The material structure described by KNa2NiO2 crystallizes in the tetragonal I4mm space group. K(1) is bonded in a 5-coordinate geometry to four equivalent Ni(1) and one O(1) atom. Na(1) is bonded in a distorted see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Ni(1) is bonded in a linear geometry to four equivalent K(1), one O(1), and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), four equivalent Na(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Na(1) and one Ni(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KNa2NiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.448
_cell_length_b   4.448
_cell_length_c   6.141
_cell_angle_alpha   111.159
_cell_angle_beta   111.156
_cell_angle_gamma   90.199
_symmetry_Int_Tables_number   1
_cell_volume   104.415
_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
  K  K0  1  0.054  0.554  0.108  1.0
  Na  Na1  1  0.765  0.765  0.531  1.0
  Na  Na2  1  0.265  0.265  0.531  1.0
  Ni  Ni3  1  0.493  0.993  0.987  1.0
  O  O4  1  0.323  0.823  0.646  1.0
  O  O5  1  0.664  0.164  0.327  1.0
[/CIF]
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The material structure described by KNa2NiO2 crystallizes in the tetragonal I4mm space group. K(1) is bonded in a 5-coordinate geometry to four equivalent Ni(1) and one O(1) atom. Na(1) is bonded in a distorted see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Ni(1) is bonded in a linear geometry to four equivalent K(1), one O(1), and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(1), four equivalent Na(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to four equivalent Na(1) and one Ni(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KNa2NiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.448
_cell_length_b   4.448
_cell_length_c   6.141
_cell_angle_alpha   111.159
_cell_angle_beta   111.156
_cell_angle_gamma   90.199
_symmetry_Int_Tables_number   1
_cell_volume   104.415
_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
  K  K0  1  0.054  0.554  0.108  1.0
  Na  Na1  1  0.765  0.765  0.531  1.0
  Na  Na2  1  0.265  0.265  0.531  1.0
  Ni  Ni3  1  0.493  0.993  0.987  1.0
  O  O4  1  0.323  0.823  0.646  1.0
  O  O5  1  0.664  0.164  0.327  1.0
[/CIF]
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