The structure described by Rb2Hg(BSe)9 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one Se(2), one Se(5), one Se(6), one Se(7), one Se(9), two equivalent Se(3), and two equivalent Se(8) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Se(2), one Se(5), one Se(6), one Se(7), two equivalent Se(1), and two equivalent Se(4) atoms. Hg(1) is bonded in a distorted trigonal planar geometry to one Se(7), one Se(8), and one Se(9) atom. There are nine inequivalent B sites. In the first B site, B(1) is bonded in a distorted single-bond geometry to one B(2), one B(3), one B(4), one B(5), one B(6), and one Se(1) atom. In the second B site, B(2) is bonded in a 6-coordinate geometry to one B(1), one B(3), one B(4), one B(5), one B(6), and one Se(2) atom. In the third B site, B(3) is bonded in a distorted single-bond geometry to one B(1), one B(2), one B(4), one B(5), one B(6), and one Se(3) atom. In the fourth B site, B(4) is bonded in a 6-coordinate geometry to one B(1), one B(2), one B(3), one B(5), one B(6), and one Se(4) atom. In the fifth B site, B(5) is bonded in a 6-coordinate geometry to one B(1), one B(2), one B(3), one B(4), one B(6), and one Se(5) atom. In the sixth B site, B(6) is bonded in a distorted single-bond geometry to one B(1), one B(2), one B(3), one B(4), one B(5), and one Se(6) atom. In the seventh B site, B(7) is bonded in a trigonal planar geometry to one Se(1), one Se(2), and one Se(7) atom. In the eighth B site, B(8) is bonded in a trigonal planar geometry to one Se(3), one Se(4), and one Se(8) atom. In the ninth B site, B(9) is bonded in a trigonal planar geometry to one Se(5), one Se(6), and one Se(9) atom. There are nine inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted L-shaped geometry to two equivalent Rb(2), one B(1), and one B(7) atom. In the second Se site, Se(2) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one B(2), and one B(7) atom. In the third Se site, Se(3) is bonded in a distorted L-shaped geometry to two equivalent Rb(1), one B(3), and one B(8) atom. In the fourth Se site, Se(4) is bonded in a distorted L-shaped geometry to two equivalent Rb(2), one B(4), and one B(8) atom. In the fifth Se site, Se(5) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one B(5), and one B(9) atom. In the sixth Se site, Se(6) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one B(6), and one B(9) atom. In the seventh Se site, Se(7) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Hg(1), and one B(7) atom. In the eighth Se site, Se(8) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Hg(1), and one B(8) atom. In the ninth Se site, Se(9) is bonded in a 2-coordinate geometry to one Rb(1), one Hg(1), and one B(9) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Hg(BSe)9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.974
_cell_length_b   10.751
_cell_length_c   11.318
_cell_angle_alpha   100.143
_cell_angle_beta   90.631
_cell_angle_gamma   116.290
_symmetry_Int_Tables_number   1
_cell_volume   1065.722
_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  0.792  0.174  0.002  1.0
  Rb  Rb1  1  0.208  0.826  0.998  1.0
  Rb  Rb2  1  0.176  0.344  0.504  1.0
  Rb  Rb3  1  0.824  0.656  0.496  1.0
  Hg  Hg4  1  0.325  0.318  0.075  1.0
  Hg  Hg5  1  0.675  0.682  0.925  1.0
  B  B6  1  0.516  0.163  0.552  1.0
  B  B7  1  0.484  0.837  0.448  1.0
  B  B8  1  0.662  0.120  0.586  1.0
  B  B9  1  0.338  0.880  0.414  1.0
  B  B10  1  0.486  0.042  0.648  1.0
  B  B11  1  0.514  0.958  0.352  1.0
  B  B12  1  0.339  0.008  0.539  1.0
  B  B13  1  0.661  0.992  0.461  1.0
  B  B14  1  0.424  0.064  0.406  1.0
  B  B15  1  0.576  0.936  0.594  1.0
  B  B16  1  0.621  0.132  0.436  1.0
  B  B17  1  0.379  0.868  0.564  1.0
  B  B18  1  0.751  0.415  0.714  1.0
  B  B19  1  0.249  0.585  0.286  1.0
  B  B20  1  0.251  0.087  0.780  1.0
  B  B21  1  0.749  0.913  0.220  1.0
  B  B22  1  0.570  0.284  0.261  1.0
  B  B23  1  0.430  0.716  0.739  1.0
  Se  Se24  1  0.556  0.362  0.627  1.0
  Se  Se25  1  0.444  0.638  0.373  1.0
  Se  Se26  1  0.839  0.280  0.694  1.0
  Se  Se27  1  0.161  0.720  0.306  1.0
  Se  Se28  1  0.447  0.095  0.819  1.0
  Se  Se29  1  0.553  0.905  0.181  1.0
  Se  Se30  1  0.163  0.029  0.610  1.0
  Se  Se31  1  0.837  0.971  0.390  1.0
  Se  Se32  1  0.363  0.157  0.290  1.0
  Se  Se33  1  0.637  0.843  0.710  1.0
  Se  Se34  1  0.744  0.287  0.348  1.0
  Se  Se35  1  0.256  0.713  0.652  1.0
  Se  Se36  1  0.869  0.601  0.814  1.0
  Se  Se37  1  0.131  0.399  0.186  1.0
  Se  Se38  1  0.130  0.122  0.901  1.0
  Se  Se39  1  0.870  0.878  0.099  1.0
  Se  Se40  1  0.608  0.407  0.145  1.0
  Se  Se41  1  0.392  0.593  0.855  1.0
[/CIF]
.
