The compound described by Na2SO4 crystallizes in the orthorhombic Fddd space group. Na(1) is bonded to six equivalent O(1) atoms to form distorted NaO6 pentagonal pyramids that share corners with four equivalent Na(1)O6 pentagonal pyramids, corners with four equivalent S(1)O4 tetrahedra, edges with four equivalent Na(1)O6 pentagonal pyramids, and  an edgeedge with one S(1)O4 tetrahedra. S(1) is bonded to four equivalent O(1) atoms to form SO4 tetrahedra that share corners with eight equivalent Na(1)O6 pentagonal pyramids and edges with two equivalent Na(1)O6 pentagonal pyramids. O(1) is bonded in a 4-coordinate geometry to three equivalent Na(1) and one S(1) atom. is represented by the CIF card [CIF]
data_Na2SO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.655
_cell_length_b   5.655
_cell_length_c   6.761
_cell_angle_alpha   102.806
_cell_angle_beta   102.806
_cell_angle_gamma   118.035
_symmetry_Int_Tables_number   1
_cell_volume   172.242
_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  0.560  0.440  0.250  1.0
  Na  Na1  1  0.190  0.810  0.250  1.0
  Na  Na2  1  0.810  0.190  0.750  1.0
  Na  Na3  1  0.440  0.560  0.750  1.0
  S  S4  1  0.875  0.125  0.250  1.0
  S  S5  1  0.125  0.875  0.750  1.0
  O  O6  1  0.250  0.180  0.887  1.0
  O  O7  1  0.293  0.863  0.613  1.0
  O  O8  1  0.820  0.750  0.613  1.0
  O  O9  1  0.137  0.707  0.887  1.0
  O  O10  1  0.750  0.820  0.113  1.0
  O  O11  1  0.707  0.137  0.387  1.0
  O  O12  1  0.863  0.293  0.113  1.0
  O  O13  1  0.180  0.250  0.387  1.0
[/CIF]
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The compound described by Na2SO4 crystallizes in the orthorhombic Fddd space group. Na(1) is bonded to six equivalent O(1) atoms to form distorted NaO6 pentagonal pyramids that share corners with four equivalent Na(1)O6 pentagonal pyramids, corners with four equivalent S(1)O4 tetrahedra, edges with four equivalent Na(1)O6 pentagonal pyramids, and  an edgeedge with one S(1)O4 tetrahedra. S(1) is bonded to four equivalent O(1) atoms to form SO4 tetrahedra that share corners with eight equivalent Na(1)O6 pentagonal pyramids and edges with two equivalent Na(1)O6 pentagonal pyramids. O(1) is bonded in a 4-coordinate geometry to three equivalent Na(1) and one S(1) atom. is represented by the CIF card [CIF]
data_Na2SO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.655
_cell_length_b   5.655
_cell_length_c   6.761
_cell_angle_alpha   102.806
_cell_angle_beta   102.806
_cell_angle_gamma   118.035
_symmetry_Int_Tables_number   1
_cell_volume   172.242
_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  0.560  0.440  0.250  1.0
  Na  Na1  1  0.190  0.810  0.250  1.0
  Na  Na2  1  0.810  0.190  0.750  1.0
  Na  Na3  1  0.440  0.560  0.750  1.0
  S  S4  1  0.875  0.125  0.250  1.0
  S  S5  1  0.125  0.875  0.750  1.0
  O  O6  1  0.250  0.180  0.887  1.0
  O  O7  1  0.293  0.863  0.613  1.0
  O  O8  1  0.820  0.750  0.613  1.0
  O  O9  1  0.137  0.707  0.887  1.0
  O  O10  1  0.750  0.820  0.113  1.0
  O  O11  1  0.707  0.137  0.387  1.0
  O  O12  1  0.863  0.293  0.113  1.0
  O  O13  1  0.180  0.250  0.387  1.0
[/CIF]
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