The structure described by K2SO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. S(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), three equivalent K(2), and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), three equivalent K(2), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(2), three equivalent K(1), and one S(1) atom. is represented by the CIF file [CIF]
data_K2SO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.737
_cell_length_b   7.430
_cell_length_c   10.016
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   426.889
_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  0.750  0.009  0.703  1.0
  K  K1  1  0.250  0.991  0.297  1.0
  K  K2  1  0.750  0.509  0.797  1.0
  K  K3  1  0.250  0.491  0.203  1.0
  K  K4  1  0.250  0.670  0.588  1.0
  K  K5  1  0.750  0.330  0.412  1.0
  K  K6  1  0.250  0.170  0.912  1.0
  K  K7  1  0.750  0.830  0.088  1.0
  S  S8  1  0.250  0.232  0.581  1.0
  S  S9  1  0.750  0.768  0.419  1.0
  S  S10  1  0.250  0.732  0.919  1.0
  S  S11  1  0.750  0.268  0.081  1.0
  O  O12  1  0.539  0.701  0.350  1.0
  O  O13  1  0.039  0.299  0.650  1.0
  O  O14  1  0.961  0.201  0.150  1.0
  O  O15  1  0.461  0.799  0.850  1.0
  O  O16  1  0.461  0.299  0.650  1.0
  O  O17  1  0.961  0.701  0.350  1.0
  O  O18  1  0.039  0.799  0.850  1.0
  O  O19  1  0.539  0.201  0.150  1.0
  O  O20  1  0.250  0.302  0.442  1.0
  O  O21  1  0.750  0.698  0.558  1.0
  O  O22  1  0.250  0.802  0.058  1.0
  O  O23  1  0.750  0.198  0.942  1.0
  O  O24  1  0.750  0.467  0.081  1.0
  O  O25  1  0.250  0.533  0.919  1.0
  O  O26  1  0.750  0.967  0.419  1.0
  O  O27  1  0.250  0.033  0.581  1.0
[/CIF]
.
The structure described by K2SO4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to two equivalent O(2), three equivalent O(3), and four equivalent O(1) atoms. In the second K site, K(2) is bonded in a 10-coordinate geometry to one O(3), three equivalent O(2), and six equivalent O(1) atoms. S(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), three equivalent K(2), and one S(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to two equivalent K(1), three equivalent K(2), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one K(2), three equivalent K(1), and one S(1) atom. is represented by the CIF file [CIF]
data_K2SO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.737
_cell_length_b   7.430
_cell_length_c   10.016
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   426.889
_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  0.750  0.009  0.703  1.0
  K  K1  1  0.250  0.991  0.297  1.0
  K  K2  1  0.750  0.509  0.797  1.0
  K  K3  1  0.250  0.491  0.203  1.0
  K  K4  1  0.250  0.670  0.588  1.0
  K  K5  1  0.750  0.330  0.412  1.0
  K  K6  1  0.250  0.170  0.912  1.0
  K  K7  1  0.750  0.830  0.088  1.0
  S  S8  1  0.250  0.232  0.581  1.0
  S  S9  1  0.750  0.768  0.419  1.0
  S  S10  1  0.250  0.732  0.919  1.0
  S  S11  1  0.750  0.268  0.081  1.0
  O  O12  1  0.539  0.701  0.350  1.0
  O  O13  1  0.039  0.299  0.650  1.0
  O  O14  1  0.961  0.201  0.150  1.0
  O  O15  1  0.461  0.799  0.850  1.0
  O  O16  1  0.461  0.299  0.650  1.0
  O  O17  1  0.961  0.701  0.350  1.0
  O  O18  1  0.039  0.799  0.850  1.0
  O  O19  1  0.539  0.201  0.150  1.0
  O  O20  1  0.250  0.302  0.442  1.0
  O  O21  1  0.750  0.698  0.558  1.0
  O  O22  1  0.250  0.802  0.058  1.0
  O  O23  1  0.750  0.198  0.942  1.0
  O  O24  1  0.750  0.467  0.081  1.0
  O  O25  1  0.250  0.533  0.919  1.0
  O  O26  1  0.750  0.967  0.419  1.0
  O  O27  1  0.250  0.033  0.581  1.0
[/CIF]
.