The structure described by Cd2SO6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted CdO6 octahedra that share corners with two equivalent Cd(2)O6 pentagonal pyramids, corners with three equivalent S(1)O4 tetrahedra,  an edgeedge with one Cd(1)O6 octahedra, and edges with two equivalent Cd(2)O6 pentagonal pyramids. In the second Cd site, Cd(2) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(6) atoms to form distorted CdO6 pentagonal pyramids that share corners with two equivalent Cd(1)O6 octahedra, corners with three equivalent S(1)O4 tetrahedra, edges with two equivalent Cd(1)O6 octahedra, and  an edgeedge with one Cd(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 51-54°. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with three equivalent Cd(1)O6 octahedra and corners with three equivalent Cd(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 46-51°. There are six inequivalent O sites. In the first O site, O(6) is bonded in a trigonal non-coplanar geometry to one Cd(1) and two equivalent Cd(2) atoms. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one S(1) atom. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one S(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one S(1) atom. In the fifth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one S(1) atom. In the sixth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Cd(2) and two equivalent Cd(1) atoms. is represented by the CIF file [CIF]
data_Cd2SO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.400
_cell_length_b   7.018
_cell_length_c   11.818
_cell_angle_alpha   60.206
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   532.598
_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
  Cd  Cd0  1  0.028  0.155  0.824  1.0
  Cd  Cd1  1  0.472  0.155  0.324  1.0
  Cd  Cd2  1  0.972  0.845  0.176  1.0
  Cd  Cd3  1  0.528  0.845  0.676  1.0
  Cd  Cd4  1  0.165  0.317  0.496  1.0
  Cd  Cd5  1  0.335  0.317  0.996  1.0
  Cd  Cd6  1  0.835  0.683  0.504  1.0
  Cd  Cd7  1  0.665  0.683  0.004  1.0
  S  S8  1  0.503  0.693  0.280  1.0
  S  S9  1  0.997  0.693  0.780  1.0
  S  S10  1  0.497  0.307  0.720  1.0
  S  S11  1  0.003  0.307  0.220  1.0
  O  O12  1  0.440  0.461  0.363  1.0
  O  O13  1  0.060  0.461  0.863  1.0
  O  O14  1  0.560  0.539  0.637  1.0
  O  O15  1  0.940  0.539  0.137  1.0
  O  O16  1  0.484  0.763  0.140  1.0
  O  O17  1  0.016  0.763  0.640  1.0
  O  O18  1  0.516  0.237  0.860  1.0
  O  O19  1  0.984  0.237  0.360  1.0
  O  O20  1  0.699  0.706  0.310  1.0
  O  O21  1  0.801  0.706  0.810  1.0
  O  O22  1  0.301  0.294  0.690  1.0
  O  O23  1  0.199  0.294  0.190  1.0
  O  O24  1  0.392  0.837  0.312  1.0
  O  O25  1  0.108  0.837  0.812  1.0
  O  O26  1  0.608  0.163  0.688  1.0
  O  O27  1  0.892  0.163  0.188  1.0
  O  O28  1  0.172  0.035  0.018  1.0
  O  O29  1  0.328  0.035  0.518  1.0
  O  O30  1  0.828  0.965  0.982  1.0
  O  O31  1  0.672  0.965  0.482  1.0
  O  O32  1  0.937  0.336  0.619  1.0
  O  O33  1  0.563  0.336  0.119  1.0
  O  O34  1  0.063  0.664  0.381  1.0
  O  O35  1  0.437  0.664  0.881  1.0
[/CIF]
.
The structure described by Cd2SO6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to one O(1), one O(3), one O(4), one O(6), and two equivalent O(5) atoms to form distorted CdO6 octahedra that share corners with two equivalent Cd(2)O6 pentagonal pyramids, corners with three equivalent S(1)O4 tetrahedra,  an edgeedge with one Cd(1)O6 octahedra, and edges with two equivalent Cd(2)O6 pentagonal pyramids. In the second Cd site, Cd(2) is bonded to one O(1), one O(2), one O(3), one O(5), and two equivalent O(6) atoms to form distorted CdO6 pentagonal pyramids that share corners with two equivalent Cd(1)O6 octahedra, corners with three equivalent S(1)O4 tetrahedra, edges with two equivalent Cd(1)O6 octahedra, and  an edgeedge with one Cd(2)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 51-54°. S(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SO4 tetrahedra that share corners with three equivalent Cd(1)O6 octahedra and corners with three equivalent Cd(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 46-51°. There are six inequivalent O sites. In the first O site, O(6) is bonded in a trigonal non-coplanar geometry to one Cd(1) and two equivalent Cd(2) atoms. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one S(1) atom. In the third O site, O(2) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one S(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one S(1) atom. In the fifth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Cd(1) and one S(1) atom. In the sixth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Cd(2) and two equivalent Cd(1) atoms. is represented by the CIF file [CIF]
data_Cd2SO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.400
_cell_length_b   7.018
_cell_length_c   11.818
_cell_angle_alpha   60.206
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   532.598
_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
  Cd  Cd0  1  0.028  0.155  0.824  1.0
  Cd  Cd1  1  0.472  0.155  0.324  1.0
  Cd  Cd2  1  0.972  0.845  0.176  1.0
  Cd  Cd3  1  0.528  0.845  0.676  1.0
  Cd  Cd4  1  0.165  0.317  0.496  1.0
  Cd  Cd5  1  0.335  0.317  0.996  1.0
  Cd  Cd6  1  0.835  0.683  0.504  1.0
  Cd  Cd7  1  0.665  0.683  0.004  1.0
  S  S8  1  0.503  0.693  0.280  1.0
  S  S9  1  0.997  0.693  0.780  1.0
  S  S10  1  0.497  0.307  0.720  1.0
  S  S11  1  0.003  0.307  0.220  1.0
  O  O12  1  0.440  0.461  0.363  1.0
  O  O13  1  0.060  0.461  0.863  1.0
  O  O14  1  0.560  0.539  0.637  1.0
  O  O15  1  0.940  0.539  0.137  1.0
  O  O16  1  0.484  0.763  0.140  1.0
  O  O17  1  0.016  0.763  0.640  1.0
  O  O18  1  0.516  0.237  0.860  1.0
  O  O19  1  0.984  0.237  0.360  1.0
  O  O20  1  0.699  0.706  0.310  1.0
  O  O21  1  0.801  0.706  0.810  1.0
  O  O22  1  0.301  0.294  0.690  1.0
  O  O23  1  0.199  0.294  0.190  1.0
  O  O24  1  0.392  0.837  0.312  1.0
  O  O25  1  0.108  0.837  0.812  1.0
  O  O26  1  0.608  0.163  0.688  1.0
  O  O27  1  0.892  0.163  0.188  1.0
  O  O28  1  0.172  0.035  0.018  1.0
  O  O29  1  0.328  0.035  0.518  1.0
  O  O30  1  0.828  0.965  0.982  1.0
  O  O31  1  0.672  0.965  0.482  1.0
  O  O32  1  0.937  0.336  0.619  1.0
  O  O33  1  0.563  0.336  0.119  1.0
  O  O34  1  0.063  0.664  0.381  1.0
  O  O35  1  0.437  0.664  0.881  1.0
[/CIF]
.