The compound described by Na2CdO2 crystallizes in the triclinic P1 space group. There are sixteen inequivalent Na sites. In the first Na site, Na(1) is bonded in a 2-coordinate geometry to one Cd(1) and one O(14) atom. In the second Na site, Na(2) is bonded in a 1-coordinate geometry to one O(11), one O(2), one O(7), and one O(8) atom. In the third Na site, Na(3) is bonded in a 3-coordinate geometry to one Cd(4), one O(3), and one O(6) atom. In the fourth Na site, Na(4) is bonded in a 1-coordinate geometry to one Cd(5), one O(10), one O(12), and one O(3) atom. In the fifth Na site, Na(5) is bonded in a 3-coordinate geometry to one O(11), one O(3), and one O(4) atom. In the sixth Na site, Na(6) is bonded in a 3-coordinate geometry to one O(10), one O(13), and one O(14) atom. In the seventh Na site, Na(7) is bonded in a 1-coordinate geometry to one O(12), one O(15), and one O(5) atom. In the eighth Na site, Na(8) is bonded in a 4-coordinate geometry to one O(14), one O(15), one O(16), and one O(6) atom. In the ninth Na site, Na(9) is bonded in a 2-coordinate geometry to one Cd(7), one O(14), and one O(3) atom. In the tenth Na site, Na(10) is bonded in a 3-coordinate geometry to one O(12), one O(16), and one O(7) atom. In the eleventh Na site, Na(11) is bonded in a 2-coordinate geometry to one O(16), one O(4), and one O(9) atom. In the twelfth Na site, Na(12) is bonded in a 4-coordinate geometry to one O(15), one O(2), one O(6), and one O(8) atom. In the thirteenth Na site, Na(13) is bonded in a 6-coordinate geometry to one Cd(5), one Cd(8), one O(1), one O(10), one O(16), and one O(2) atom. In the fourteenth Na site, Na(14) is bonded in a 1-coordinate geometry to one O(1), one O(11), and one O(4) atom. In the fifteenth Na site, Na(15) is bonded in a 3-coordinate geometry to one O(13), one O(2), and one O(6) atom. In the sixteenth Na site, Na(16) is bonded in a 3-coordinate geometry to one O(12), one O(3), and one O(5) atom. There are eight inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to one Na(1), one O(13), one O(14), and one O(5) atom. In the second Cd site, Cd(2) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(14), and one O(8) atom. In the third Cd site, Cd(3) is bonded in a 1-coordinate geometry to one O(2) and one O(3) atom. In the fourth Cd site, Cd(4) is bonded in a 1-coordinate geometry to one Na(3), one O(3), and one O(6) atom. In the fifth Cd site, Cd(5) is bonded in a 3-coordinate geometry to one Na(13), one Na(4), one O(10), and one O(3) atom. In the sixth Cd site, Cd(6) is bonded in a 2-coordinate geometry to one O(11), one O(13), and one O(2) atom. In the seventh Cd site, Cd(7) is bonded in a 4-coordinate geometry to one Na(9), one O(14), one O(5), and one O(9) atom. In the eighth Cd site, Cd(8) is bonded in a distorted single-bond geometry to one Na(13) and one O(2) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Na(13), one Na(14), and one Cd(2) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Na(12), one Na(13), one Na(15), one Na(2), one Cd(3), one Cd(6), and one Cd(8) atom. In the third O site, O(3) is bonded in a 8-coordinate geometry to one Na(16), one Na(3), one Na(4), one Na(5), one Na(9), one Cd(3), one Cd(4), and one Cd(5) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(11), one Na(14), and one Na(5) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Na(16), one Na(7), one Cd(1), and one Cd(7) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(12), one Na(15), one Na(3), one Na(8), and one Cd(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(10) and one Na(2) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Na(12), one Na(2), and one Cd(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Na(11) and one Cd(7) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(13), one Na(4), one Na(6), one Cd(2), and one Cd(5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Na(14), one Na(2), one Na(5), and one Cd(6) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(10), one Na(16), one Na(4), and one Na(7) atom. In the thirteenth O site, O(13) is bonded in a square co-planar geometry to one Na(15), one Na(6), one Cd(1), and one Cd(6) atom. In the fourteenth O site, O(14) is bonded in a 7-coordinate geometry to one Na(1), one Na(6), one Na(8), one Na(9), one Cd(1), one Cd(2), and one Cd(7) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Na(12), one Na(7), and one Na(8) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Na(10), one Na(11), one Na(13), and one Na(8) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2CdO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.388
