The compound described by CsSeO4 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), three equivalent O(2), and three equivalent O(4) atoms. Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cs(1) and one Se(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Se(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Se(1) atom. is represented by the CIF card [CIF]
data_CsSeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.570
_cell_length_b   8.145
_cell_length_c   8.756
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   107.659
_symmetry_Int_Tables_number   1
_cell_volume   514.437
_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
  Cs  Cs0  1  0.705  0.212  0.373  1.0
  Cs  Cs1  1  0.795  0.788  0.873  1.0
  Cs  Cs2  1  0.295  0.788  0.627  1.0
  Cs  Cs3  1  0.205  0.212  0.127  1.0
  Se  Se4  1  0.782  0.741  0.363  1.0
  Se  Se5  1  0.718  0.259  0.863  1.0
  Se  Se6  1  0.218  0.259  0.637  1.0
  Se  Se7  1  0.282  0.741  0.137  1.0
  O  O8  1  0.620  0.571  0.281  1.0
  O  O9  1  0.880  0.429  0.781  1.0
  O  O10  1  0.380  0.429  0.719  1.0
  O  O11  1  0.120  0.571  0.219  1.0
  O  O12  1  0.867  0.898  0.239  1.0
  O  O13  1  0.633  0.102  0.739  1.0
  O  O14  1  0.133  0.102  0.761  1.0
  O  O15  1  0.367  0.898  0.261  1.0
  O  O16  1  0.947  0.653  0.427  1.0
  O  O17  1  0.553  0.347  0.927  1.0
  O  O18  1  0.053  0.347  0.573  1.0
  O  O19  1  0.447  0.653  0.073  1.0
  O  O20  1  0.701  0.809  0.520  1.0
  O  O21  1  0.799  0.191  0.020  1.0
  O  O22  1  0.299  0.191  0.480  1.0
  O  O23  1  0.201  0.809  0.980  1.0
[/CIF]
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The compound described by CsSeO4 crystallizes in the monoclinic P2_1/c space group. Cs(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), three equivalent O(2), and three equivalent O(4) atoms. Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Cs(1) and one Se(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Se(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Cs(1) and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one Se(1) atom. is represented by the CIF card [CIF]
data_CsSeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.570
_cell_length_b   8.145
_cell_length_c   8.756
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   107.659
_symmetry_Int_Tables_number   1
_cell_volume   514.437
_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
  Cs  Cs0  1  0.705  0.212  0.373  1.0
  Cs  Cs1  1  0.795  0.788  0.873  1.0
  Cs  Cs2  1  0.295  0.788  0.627  1.0
  Cs  Cs3  1  0.205  0.212  0.127  1.0
  Se  Se4  1  0.782  0.741  0.363  1.0
  Se  Se5  1  0.718  0.259  0.863  1.0
  Se  Se6  1  0.218  0.259  0.637  1.0
  Se  Se7  1  0.282  0.741  0.137  1.0
  O  O8  1  0.620  0.571  0.281  1.0
  O  O9  1  0.880  0.429  0.781  1.0
  O  O10  1  0.380  0.429  0.719  1.0
  O  O11  1  0.120  0.571  0.219  1.0
  O  O12  1  0.867  0.898  0.239  1.0
  O  O13  1  0.633  0.102  0.739  1.0
  O  O14  1  0.133  0.102  0.761  1.0
  O  O15  1  0.367  0.898  0.261  1.0
  O  O16  1  0.947  0.653  0.427  1.0
  O  O17  1  0.553  0.347  0.927  1.0
  O  O18  1  0.053  0.347  0.573  1.0
  O  O19  1  0.447  0.653  0.073  1.0
  O  O20  1  0.701  0.809  0.520  1.0
  O  O21  1  0.799  0.191  0.020  1.0
  O  O22  1  0.299  0.191  0.480  1.0
  O  O23  1  0.201  0.809  0.980  1.0
[/CIF]
.