is Pyrite-like structured and crystallizes in the orthorhombic P2_12_12_1 space group. Zn(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form ZnO6 octahedra that share corners with four equivalent Zn(1)O6 octahedra, corners with three equivalent O(1)Zn3O tetrahedra, corners with three equivalent O(2)Zn3O tetrahedra, and edges with four equivalent Zn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 67-69°. There are two inequivalent O sites. In the first O site, O(2) is bonded to three equivalent Zn(1) and one O(1) atom to form distorted OZn3O tetrahedra that share corners with three equivalent Zn(1)O6 octahedra, corners with two equivalent O(2)Zn3O tetrahedra, corners with seven equivalent O(1)Zn3O tetrahedra,  an edgeedge with one O(1)Zn3O tetrahedra, and edges with two equivalent O(2)Zn3O tetrahedra. The corner-sharing octahedral tilt angles range from 66-74°. In the second O site, O(1) is bonded to three equivalent Zn(1) and one O(2) atom to form OZn3O tetrahedra that share corners with three equivalent Zn(1)O6 octahedra, corners with six equivalent O(1)Zn3O tetrahedra, corners with seven equivalent O(2)Zn3O tetrahedra, and  an edgeedge with one O(2)Zn3O tetrahedra. The corner-sharing octahedral tilt angles range from 57-65°. is represented by the CIF card [CIF]
data_ZnO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.923
_cell_length_b   3.201
_cell_length_c   9.994
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   125.505
_cell_formula_units_Z   4
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  0.178  0.991  0.622  1.0
  Zn  Zn1  1  0.678  0.509  0.378  1.0
  Zn  Zn2  1  0.822  0.491  0.878  1.0
  Zn  Zn3  1  0.322  0.009  0.122  1.0
  O  O4  1  0.512  0.492  0.582  1.0
  O  O5  1  0.012  0.008  0.418  1.0
  O  O6  1  0.488  0.992  0.918  1.0
  O  O7  1  0.988  0.508  0.082  1.0
  O  O8  1  0.171  0.992  0.835  1.0
  O  O9  1  0.671  0.508  0.165  1.0
  O  O10  1  0.829  0.492  0.665  1.0
  O  O11  1  0.329  0.008  0.335  1.0
[/CIF]
.