The compound described by Rb3(SeO4)2 crystallizes in the trigonal R-3m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(2) and nine equivalent O(1) atoms. Se(1) is bonded in a tetrahedral geometry to one O(2) and three equivalent O(1) atoms. There are two inequivalent O sites. In the first 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 second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2) and one Se(1) atom. is represented by the CIF file [CIF]
data_Rb3(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.439
_cell_length_b   8.439
_cell_length_c   8.439
_cell_angle_alpha   42.985
_cell_angle_beta   42.985
_cell_angle_gamma   42.985
_symmetry_Int_Tables_number   1
_cell_volume   253.198
_cell_formula_units_Z   1
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  0.000  0.000  0.000  1.0
  Rb  Rb1  1  0.796  0.796  0.796  1.0
  Rb  Rb2  1  0.204  0.204  0.204  1.0
  Se  Se3  1  0.591  0.591  0.591  1.0
  Se  Se4  1  0.409  0.409  0.409  1.0
  O  O5  1  0.284  0.729  0.284  1.0
  O  O6  1  0.284  0.284  0.729  1.0
  O  O7  1  0.729  0.284  0.284  1.0
  O  O8  1  0.716  0.271  0.716  1.0
  O  O9  1  0.716  0.716  0.271  1.0
  O  O10  1  0.271  0.716  0.716  1.0
  O  O11  1  0.664  0.664  0.664  1.0
  O  O12  1  0.336  0.336  0.336  1.0
[/CIF]
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The compound described by Rb3(SeO4)2 crystallizes in the trigonal R-3m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to six equivalent O(1) atoms. In the second Rb site, Rb(2) is bonded in a 10-coordinate geometry to one O(2) and nine equivalent O(1) atoms. Se(1) is bonded in a tetrahedral geometry to one O(2) and three equivalent O(1) atoms. There are two inequivalent O sites. In the first 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 second O site, O(2) is bonded in a distorted single-bond geometry to one Rb(2) and one Se(1) atom. is represented by the CIF file [CIF]
data_Rb3(SeO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.439
_cell_length_b   8.439
_cell_length_c   8.439
_cell_angle_alpha   42.985
_cell_angle_beta   42.985
_cell_angle_gamma   42.985
_symmetry_Int_Tables_number   1
_cell_volume   253.198
_cell_formula_units_Z   1
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  0.000  0.000  0.000  1.0
  Rb  Rb1  1  0.796  0.796  0.796  1.0
  Rb  Rb2  1  0.204  0.204  0.204  1.0
  Se  Se3  1  0.591  0.591  0.591  1.0
  Se  Se4  1  0.409  0.409  0.409  1.0
  O  O5  1  0.284  0.729  0.284  1.0
  O  O6  1  0.284  0.284  0.729  1.0
  O  O7  1  0.729  0.284  0.284  1.0
  O  O8  1  0.716  0.271  0.716  1.0
  O  O9  1  0.716  0.716  0.271  1.0
  O  O10  1  0.271  0.716  0.716  1.0
  O  O11  1  0.664  0.664  0.664  1.0
  O  O12  1  0.336  0.336  0.336  1.0
[/CIF]
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