The compound described by Rb3(SeO4)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(3), three equivalent O(1), and three equivalent O(2) 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(4) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Se(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Se(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Se(1) atom. In the fourth O site, O(3) is bonded in a 1-coordinate geometry to one Rb(1), two equivalent Rb(2), and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.192
_cell_length_b   8.559
_cell_length_c   10.613
_cell_angle_alpha   101.561
_cell_angle_beta   90.000
_cell_angle_gamma   111.205
_symmetry_Int_Tables_number   1
_cell_volume   512.127
_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
  Rb  Rb0  1  0.753  0.000  0.750  1.0
  Rb  Rb1  1  0.247  0.000  0.250  1.0
  Rb  Rb2  1  0.418  0.387  0.652  1.0
  Rb  Rb3  1  0.582  0.613  0.348  1.0
  Rb  Rb4  1  0.031  0.613  0.848  1.0
  Rb  Rb5  1  0.969  0.387  0.152  1.0
  Se  Se6  1  0.401  0.229  0.964  1.0
  Se  Se7  1  0.599  0.771  0.036  1.0
  Se  Se8  1  0.172  0.771  0.536  1.0
  Se  Se9  1  0.828  0.229  0.464  1.0
  O  O10  1  0.570  0.690  0.878  1.0
  O  O11  1  0.430  0.310  0.122  1.0
  O  O12  1  0.880  0.310  0.622  1.0
  O  O13  1  0.120  0.690  0.378  1.0
  O  O14  1  0.648  0.308  0.895  1.0
  O  O15  1  0.352  0.692  0.105  1.0
  O  O16  1  0.339  0.692  0.605  1.0
  O  O17  1  0.661  0.308  0.395  1.0
  O  O18  1  0.181  0.257  0.891  1.0
  O  O19  1  0.819  0.743  0.109  1.0
  O  O20  1  0.924  0.743  0.609  1.0
  O  O21  1  0.076  0.257  0.391  1.0
  O  O22  1  0.321  0.011  0.940  1.0
  O  O23  1  0.679  0.989  0.060  1.0
  O  O24  1  0.310  0.989  0.560  1.0
  O  O25  1  0.690  0.011  0.440  1.0
[/CIF]
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The compound described by Rb3(SeO4)2 crystallizes in the monoclinic C2/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 10-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and four equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(3), three equivalent O(1), and three equivalent O(2) 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(4) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Se(1) atom. In the second O site, O(1) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Se(1) atom. In the third O site, O(2) is bonded in a distorted single-bond geometry to one Rb(1), three equivalent Rb(2), and one Se(1) atom. In the fourth O site, O(3) is bonded in a 1-coordinate geometry to one Rb(1), two equivalent Rb(2), and one Se(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.192
_cell_length_b   8.559
_cell_length_c   10.613
_cell_angle_alpha   101.561
_cell_angle_beta   90.000
_cell_angle_gamma   111.205
_symmetry_Int_Tables_number   1
_cell_volume   512.127
_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
  Rb  Rb0  1  0.753  0.000  0.750  1.0
  Rb  Rb1  1  0.247  0.000  0.250  1.0
  Rb  Rb2  1  0.418  0.387  0.652  1.0
  Rb  Rb3  1  0.582  0.613  0.348  1.0
  Rb  Rb4  1  0.031  0.613  0.848  1.0
  Rb  Rb5  1  0.969  0.387  0.152  1.0
  Se  Se6  1  0.401  0.229  0.964  1.0
  Se  Se7  1  0.599  0.771  0.036  1.0
  Se  Se8  1  0.172  0.771  0.536  1.0
  Se  Se9  1  0.828  0.229  0.464  1.0
  O  O10  1  0.570  0.690  0.878  1.0
  O  O11  1  0.430  0.310  0.122  1.0
  O  O12  1  0.880  0.310  0.622  1.0
  O  O13  1  0.120  0.690  0.378  1.0
  O  O14  1  0.648  0.308  0.895  1.0
  O  O15  1  0.352  0.692  0.105  1.0
  O  O16  1  0.339  0.692  0.605  1.0
  O  O17  1  0.661  0.308  0.395  1.0
  O  O18  1  0.181  0.257  0.891  1.0
  O  O19  1  0.819  0.743  0.109  1.0
  O  O20  1  0.924  0.743  0.609  1.0
  O  O21  1  0.076  0.257  0.391  1.0
  O  O22  1  0.321  0.011  0.940  1.0
  O  O23  1  0.679  0.989  0.060  1.0
  O  O24  1  0.310  0.989  0.560  1.0
  O  O25  1  0.690  0.011  0.440  1.0
[/CIF]
.