The compound described by (Hg2SeO4)12O2 crystallizes in the trigonal R-3 space group. The structure consists of three water atoms inside a Hg2SeO4 framework. In the Hg2SeO4 framework, there are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted linear geometry to one O(1) and two equivalent O(4) atoms. In the second Hg site, Hg(2) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 2-coordinate geometry to one Hg(2) and one Se(1) atom. In the second O site, O(4) is bonded to two equivalent Hg(1) and two equivalent Hg(2) atoms to form corner-sharing OHg4 tetrahedra. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Hg(1), two equivalent Hg(2), and one Se(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Hg(2) and one Se(1) atom. is represented by the CIF card [CIF]
data_Hg12Se6O25
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.693
_cell_length_b   9.693
_cell_length_c   9.693
_cell_angle_alpha   107.960
_cell_angle_beta   107.960
_cell_angle_gamma   107.960
_symmetry_Int_Tables_number   1
_cell_volume   737.592
_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
  Hg  Hg0  1  0.255  0.840  0.889  1.0
  Hg  Hg1  1  0.889  0.255  0.840  1.0
  Hg  Hg2  1  0.840  0.889  0.255  1.0
  Hg  Hg3  1  0.745  0.160  0.111  1.0
  Hg  Hg4  1  0.111  0.745  0.160  1.0
  Hg  Hg5  1  0.160  0.111  0.745  1.0
  Hg  Hg6  1  0.014  0.327  0.544  1.0
  Hg  Hg7  1  0.544  0.014  0.327  1.0
  Hg  Hg8  1  0.327  0.544  0.014  1.0
  Hg  Hg9  1  0.986  0.673  0.456  1.0
  Hg  Hg10  1  0.456  0.986  0.673  1.0
  Hg  Hg11  1  0.673  0.456  0.986  1.0
  Se  Se12  1  0.661  0.791  0.503  1.0
  Se  Se13  1  0.503  0.661  0.791  1.0
  Se  Se14  1  0.791  0.503  0.661  1.0
  Se  Se15  1  0.339  0.209  0.497  1.0
  Se  Se16  1  0.497  0.339  0.209  1.0
  Se  Se17  1  0.209  0.497  0.339  1.0
  O  O18  1  0.976  0.586  0.652  1.0
  O  O19  1  0.652  0.976  0.586  1.0
  O  O20  1  0.586  0.652  0.976  1.0
  O  O21  1  0.024  0.414  0.348  1.0
  O  O22  1  0.348  0.024  0.414  1.0
  O  O23  1  0.414  0.348  0.024  1.0
  O  O24  1  0.301  0.572  0.745  1.0
  O  O25  1  0.745  0.301  0.572  1.0
  O  O26  1  0.572  0.745  0.301  1.0
  O  O27  1  0.699  0.428  0.255  1.0
  O  O28  1  0.255  0.699  0.428  1.0
  O  O29  1  0.428  0.255  0.699  1.0
  O  O30  1  0.862  0.858  0.547  1.0
  O  O31  1  0.547  0.862  0.858  1.0
  O  O32  1  0.858  0.547  0.862  1.0
  O  O33  1  0.138  0.142  0.453  1.0
  O  O34  1  0.453  0.138  0.142  1.0
  O  O35  1  0.142  0.453  0.138  1.0
  O  O36  1  0.223  0.918  0.705  1.0
  O  O37  1  0.705  0.223  0.918  1.0
  O  O38  1  0.918  0.705  0.223  1.0
  O  O39  1  0.777  0.082  0.295  1.0
  O  O40  1  0.295  0.777  0.082  1.0
  O  O41  1  0.082  0.295  0.777  1.0
  O  O42  1  0.000  0.000  0.000  1.0
[/CIF]
.
The compound described by (Hg2SeO4)12O2 crystallizes in the trigonal R-3 space group. The structure consists of three water atoms inside a Hg2SeO4 framework. In the Hg2SeO4 framework, there are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted linear geometry to one O(1) and two equivalent O(4) atoms. In the second Hg site, Hg(2) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 2-coordinate geometry to one Hg(2) and one Se(1) atom. In the second O site, O(4) is bonded to two equivalent Hg(1) and two equivalent Hg(2) atoms to form corner-sharing OHg4 tetrahedra. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Hg(1), two equivalent Hg(2), and one Se(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Hg(2) and one Se(1) atom. is represented by the CIF card [CIF]
data_Hg12Se6O25
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.693
_cell_length_b   9.693
_cell_length_c   9.693
_cell_angle_alpha   107.960
_cell_angle_beta   107.960
_cell_angle_gamma   107.960
_symmetry_Int_Tables_number   1
_cell_volume   737.592
_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
  Hg  Hg0  1  0.255  0.840  0.889  1.0
  Hg  Hg1  1  0.889  0.255  0.840  1.0
  Hg  Hg2  1  0.840  0.889  0.255  1.0
  Hg  Hg3  1  0.745  0.160  0.111  1.0
  Hg  Hg4  1  0.111  0.745  0.160  1.0
  Hg  Hg5  1  0.160  0.111  0.745  1.0
  Hg  Hg6  1  0.014  0.327  0.544  1.0
  Hg  Hg7  1  0.544  0.014  0.327  1.0
  Hg  Hg8  1  0.327  0.544  0.014  1.0
  Hg  Hg9  1  0.986  0.673  0.456  1.0
  Hg  Hg10  1  0.456  0.986  0.673  1.0
  Hg  Hg11  1  0.673  0.456  0.986  1.0
  Se  Se12  1  0.661  0.791  0.503  1.0
  Se  Se13  1  0.503  0.661  0.791  1.0
  Se  Se14  1  0.791  0.503  0.661  1.0
  Se  Se15  1  0.339  0.209  0.497  1.0
  Se  Se16  1  0.497  0.339  0.209  1.0
  Se  Se17  1  0.209  0.497  0.339  1.0
  O  O18  1  0.976  0.586  0.652  1.0
  O  O19  1  0.652  0.976  0.586  1.0
  O  O20  1  0.586  0.652  0.976  1.0
  O  O21  1  0.024  0.414  0.348  1.0
  O  O22  1  0.348  0.024  0.414  1.0
  O  O23  1  0.414  0.348  0.024  1.0
  O  O24  1  0.301  0.572  0.745  1.0
  O  O25  1  0.745  0.301  0.572  1.0
  O  O26  1  0.572  0.745  0.301  1.0
  O  O27  1  0.699  0.428  0.255  1.0
  O  O28  1  0.255  0.699  0.428  1.0
  O  O29  1  0.428  0.255  0.699  1.0
  O  O30  1  0.862  0.858  0.547  1.0
  O  O31  1  0.547  0.862  0.858  1.0
  O  O32  1  0.858  0.547  0.862  1.0
  O  O33  1  0.138  0.142  0.453  1.0
  O  O34  1  0.453  0.138  0.142  1.0
  O  O35  1  0.142  0.453  0.138  1.0
  O  O36  1  0.223  0.918  0.705  1.0
  O  O37  1  0.705  0.223  0.918  1.0
  O  O38  1  0.918  0.705  0.223  1.0
  O  O39  1  0.777  0.082  0.295  1.0
  O  O40  1  0.295  0.777  0.082  1.0
  O  O41  1  0.082  0.295  0.777  1.0
  O  O42  1  0.000  0.000  0.000  1.0
[/CIF]
.