The crystal structure described by Rb3Hg20 crystallizes in the cubic Pm-3n space group. Rb(1) is bonded in a 8-coordinate geometry to four equivalent Hg(2) and four equivalent Hg(3) atoms. There are four inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a 4-coordinate geometry to one Hg(1), one Hg(2), one Hg(4), and two equivalent Hg(3) atoms. In the second Hg site, Hg(2) is bonded in a distorted body-centered cubic geometry to four equivalent Rb(1) and four equivalent Hg(1) atoms. In the third Hg site, Hg(3) is bonded in a 9-coordinate geometry to three equivalent Rb(1) and six equivalent Hg(1) atoms. In the fourth Hg site, Hg(4) is bonded in a cuboctahedral geometry to twelve equivalent Hg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3Hg20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.570
_cell_length_b   11.570
_cell_length_c   11.570
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1548.636
_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  0.000  0.250  0.500  1.0
  Rb  Rb1  1  0.500  0.000  0.250  1.0
  Rb  Rb2  1  0.500  0.000  0.750  1.0
  Rb  Rb3  1  0.750  0.500  0.000  1.0
  Rb  Rb4  1  0.250  0.500  0.000  1.0
  Rb  Rb5  1  0.000  0.750  0.500  1.0
  Hg  Hg6  1  0.867  0.000  0.741  1.0
  Hg  Hg7  1  0.633  0.241  0.500  1.0
  Hg  Hg8  1  0.367  0.241  0.500  1.0
  Hg  Hg9  1  0.367  0.759  0.500  1.0
  Hg  Hg10  1  0.750  0.000  0.500  1.0
  Hg  Hg11  1  0.500  0.633  0.241  1.0
  Hg  Hg12  1  0.741  0.867  0.000  1.0
  Hg  Hg13  1  0.250  0.250  0.250  1.0
  Hg  Hg14  1  0.259  0.133  0.000  1.0
  Hg  Hg15  1  0.500  0.250  0.000  1.0
  Hg  Hg16  1  0.500  0.367  0.241  1.0
  Hg  Hg17  1  0.250  0.750  0.750  1.0
  Hg  Hg18  1  0.000  0.259  0.867  1.0
  Hg  Hg19  1  0.741  0.133  0.000  1.0
  Hg  Hg20  1  0.133  0.000  0.259  1.0
  Hg  Hg21  1  0.500  0.633  0.759  1.0
  Hg  Hg22  1  0.250  0.750  0.250  1.0
  Hg  Hg23  1  0.759  0.500  0.633  1.0
  Hg  Hg24  1  0.250  0.000  0.500  1.0
  Hg  Hg25  1  0.241  0.500  0.367  1.0
  Hg  Hg26  1  0.241  0.500  0.633  1.0
  Hg  Hg27  1  0.750  0.750  0.250  1.0
  Hg  Hg28  1  0.000  0.259  0.133  1.0
  Hg  Hg29  1  0.633  0.759  0.500  1.0
  Hg  Hg30  1  0.250  0.250  0.750  1.0
  Hg  Hg31  1  0.000  0.000  0.000  1.0
  Hg  Hg32  1  0.500  0.367  0.759  1.0
  Hg  Hg33  1  0.259  0.867  0.000  1.0
  Hg  Hg34  1  0.750  0.250  0.750  1.0
  Hg  Hg35  1  0.000  0.500  0.750  1.0
  Hg  Hg36  1  0.000  0.500  0.250  1.0
  Hg  Hg37  1  0.000  0.741  0.133  1.0
  Hg  Hg38  1  0.750  0.250  0.250  1.0
  Hg  Hg39  1  0.759  0.500  0.367  1.0
  Hg  Hg40  1  0.500  0.750  0.000  1.0
  Hg  Hg41  1  0.500  0.500  0.500  1.0
  Hg  Hg42  1  0.000  0.741  0.867  1.0
  Hg  Hg43  1  0.867  0.000  0.259  1.0
  Hg  Hg44  1  0.750  0.750  0.750  1.0
  Hg  Hg45  1  0.133  0.000  0.741  1.0
[/CIF]
.
