data_Rb3O2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.44
_cell_length_b   7.44
_cell_length_c   7.44
_cell_angle_alpha   56.68
_cell_angle_beta   56.68
_cell_angle_gamma   56.68
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Rb3O2
_chemical_formula_sum   'Rb6 O4'
_cell_volume   268.68
_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
  Rb  Rb4  1  0.52  0.79  0.78  1.0
  Rb  Rb5  1  0.42  0.96  0.78  1.0
  Rb  Rb6  1  0.06  0.25  0.78  1.0
  Rb  Rb7  1  0.94  0.75  0.89  1.0
  Rb  Rb8  1  0.58  0.04  0.89  1.0
  Rb  Rb9  1  0.48  0.21  0.89  1.0
  O  O0  1  0.0  0.0  0.6  1.0
  O  O1  1  0.0  0.0  0.73  1.0
  O  O2  1  0.0  0.0  0.93  1.0
  O  O3  1  0.0  0.0  0.06  1.0

data_Rb3O2
_symmetry_space_group_name_H-M   P-1
_cell_length_a   7.06
_cell_length_b   7.06
_cell_length_c   7.44
_cell_angle_alpha   61.66
_cell_angle_beta   61.66
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Rb3O2
_chemical_formula_sum   'Rb6 O4'
_cell_volume   268.68
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Rb  Rb0  2  0.04  0.06  0.83  1.0
  Rb  Rb1  2  0.21  0.06  0.76  1.0
  Rb  Rb2  2  0.25  0.94  0.25  1.0
  O  O3  2  0.0  0.1  0.4  1.0
  O  O4  2  0.0  0.23  0.27  1.0

Rb Rb Rb Rb Rb Rb O O O O
Rb3O2 is diamond structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two Rb3O2 clusters. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a single-bond geometry to one Rb(2) atom. The Rb(1)-Rb(2) bond length is 1.07 Å. In the second Rb site, Rb(2) is bonded in a 1-coordinate geometry to one Rb(1) and one O(1) atom. The Rb(2)-O(1) bond length is 2.60 Å. In the third Rb site, Rb(3) is bonded in a distorted single-bond geometry to one O(1) and one O(2) atom. The Rb(3)-O(1) bond length is 1.91 Å. The Rb(3)-O(2) bond length is 1.70 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(2), one Rb(3), and one O(2) atom. The O(1)-O(2) bond length is 0.94 Å. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(3) and one O(1) atom.