_cell_length_b   9.402
_cell_length_c   9.409
_cell_angle_alpha   109.665
_cell_angle_beta   109.353
_cell_angle_gamma   109.287
_symmetry_Int_Tables_number   1
_cell_volume   640.180
_cell_formula_units_Z   8
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
  Na  Na0  1  0.579  0.811  0.455  1.0
  Na  Na1  1  0.501  0.992  0.732  1.0
  Na  Na2  1  0.180  0.442  0.047  1.0
  Na  Na3  1  0.977  0.707  0.034  1.0
  Na  Na4  1  0.000  0.536  0.225  1.0
  Na  Na5  1  0.813  0.804  0.230  1.0
  Na  Na6  1  0.813  0.580  0.467  1.0
  Na  Na7  1  0.472  0.521  0.257  1.0
  Na  Na8  1  0.297  0.755  0.233  1.0
  Na  Na9  1  0.764  0.807  0.736  1.0
  Na  Na10  1  0.212  0.172  0.278  1.0
  Na  Na11  1  0.441  0.216  0.009  1.0
  Na  Na12  1  0.541  0.491  0.737  1.0
  Na  Na13  1  0.197  0.413  0.535  1.0
  Na  Na14  1  0.199  0.203  0.767  1.0
  Na  Na15  1  0.002  0.467  0.774  1.0
  Cd  Cd16  1  0.760  0.030  0.505  1.0
  Cd  Cd17  1  0.545  0.767  0.997  1.0
  Cd  Cd18  1  0.688  0.237  0.768  1.0
  Cd  Cd19  1  0.040  0.300  0.961  1.0
  Cd  Cd20  1  0.814  0.559  0.954  1.0
  Cd  Cd21  1  0.243  0.982  0.487  1.0
  Cd  Cd22  1  0.476  0.986  0.277  1.0
  Cd  Cd23  1  0.429  0.195  0.543  1.0
  O  O24  1  0.328  0.550  0.714  1.0
  O  O25  1  0.476  0.218  0.750  1.0
  O  O26  1  0.978  0.483  0.006  1.0
  O  O27  1  0.035  0.283  0.254  1.0
  O  O28  1  0.771  0.298  0.472  1.0
  O  O29  1  0.276  0.316  0.968  1.0
  O  O30  1  0.678  0.966  0.792  1.0
  O  O31  1  0.515  0.007  0.988  1.0
  O  O32  1  0.338  0.048  0.208  1.0
  O  O33  1  0.723  0.689  0.025  1.0
  O  O34  1  0.210  0.695  0.530  1.0
  O  O35  1  0.983  0.733  0.744  1.0
  O  O36  1  0.002  0.005  0.500  1.0
  O  O37  1  0.550  0.808  0.239  1.0
  O  O38  1  0.654  0.436  0.300  1.0
  O  O39  1  0.500  0.490  0.503  1.0
[/CIF]
.
The compound described by Na2CdO2 crystallizes in the triclinic P1 space group. There are sixteen inequivalent Na sites. In the first Na site, Na(1) is bonded in a 2-coordinate geometry to one Cd(1) and one O(14) atom. In the second Na site, Na(2) is bonded in a 1-coordinate geometry to one O(11), one O(2), one O(7), and one O(8) atom. In the third Na site, Na(3) is bonded in a 3-coordinate geometry to one Cd(4), one O(3), and one O(6) atom. In the fourth Na site, Na(4) is bonded in a 1-coordinate geometry to one Cd(5), one O(10), one O(12), and one O(3) atom. In the fifth Na site, Na(5) is bonded in a 3-coordinate geometry to one O(11), one O(3), and one O(4) atom. In the sixth Na site, Na(6) is bonded in a 3-coordinate geometry to one O(10), one O(13), and one O(14) atom. In the seventh Na site, Na(7) is bonded in a 1-coordinate geometry to one O(12), one O(15), and one O(5) atom. In the eighth Na site, Na(8) is bonded in a 4-coordinate geometry to one O(14), one O(15), one O(16), and one O(6) atom. In the ninth Na site, Na(9) is bonded in a 2-coordinate geometry to one Cd(7), one O(14), and one O(3) atom. In the tenth Na site, Na(10) is bonded in a 3-coordinate geometry to one O(12), one O(16), and one O(7) atom. In the eleventh Na site, Na(11) is bonded in a 2-coordinate geometry to one O(16), one O(4), and one O(9) atom. In the twelfth Na site, Na(12) is bonded in a 4-coordinate geometry to one O(15), one O(2), one O(6), and one O(8) atom. In the thirteenth Na site, Na(13) is bonded in a 6-coordinate geometry to one Cd(5), one Cd(8), one O(1), one O(10), one O(16), and one O(2) atom. In the fourteenth Na site, Na(14) is bonded in a 1-coordinate geometry to one O(1), one O(11), and one O(4) atom. In the fifteenth Na site, Na(15) is bonded in a 3-coordinate geometry to one O(13), one O(2), and one O(6) atom. In the sixteenth Na site, Na(16) is bonded in a 3-coordinate geometry to one O(12), one O(3), and one O(5) atom. There are eight inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to one Na(1), one O(13), one O(14), and one O(5) atom. In the second Cd site, Cd(2) is bonded in a 4-coordinate geometry to one O(1), one O(10), one O(14), and one O(8) atom. In the third Cd site, Cd(3) is bonded in a 