The crystal structure described by Rb3Hg20 crystallizes in the cubic Pm-3n space group. Rb(1) is bonded in a 8-coordinate geometry to four equivalent Hg(2) and four equivalent Hg(3) atoms. There are four inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a 4-coordinate geometry to one Hg(1), one Hg(2), one Hg(4), and two equivalent Hg(3) atoms. In the second Hg site, Hg(2) is bonded in a distorted body-centered cubic geometry to four equivalent Rb(1) and four equivalent Hg(1) atoms. In the third Hg site, Hg(3) is bonded in a 9-coordinate geometry to three equivalent Rb(1) and six equivalent Hg(1) atoms. In the fourth Hg site, Hg(4) is bonded in a cuboctahedral geometry to twelve equivalent Hg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb3Hg20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.570
_cell_length_b   11.570
_cell_length_c   11.570
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1548.636
_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  0.000  0.250  0.500  1.0
  Rb  Rb1  1  0.500  0.000  0.250  1.0
  Rb  Rb2  1  0.500  0.000  0.750  1.0
  Rb  Rb3  1  0.750  0.500  0.000  1.0
  Rb  Rb4  1  0.250  0.500  0.000  1.0
  Rb  Rb5  1  0.000  0.750  0.500  1.0
  Hg  Hg6  1  0.867  0.000  0.741  1.0
  Hg  Hg7  1  0.633  0.241  0.500  1.0
  Hg  Hg8  1  0.367  0.241  0.500  1.0
  Hg  Hg9  1  0.367  0.759  0.500  1.0
  Hg  Hg10  1  0.750  0.000  0.500  1.0
  Hg  Hg11  1  0.500  0.633  0.241  1.0
  Hg  Hg12  1  0.741  0.867  0.000  1.0
  Hg  Hg13  1  0.250  0.250  0.250  1.0
  Hg  Hg14  1  0.259  0.133  0.000  1.0
  Hg  Hg15  1  0.500  0.250  0.000  1.0
  Hg  Hg16  1  0.500  0.367  0.241  1.0
  Hg  Hg17  1  0.250  0.750  0.750  1.0
  Hg  Hg18  1  0.000  0.259  0.867  1.0
  Hg  Hg19  1  0.741  0.133  0.000  1.0
  Hg  Hg20  1  0.133  0.000  0.259  1.0
  Hg  Hg21  1  0.500  0.633  0.759  1.0
  Hg  Hg22  1  0.250  0.750  0.250  1.0
  Hg  Hg23  1  0.759  0.500  0.633  1.0
  Hg  Hg24  1  0.250  0.000  0.500  1.0
  Hg  Hg25  1  0.241  0.500  0.367  1.0
  Hg  Hg26  1  0.241  0.500  0.633  1.0
  Hg  Hg27  1  0.750  0.750  0.250  1.0
  Hg  Hg28  1  0.000  0.259  0.133  1.0
  Hg  Hg29  1  0.633  0.759  0.500  1.0
  Hg  Hg30  1  0.250  0.250  0.750  1.0
  Hg  Hg31  1  0.000  0.000  0.000  1.0
  Hg  Hg32  1  0.500  0.367  0.759  1.0
  Hg  Hg33  1  0.259  0.867  0.000  1.0
  Hg  Hg34  1  0.750  0.250  0.750  1.0
  Hg  Hg35  1  0.000  0.500  0.750  1.0
  Hg  Hg36  1  0.000  0.500  0.250  1.0
  Hg  Hg37  1  0.000  0.741  0.133  1.0
  Hg  Hg38  1  0.750  0.250  0.250  1.0
  Hg  Hg39  1  0.759  0.500  0.367  1.0
  Hg  Hg40  1  0.500  0.750  0.000  1.0
  Hg  Hg41  1  0.500  0.500  0.500  1.0
  Hg  Hg42  1  0.000  0.741  0.867  1.0
  Hg  Hg43  1  0.867  0.000  0.259  1.0
  Hg  Hg44  1  0.750  0.750  0.750  1.0
  Hg  Hg45  1  0.133  0.000  0.741  1.0
[/CIF]
.