The material described by Dy2(SeO4)3 crystallizes in the monoclinic C2/c space group. Dy(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(5), one O(6), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a tetrahedral geometry to one O(2), one O(4), one O(5), and one O(6) atom. In the second Se site, Se(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(3) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one Se(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Dy(1) and one Se(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Dy(1) and one Se(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one Se(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Dy(1) and one Se(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one Se(1) atom. is represented by the CIF file [CIF]
data_Dy2(SeO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.731
_cell_length_b   6.731
_cell_length_c   11.175
_cell_angle_alpha   80.472
_cell_angle_beta   80.472
_cell_angle_gamma   116.869
_symmetry_Int_Tables_number   1
_cell_volume   428.498
_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
  Dy  Dy0  1  0.706  0.957  0.594  1.0
  Dy  Dy1  1  0.957  0.706  0.094  1.0
  Dy  Dy2  1  0.043  0.294  0.906  1.0
  Dy  Dy3  1  0.294  0.043  0.406  1.0
  Se  Se4  1  0.528  0.789  0.924  1.0
  Se  Se5  1  0.789  0.528  0.424  1.0
  Se  Se6  1  0.118  0.882  0.750  1.0
  Se  Se7  1  0.882  0.118  0.250  1.0
  Se  Se8  1  0.211  0.472  0.576  1.0
  Se  Se9  1  0.472  0.211  0.076  1.0
  O  O10  1  0.209  0.127  0.788  1.0
  O  O11  1  0.582  0.974  0.790  1.0
  O  O12  1  0.077  0.682  0.877  1.0
  O  O13  1  0.786  0.887  0.957  1.0
  O  O14  1  0.127  0.209  0.288  1.0
  O  O15  1  0.465  0.574  0.606  1.0
  O  O16  1  0.768  0.336  0.543  1.0
  O  O17  1  0.664  0.232  0.957  1.0
  O  O18  1  0.426  0.535  0.894  1.0
  O  O19  1  0.974  0.582  0.290  1.0
  O  O20  1  0.113  0.214  0.543  1.0
  O  O21  1  0.318  0.923  0.623  1.0
  O  O22  1  0.682  0.077  0.377  1.0
  O  O23  1  0.887  0.786  0.457  1.0
  O  O24  1  0.026  0.418  0.710  1.0
  O  O25  1  0.574  0.465  0.106  1.0
  O  O26  1  0.336  0.768  0.043  1.0
  O  O27  1  0.232  0.664  0.457  1.0
  O  O28  1  0.535  0.426  0.394  1.0
  O  O29  1  0.873  0.791  0.712  1.0
  O  O30  1  0.214  0.113  0.043  1.0
  O  O31  1  0.923  0.318  0.123  1.0
  O  O32  1  0.418  0.026  0.210  1.0
  O  O33  1  0.791  0.873  0.212  1.0
[/CIF]
.
The material described by Dy2(SeO4)3 crystallizes in the monoclinic C2/c space group. Dy(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(5), one O(6), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a tetrahedral geometry to one O(2), one O(4), one O(5), and one O(6) atom. In the second Se site, Se(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(3) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one Se(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Dy(1) and one Se(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Dy(1) and one Se(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Dy(1) and one Se(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Dy(1) and one Se(1) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Dy(1) and one Se(1) atom. is represented by the CIF file [CIF]
data_Dy2(SeO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.731
_cell_length_b   6.731
_cell_length_c   11.175
_cell_angle_alpha   80.472
_cell_angle_beta   80.472
_cell_angle_gamma   116.869
_symmetry_Int_Tables_number   1
_cell_volume   428.498
_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
  Dy  Dy0  1  0.706  0.957  0.594  1.0
  Dy  Dy1  1  0.957  0.706  0.094  1.0
  Dy  Dy2  1  0.043  0.294  0.906  1.0
  Dy  Dy3  1  0.294  0.043  0.406  1.0
  Se  Se4  1  0.528  0.789  0.924  1.0
  Se  Se5  1  0.789  0.528  0.424  1.0
  Se  Se6  1  0.118  0.882  0.750  1.0
  Se  Se7  1  0.882  0.118  0.250  1.0
  Se  Se8  1  0.211  0.472  0.576  1.0
  Se  Se9  1  0.472  0.211  0.076  1.0
  O  O10  1  0.209  0.127  0.788  1.0
  O  O11  1  0.582  0.974  0.790  1.0
  O  O12  1  0.077  0.682  0.877  1.0
  O  O13  1  0.786  0.887  0.957  1.0
  O  O14  1  0.127  0.209  0.288  1.0
  O  O15  1  0.465  0.574  0.606  1.0
  O  O16  1  0.768  0.336  0.543  1.0
  O  O17  1  0.664  0.232  0.957  1.0
  O  O18  1  0.426  0.535  0.894  1.0
  O  O19  1  0.974  0.582  0.290  1.0
  O  O20  1  0.113  0.214  0.543  1.0
  O  O21  1  0.318  0.923  0.623  1.0
  O  O22  1  0.682  0.077  0.377  1.0
  O  O23  1  0.887  0.786  0.457  1.0
  O  O24  1  0.026  0.418  0.710  1.0
  O  O25  1  0.574  0.465  0.106  1.0
  O  O26  1  0.336  0.768  0.043  1.0
  O  O27  1  0.232  0.664  0.457  1.0
  O  O28  1  0.535  0.426  0.394  1.0
  O  O29  1  0.873  0.791  0.712  1.0
  O  O30  1  0.214  0.113  0.043  1.0
  O  O31  1  0.923  0.318  0.123  1.0
  O  O32  1  0.418  0.026  0.210  1.0
  O  O33  1  0.791  0.873  0.212  1.0
[/CIF]
.