The structure described by Cd3Se3O10 crystallizes in the monoclinic P2_1 space group. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(6), one O(9), and two equivalent O(2) atoms. In the third Cd site, Cd(3) is bonded to one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted CdO5 trigonal bipyramids that share corners with two equivalent Se(3)O4 tetrahedra. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted T-shaped geometry to one O(1), one O(4), and one O(5) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(3), and one O(6) atom. In the third Se site, Se(3) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form SeO4 tetrahedra that share corners with two equivalent Cd(3)O5 trigonal bipyramids. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one Cd(2), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Cd(2) and one Se(2) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Cd(1), one Cd(2), and one Se(2) atom. In the fourth O site, O(4) is bonded to one Cd(3), two equivalent Cd(1), and one Se(1) atom to form distorted corner-sharing OCd3Se tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Cd(3), two equivalent Cd(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cd(2), one Cd(3), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Cd(3) and one Se(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Cd(3) and one Se(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one Se(3) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Cd(1) and one Se(3) atom. is represented by the CIF file [CIF]
data_Cd3Se3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.384
_cell_length_b   8.342
_cell_length_c   10.836
_cell_angle_alpha   71.272
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   460.903
_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
  Cd  Cd0  1  0.749  0.996  0.873  1.0
  Cd  Cd1  1  0.249  0.004  0.127  1.0
  Cd  Cd2  1  0.739  0.971  0.386  1.0
  Cd  Cd3  1  0.239  0.029  0.614  1.0
  Cd  Cd4  1  0.269  0.363  0.800  1.0
  Cd  Cd5  1  0.769  0.637  0.200  1.0
  Se  Se6  1  0.773  0.253  0.046  1.0
  Se  Se7  1  0.273  0.747  0.954  1.0
  Se  Se8  1  0.716  0.274  0.570  1.0
  Se  Se9  1  0.216  0.726  0.430  1.0
  Se  Se10  1  0.756  0.655  0.717  1.0
  Se  Se11  1  0.256  0.345  0.283  1.0
  O  O12  1  0.864  0.088  0.178  1.0
  O  O13  1  0.364  0.912  0.822  1.0
  O  O14  1  0.611  0.119  0.511  1.0
  O  O15  1  0.111  0.881  0.489  1.0
  O  O16  1  0.926  0.162  0.687  1.0
  O  O17  1  0.426  0.839  0.313  1.0
  O  O18  1  0.541  0.160  0.980  1.0
  O  O19  1  0.041  0.840  0.020  1.0
  O  O20  1  0.010  0.221  0.950  1.0
  O  O21  1  0.510  0.779  0.050  1.0
  O  O22  1  0.461  0.260  0.667  1.0
  O  O23  1  0.961  0.740  0.333  1.0
  O  O24  1  0.962  0.528  0.681  1.0
  O  O25  1  0.462  0.472  0.319  1.0
  O  O26  1  0.564  0.538  0.833  1.0
  O  O27  1  0.064  0.462  0.167  1.0
  O  O28  1  0.591  0.752  0.587  1.0
  O  O29  1  0.091  0.248  0.413  1.0
  O  O30  1  0.901  0.788  0.777  1.0
  O  O31  1  0.401  0.212  0.223  1.0
[/CIF]
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The structure described by Cd3Se3O10 crystallizes in the monoclinic P2_1 space group. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(3), two equivalent O(4), and two equivalent O(5) atoms. In the second Cd site, Cd(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(6), one O(9), and two equivalent O(2) atoms. In the third Cd site, Cd(3) is bonded to one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted CdO5 trigonal bipyramids that share corners with two equivalent Se(3)O4 tetrahedra. There are three inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted T-shaped geometry to one O(1), one O(4), and one O(5) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(3), and one O(6) atom. In the third Se site, Se(3) is bonded to one O(10), one O(7), one O(8), and one O(9) atom to form SeO4 tetrahedra that share corners with two equivalent Cd(3)O5 trigonal bipyramids. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Cd(1), one Cd(2), and one Se(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Cd(2) and one Se(2) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Cd(1), one Cd(2), and one Se(2) atom. In the fourth O site, O(4) is bonded to one Cd(3), two equivalent Cd(1), and one Se(1) atom to form distorted corner-sharing OCd3Se tetrahedra. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Cd(3), two equivalent Cd(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cd(2), one Cd(3), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Cd(3) and one Se(3) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Cd(3) and one Se(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 120 degrees geometry to one Cd(2) and one Se(3) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Cd(1) and one Se(3) atom. is represented by the CIF file [CIF]
data_Cd3Se3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.384
_cell_length_b   8.342
_cell_length_c   10.836
_cell_angle_alpha   71.272
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   460.903
_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
  Cd  Cd0  1  0.749  0.996  0.873  1.0
  Cd  Cd1  1  0.249  0.004  0.127  1.0
  Cd  Cd2  1  0.739  0.971  0.386  1.0
  Cd  Cd3  1  0.239  0.029  0.614  1.0
  Cd  Cd4  1  0.269  0.363  0.800  1.0
  Cd  Cd5  1  0.769  0.637  0.200  1.0
  Se  Se6  1  0.773  0.253  0.046  1.0
  Se  Se7  1  0.273  0.747  0.954  1.0
  Se  Se8  1  0.716  0.274  0.570  1.0
  Se  Se9  1  0.216  0.726  0.430  1.0
  Se  Se10  1  0.756  0.655  0.717  1.0
  Se  Se11  1  0.256  0.345  0.283  1.0
  O  O12  1  0.864  0.088  0.178  1.0
  O  O13  1  0.364  0.912  0.822  1.0
  O  O14  1  0.611  0.119  0.511  1.0
  O  O15  1  0.111  0.881  0.489  1.0
  O  O16  1  0.926  0.162  0.687  1.0
  O  O17  1  0.426  0.839  0.313  1.0
  O  O18  1  0.541  0.160  0.980  1.0
  O  O19  1  0.041  0.840  0.020  1.0
  O  O20  1  0.010  0.221  0.950  1.0
  O  O21  1  0.510  0.779  0.050  1.0
  O  O22  1  0.461  0.260  0.667  1.0
  O  O23  1  0.961  0.740  0.333  1.0
  O  O24  1  0.962  0.528  0.681  1.0
  O  O25  1  0.462  0.472  0.319  1.0
  O  O26  1  0.564  0.538  0.833  1.0
  O  O27  1  0.064  0.462  0.167  1.0
  O  O28  1  0.591  0.752  0.587  1.0
  O  O29  1  0.091  0.248  0.413  1.0
  O  O30  1  0.901  0.788  0.777  1.0
  O  O31  1  0.401  0.212  0.223  1.0
[/CIF]
.