The crystal structure described by Rb2NiO2 crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to five equivalent O(1) atoms to form a mixture of edge and corner-sharing RbO5 square pyramids. Ni(1) is bonded in a linear geometry to two equivalent O(1) atoms. O(1) is bonded to five equivalent Rb(1) and one Ni(1) atom to form a mixture of distorted edge and corner-sharing ORb5Ni octahedra. The corner-sharing octahedral tilt angles range from 0-12°. is represented by the CIF card [CIF]
data_Rb2NiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.155
_cell_length_b   4.155
_cell_length_c   7.178
_cell_angle_alpha   106.823
_cell_angle_beta   106.823
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   113.060
_cell_formula_units_Z   1
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  Rb0  1  0.348  0.348  0.696  1.0
  Rb  Rb1  1  0.652  0.652  0.304  1.0
  Ni  Ni2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.871  0.871  0.742  1.0
  O  O4  1  0.129  0.129  0.258  1.0
[/CIF]
.
The crystal structure described by Rb2NiO2 crystallizes in the tetragonal I4/mmm space group. Rb(1) is bonded to five equivalent O(1) atoms to form a mixture of edge and corner-sharing RbO5 square pyramids. Ni(1) is bonded in a linear geometry to two equivalent O(1) atoms. O(1) is bonded to five equivalent Rb(1) and one Ni(1) atom to form a mixture of distorted edge and corner-sharing ORb5Ni octahedra. The corner-sharing octahedral tilt angles range from 0-12°. is represented by the CIF card [CIF]
data_Rb2NiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.155
_cell_length_b   4.155
_cell_length_c   7.178
_cell_angle_alpha   106.823
_cell_angle_beta   106.823
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   113.060
_cell_formula_units_Z   1
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  Rb0  1  0.348  0.348  0.696  1.0
  Rb  Rb1  1  0.652  0.652  0.304  1.0
  Ni  Ni2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.871  0.871  0.742  1.0
  O  O4  1  0.129  0.129  0.258  1.0
[/CIF]
.