The compound described by KNa2(NiO2)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted edge-sharing NaO5 trigonal bipyramids. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Ni site, Ni(2) is bonded in a square co-planar geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded to one K(1), one Na(2), two equivalent Na(1), one Ni(1), and one Ni(2) atom to form distorted edge-sharing OKNa3Ni2 octahedra. In the second O site, O(1) is bonded in a 6-coordinate geometry to one K(1), one Na(1), two equivalent Na(2), one Ni(1), and one Ni(2) atom. In the third O site, O(2) is bonded in a 6-coordinate geometry to two equivalent K(1), one Na(1), one Na(2), one Ni(1), and one Ni(2) atom. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to two equivalent K(1), one Na(1), one Na(2), one Ni(1), and one Ni(2) atom. is represented by the CIF card [CIF]
data_KNa2(NiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.167
_cell_length_b   5.821
_cell_length_c   9.080
_cell_angle_alpha   65.702
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   537.988
_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
  K  K0  1  0.888  0.168  0.047  1.0
  K  K1  1  0.612  0.168  0.547  1.0
  K  K2  1  0.112  0.832  0.953  1.0
  K  K3  1  0.388  0.832  0.453  1.0
  Na  Na4  1  0.921  0.110  0.609  1.0
  Na  Na5  1  0.579  0.110  0.109  1.0
  Na  Na6  1  0.079  0.890  0.391  1.0
  Na  Na7  1  0.421  0.890  0.891  1.0
  Na  Na8  1  0.797  0.892  0.375  1.0
  Na  Na9  1  0.703  0.892  0.875  1.0
  Na  Na10  1  0.203  0.108  0.625  1.0
  Na  Na11  1  0.297  0.108  0.125  1.0
  Ni  Ni12  1  0.918  0.546  0.696  1.0
  Ni  Ni13  1  0.582  0.546  0.196  1.0
  Ni  Ni14  1  0.082  0.454  0.304  1.0
  Ni  Ni15  1  0.418  0.454  0.804  1.0
  Ni  Ni16  1  0.167  0.494  0.760  1.0
  Ni  Ni17  1  0.333  0.494  0.260  1.0
  Ni  Ni18  1  0.833  0.506  0.240  1.0
  Ni  Ni19  1  0.667  0.506  0.740  1.0
  O  O20  1  0.779  0.773  0.660  1.0
  O  O21  1  0.721  0.773  0.160  1.0
  O  O22  1  0.221  0.227  0.340  1.0
  O  O23  1  0.279  0.227  0.840  1.0
  O  O24  1  0.048  0.289  0.749  1.0
  O  O25  1  0.452  0.289  0.249  1.0
  O  O26  1  0.952  0.711  0.251  1.0
  O  O27  1  0.548  0.711  0.751  1.0
  O  O28  1  0.285  0.701  0.769  1.0
  O  O29  1  0.215  0.701  0.269  1.0
  O  O30  1  0.715  0.299  0.231  1.0
  O  O31  1  0.785  0.299  0.731  1.0
  O  O32  1  0.056  0.762  0.679  1.0
  O  O33  1  0.444  0.762  0.179  1.0
  O  O34  1  0.944  0.238  0.321  1.0
  O  O35  1  0.556  0.238  0.821  1.0
[/CIF]
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The compound described by KNa2(NiO2)2 crystallizes in the monoclinic P2_1/c space group. K(1) is bonded in a 6-coordinate geometry to one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form distorted edge-sharing NaO5 trigonal bipyramids. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Ni site, Ni(2) is bonded in a square co-planar geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(4) is bonded to one K(1), one Na(2), two equivalent Na(1), one Ni(1), and one Ni(2) atom to form distorted edge-sharing OKNa3Ni2 octahedra. In the second O site, O(1) is bonded in a 6-coordinate geometry to one K(1), one Na(1), two equivalent Na(2), one Ni(1), and one Ni(2) atom. In the third O site, O(2) is bonded in a 6-coordinate geometry to two equivalent K(1), one Na(1), one Na(2), one Ni(1), and one Ni(2) atom. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to two equivalent K(1), one Na(1), one Na(2), one Ni(1), and one Ni(2) atom. is represented by the CIF card [CIF]
data_KNa2(NiO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.167
_cell_length_b   5.821
_cell_length_c   9.080
_cell_angle_alpha   65.702
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   537.988
_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
  K  K0  1  0.888  0.168  0.047  1.0
  K  K1  1  0.612  0.168  0.547  1.0
  K  K2  1  0.112  0.832  0.953  1.0
  K  K3  1  0.388  0.832  0.453  1.0
  Na  Na4  1  0.921  0.110  0.609  1.0
  Na  Na5  1  0.579  0.110  0.109  1.0
  Na  Na6  1  0.079  0.890  0.391  1.0
  Na  Na7  1  0.421  0.890  0.891  1.0
  Na  Na8  1  0.797  0.892  0.375  1.0
  Na  Na9  1  0.703  0.892  0.875  1.0
  Na  Na10  1  0.203  0.108  0.625  1.0
  Na  Na11  1  0.297  0.108  0.125  1.0
  Ni  Ni12  1  0.918  0.546  0.696  1.0
  Ni  Ni13  1  0.582  0.546  0.196  1.0
  Ni  Ni14  1  0.082  0.454  0.304  1.0
  Ni  Ni15  1  0.418  0.454  0.804  1.0
  Ni  Ni16  1  0.167  0.494  0.760  1.0
  Ni  Ni17  1  0.333  0.494  0.260  1.0
  Ni  Ni18  1  0.833  0.506  0.240  1.0
  Ni  Ni19  1  0.667  0.506  0.740  1.0
  O  O20  1  0.779  0.773  0.660  1.0
  O  O21  1  0.721  0.773  0.160  1.0
  O  O22  1  0.221  0.227  0.340  1.0
  O  O23  1  0.279  0.227  0.840  1.0
  O  O24  1  0.048  0.289  0.749  1.0
  O  O25  1  0.452  0.289  0.249  1.0
  O  O26  1  0.952  0.711  0.251  1.0
  O  O27  1  0.548  0.711  0.751  1.0
  O  O28  1  0.285  0.701  0.769  1.0
  O  O29  1  0.215  0.701  0.269  1.0
  O  O30  1  0.715  0.299  0.231  1.0
  O  O31  1  0.785  0.299  0.731  1.0
  O  O32  1  0.056  0.762  0.679  1.0
  O  O33  1  0.444  0.762  0.179  1.0
  O  O34  1  0.944  0.238  0.321  1.0
  O  O35  1  0.556  0.238  0.821  1.0
[/CIF]
.