The material structure described by Na2SO5 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(1) and four equivalent O(2) atoms. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. S(1) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(2) and two equivalent Na(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one S(1) atom. is represented by the CIF file [CIF]
data_Na2SO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.897
_cell_length_b   7.897
_cell_length_c   5.653
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   131.272
_symmetry_Int_Tables_number   1
_cell_volume   264.934
_cell_formula_units_Z   2
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  0.000  0.000  0.500  1.0
  Na  Na1  1  0.000  0.000  0.000  1.0
  Na  Na2  1  0.305  0.695  0.750  1.0
  Na  Na3  1  0.695  0.305  0.250  1.0
  S  S4  1  0.817  0.183  0.750  1.0
  S  S5  1  0.183  0.817  0.250  1.0
  O  O6  1  0.860  0.140  0.250  1.0
  O  O7  1  0.140  0.860  0.750  1.0
  O  O8  1  0.682  0.960  0.928  1.0
  O  O9  1  0.960  0.682  0.072  1.0
  O  O10  1  0.682  0.960  0.572  1.0
  O  O11  1  0.960  0.682  0.428  1.0
  O  O12  1  0.318  0.040  0.072  1.0
  O  O13  1  0.040  0.318  0.928  1.0
  O  O14  1  0.318  0.040  0.428  1.0
  O  O15  1  0.040  0.318  0.572  1.0
[/CIF]
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The material structure described by Na2SO5 crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted hexagonal planar geometry to two equivalent O(1) and four equivalent O(2) atoms. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(1) and four equivalent O(2) atoms. S(1) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(2) and two equivalent Na(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one S(1) atom. is represented by the CIF file [CIF]
data_Na2SO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.897
_cell_length_b   7.897
_cell_length_c   5.653
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   131.272
_symmetry_Int_Tables_number   1
_cell_volume   264.934
_cell_formula_units_Z   2
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  0.000  0.000  0.500  1.0
  Na  Na1  1  0.000  0.000  0.000  1.0
  Na  Na2  1  0.305  0.695  0.750  1.0
  Na  Na3  1  0.695  0.305  0.250  1.0
  S  S4  1  0.817  0.183  0.750  1.0
  S  S5  1  0.183  0.817  0.250  1.0
  O  O6  1  0.860  0.140  0.250  1.0
  O  O7  1  0.140  0.860  0.750  1.0
  O  O8  1  0.682  0.960  0.928  1.0
  O  O9  1  0.960  0.682  0.072  1.0
  O  O10  1  0.682  0.960  0.572  1.0
  O  O11  1  0.960  0.682  0.428  1.0
  O  O12  1  0.318  0.040  0.072  1.0
  O  O13  1  0.040  0.318  0.928  1.0
  O  O14  1  0.318  0.040  0.428  1.0
  O  O15  1  0.040  0.318  0.572  1.0
[/CIF]
.