1-coordinate geometry to one O(2) and one O(3) atom. In the fourth Cd site, Cd(4) is bonded in a 1-coordinate geometry to one Na(3), one O(3), and one O(6) atom. In the fifth Cd site, Cd(5) is bonded in a 3-coordinate geometry to one Na(13), one Na(4), one O(10), and one O(3) atom. In the sixth Cd site, Cd(6) is bonded in a 2-coordinate geometry to one O(11), one O(13), and one O(2) atom. In the seventh Cd site, Cd(7) is bonded in a 4-coordinate geometry to one Na(9), one O(14), one O(5), and one O(9) atom. In the eighth Cd site, Cd(8) is bonded in a distorted single-bond geometry to one Na(13) and one O(2) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Na(13), one Na(14), and one Cd(2) atom. In the second O site, O(2) is bonded in a 7-coordinate geometry to one Na(12), one Na(13), one Na(15), one Na(2), one Cd(3), one Cd(6), and one Cd(8) atom. In the third O site, O(3) is bonded in a 8-coordinate geometry to one Na(16), one Na(3), one Na(4), one Na(5), one Na(9), one Cd(3), one Cd(4), and one Cd(5) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(11), one Na(14), and one Na(5) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Na(16), one Na(7), one Cd(1), and one Cd(7) atom. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Na(12), one Na(15), one Na(3), one Na(8), and one Cd(4) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Na(10) and one Na(2) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one Na(12), one Na(2), and one Cd(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Na(11) and one Cd(7) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one Na(13), one Na(4), one Na(6), one Cd(2), and one Cd(5) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Na(14), one Na(2), one Na(5), and one Cd(6) atom. In the twelfth O site, O(12) is bonded in a 4-coordinate geometry to one Na(10), one Na(16), one Na(4), and one Na(7) atom. In the thirteenth O site, O(13) is bonded in a square co-planar geometry to one Na(15), one Na(6), one Cd(1), and one Cd(6) atom. In the fourteenth O site, O(14) is bonded in a 7-coordinate geometry to one Na(1), one Na(6), one Na(8), one Na(9), one Cd(1), one Cd(2), and one Cd(7) atom. In the fifteenth O site, O(15) is bonded in a 3-coordinate geometry to one Na(12), one Na(7), and one Na(8) atom. In the sixteenth O site, O(16) is bonded in a 4-coordinate geometry to one Na(10), one Na(11), one Na(13), and one Na(8) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2CdO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.388
_cell_length_b   9.402
_cell_length_c   9.409
_cell_angle_alpha   109.665
_cell_angle_beta   109.353
_cell_angle_gamma   109.287
_symmetry_Int_Tables_number   1
_cell_volume   640.180
_cell_formula_units_Z   8
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
  Na  Na0  1  0.579  0.811  0.455  1.0
  Na  Na1  1  0.501  0.992  0.732  1.0
  Na  Na2  1  0.180  0.442  0.047  1.0
  Na  Na3  1  0.977  0.707  0.034  1.0
  Na  Na4  1  0.000  0.536  0.225  1.0
  Na  Na5  1  0.813  0.804  0.230  1.0
  Na  Na6  1  0.813  0.580  0.467  1.0
  Na  Na7  1  0.472  0.521  0.257  1.0
  Na  Na8  1  0.297  0.755  0.233  1.0
  Na  Na9  1  0.764  0.807  0.736  1.0
  Na  Na10  1  0.212  0.172  0.278  1.0
  Na  Na11  1  0.441  0.216  0.009  1.0
  Na  Na12  1  0.541  0.491  0.737  1.0
  Na  Na13  1  0.197  0.413  0.535  1.0
  Na  Na14  1  0.199  0.203  0.767  1.0
  Na  Na15  1  0.002  0.467  0.774  1.0
  Cd  Cd16  1  0.760  0.030  0.505  1.0
  Cd  Cd17  1  0.545  0.767  0.997  1.0
  Cd  Cd18  1  0.688  0.237  0.768  1.0
  Cd  Cd19  1  0.040  0.300  0.961  1.0
  Cd  Cd20  1  0.814  0.559  0.954  1.0
  Cd  Cd21  1  0.243  0.982  0.487  1.0
  Cd  Cd22  1  0.476  0.986  0.277  1.0
  Cd  Cd23  1  0.429  0.195  0.543  1.0
  O  O24  1  0.328  0.550  0.714  1.0
  O  O25  1  0.476  0.218  0.750  1.0
  O  O26  1  0.978  0.483  0.006  1.0
  O  O27  1  0.035  0.283  0.254  1.0
  O  O28  1  0.771  0.298  0.472  1.0
  O  O29  1  0.276  0.316  0.968  1.0
  O  O30  1  0.678  0.966  0.792  1.0
  O  O31  1  0.515  0.007  0.988  1.0
  O  O32  1  0.338  0.048  0.208  1.0
  O  O33  1  0.723  0.689  0.025  1.0
  O  O34  1  0.210  0.695  0.530  1.0
  O  O35  1  0.983  0.733  0.744  1.0
  O  O36  1  0.002  0.005  0.500  1.0
  O  O37  1  0.550  0.808  0.239  1.0
  O  O38  1  0.654  0.436  0.300  1.0
  O  O39  1  0.500  0.490  0.503  1.0
[/CIF]
.