The material structure described by Na2SeO2 crystallizes in the orthorhombic Fddd space group. Na(1) is bonded in a 5-coordinate geometry to three equivalent Se(1) and two equivalent O(1) atoms. Se(1) is bonded in a 8-coordinate geometry to six equivalent Na(1) and two equivalent O(1) atoms. O(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Se(1), and one O(1) atom. is represented by the CIF file [CIF]
data_Na2SeO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.710
_cell_length_b   8.710
_cell_length_c   8.850
_cell_angle_alpha   121.562
_cell_angle_beta   121.562
_cell_angle_gamma   86.348
_symmetry_Int_Tables_number   1
_cell_volume   466.599
_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
  Na  Na0  1  0.347  0.082  0.718  1.0
  Na  Na1  1  0.371  0.635  0.718  1.0
  Na  Na2  1  0.918  0.653  0.282  1.0
  Na  Na3  1  0.903  0.668  0.782  1.0
  Na  Na4  1  0.365  0.629  0.282  1.0
  Na  Na5  1  0.879  0.115  0.782  1.0
  Na  Na6  1  0.332  0.097  0.218  1.0
  Na  Na7  1  0.885  0.121  0.218  1.0
  Se  Se8  1  0.625  0.875  0.750  1.0
  Se  Se9  1  0.125  0.875  0.750  1.0
  Se  Se10  1  0.125  0.375  0.250  1.0
  Se  Se11  1  0.125  0.875  0.250  1.0
  O  O12  1  0.693  0.701  0.881  1.0
  O  O13  1  0.187  0.180  0.881  1.0
  O  O14  1  0.299  0.307  0.119  1.0
  O  O15  1  0.557  0.049  0.619  1.0
  O  O16  1  0.820  0.813  0.119  1.0
  O  O17  1  0.063  0.570  0.619  1.0
  O  O18  1  0.951  0.443  0.381  1.0
  O  O19  1  0.430  0.937  0.381  1.0
[/CIF]
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The material structure described by Na2SeO2 crystallizes in the orthorhombic Fddd space group. Na(1) is bonded in a 5-coordinate geometry to three equivalent Se(1) and two equivalent O(1) atoms. Se(1) is bonded in a 8-coordinate geometry to six equivalent Na(1) and two equivalent O(1) atoms. O(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Se(1), and one O(1) atom. is represented by the CIF file [CIF]
data_Na2SeO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.710
_cell_length_b   8.710
_cell_length_c   8.850
_cell_angle_alpha   121.562
_cell_angle_beta   121.562
_cell_angle_gamma   86.348
_symmetry_Int_Tables_number   1
_cell_volume   466.599
_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
  Na  Na0  1  0.347  0.082  0.718  1.0
  Na  Na1  1  0.371  0.635  0.718  1.0
  Na  Na2  1  0.918  0.653  0.282  1.0
  Na  Na3  1  0.903  0.668  0.782  1.0
  Na  Na4  1  0.365  0.629  0.282  1.0
  Na  Na5  1  0.879  0.115  0.782  1.0
  Na  Na6  1  0.332  0.097  0.218  1.0
  Na  Na7  1  0.885  0.121  0.218  1.0
  Se  Se8  1  0.625  0.875  0.750  1.0
  Se  Se9  1  0.125  0.875  0.750  1.0
  Se  Se10  1  0.125  0.375  0.250  1.0
  Se  Se11  1  0.125  0.875  0.250  1.0
  O  O12  1  0.693  0.701  0.881  1.0
  O  O13  1  0.187  0.180  0.881  1.0
  O  O14  1  0.299  0.307  0.119  1.0
  O  O15  1  0.557  0.049  0.619  1.0
  O  O16  1  0.820  0.813  0.119  1.0
  O  O17  1  0.063  0.570  0.619  1.0
  O  O18  1  0.951  0.443  0.381  1.0
  O  O19  1  0.430  0.937  0.381  1.0
[/CIF]
.