The material structure described by Cs2NiO2 crystallizes in the tetragonal I4/mmm space group. Cs(1) is bonded to five equivalent O(1) atoms to form a mixture of corner and edge-sharing CsO5 square pyramids. Ni(1) is bonded in a linear geometry to two equivalent O(1) atoms. O(1) is bonded in a distorted single-bond geometry to five equivalent Cs(1) and one Ni(1) atom. is represented by the CIF file [CIF]
data_Cs2NiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.471
_cell_length_b   7.471
_cell_length_c   7.471
_cell_angle_alpha   145.716
_cell_angle_beta   145.716
_cell_angle_gamma   49.269
_symmetry_Int_Tables_number   1
_cell_volume   131.739
_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
  Cs  Cs0  1  0.349  0.349  0.000  1.0
  Cs  Cs1  1  0.651  0.651  0.000  1.0
  Ni  Ni2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.124  0.124  0.000  1.0
  O  O4  1  0.876  0.876  0.000  1.0
[/CIF]
.
The material structure described by Cs2NiO2 crystallizes in the tetragonal I4/mmm space group. Cs(1) is bonded to five equivalent O(1) atoms to form a mixture of corner and edge-sharing CsO5 square pyramids. Ni(1) is bonded in a linear geometry to two equivalent O(1) atoms. O(1) is bonded in a distorted single-bond geometry to five equivalent Cs(1) and one Ni(1) atom. is represented by the CIF file [CIF]
data_Cs2NiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.471
_cell_length_b   7.471
_cell_length_c   7.471
_cell_angle_alpha   145.716
_cell_angle_beta   145.716
_cell_angle_gamma   49.269
_symmetry_Int_Tables_number   1
_cell_volume   131.739
_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
  Cs  Cs0  1  0.349  0.349  0.000  1.0
  Cs  Cs1  1  0.651  0.651  0.000  1.0
  Ni  Ni2  1  0.000  0.000  0.000  1.0
  O  O3  1  0.124  0.124  0.000  1.0
  O  O4  1  0.876  0.876  0.000  1.0
[/CIF]
.