The structure described by Rb2Hg(BSe)9 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 9-coordinate geometry to one Se(2), one Se(5), one Se(6), one Se(7), one Se(9), two equivalent Se(3), and two equivalent Se(8) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Se(2), one Se(5), one Se(6), one Se(7), two equivalent Se(1), and two equivalent Se(4) atoms. Hg(1) is bonded in a distorted trigonal planar geometry to one Se(7), one Se(8), and one Se(9) atom. There are nine inequivalent B sites. In the first B site, B(1) is bonded in a distorted single-bond geometry to one B(2), one B(3), one B(4), one B(5), one B(6), and one Se(1) atom. In the second B site, B(2) is bonded in a 6-coordinate geometry to one B(1), one B(3), one B(4), one B(5), one B(6), and one Se(2) atom. In the third B site, B(3) is bonded in a distorted single-bond geometry to one B(1), one B(2), one B(4), one B(5), one B(6), and one Se(3) atom. In the fourth B site, B(4) is bonded in a 6-coordinate geometry to one B(1), one B(2), one B(3), one B(5), one B(6), and one Se(4) atom. In the fifth B site, B(5) is bonded in a 6-coordinate geometry to one B(1), one B(2), one B(3), one B(4), one B(6), and one Se(5) atom. In the sixth B site, B(6) is bonded in a distorted single-bond geometry to one B(1), one B(2), one B(3), one B(4), one B(5), and one Se(6) atom. In the seventh B site, B(7) is bonded in a trigonal planar geometry to one Se(1), one Se(2), and one Se(7) atom. In the eighth B site, B(8) is bonded in a trigonal planar geometry to one Se(3), one Se(4), and one Se(8) atom. In the ninth B site, B(9) is bonded in a trigonal planar geometry to one Se(5), one Se(6), and one Se(9) atom. There are nine inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted L-shaped geometry to two equivalent Rb(2), one B(1), and one B(7) atom. In the second Se site, Se(2) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one B(2), and one B(7) atom. In the third Se site, Se(3) is bonded in a distorted L-shaped geometry to two equivalent Rb(1), one B(3), and one B(8) atom. In the fourth Se site, Se(4) is bonded in a distorted L-shaped geometry to two equivalent Rb(2), one B(4), and one B(8) atom. In the fifth Se site, Se(5) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one B(5), and one B(9) atom. In the sixth Se site, Se(6) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one B(6), and one B(9) atom. In the seventh Se site, Se(7) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(2), one Hg(1), and one B(7) atom. In the eighth Se site, Se(8) is bonded in a 2-coordinate geometry to two equivalent Rb(1), one Hg(1), and one B(8) atom. In the ninth Se site, Se(9) is bonded in a 2-coordinate geometry to one Rb(1), one Hg(1), and one B(9) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Hg(BSe)9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.974
_cell_length_b   10.751
_cell_length_c   11.318
_cell_angle_alpha   100.143
_cell_angle_beta   90.631
_cell_angle_gamma   116.290
_symmetry_Int_Tables_number   1
_cell_volume   1065.722
_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  0.792  0.174  0.002  1.0
  Rb  Rb1  1  0.208  0.826  0.998  1.0
  Rb  Rb2  1  0.176  0.344  0.504  1.0
  Rb  Rb3  1  0.824  0.656  0.496  1.0
  Hg  Hg4  1  0.325  0.318  0.075  1.0
  Hg  Hg5  1  0.675  0.682  0.925  1.0
  B  B6  1  0.516  0.163  0.552  1.0
  B  B7  1  0.484  0.837  0.448  1.0
  B  B8  1  0.662  0.120  0.586  1.0
  B  B9  1  0.338  0.880  0.414  1.0
  B  B10  1  0.486  0.042  0.648  1.0
  B  B11  1  0.514  0.958  0.352  1.0
  B  B12  1  0.339  0.008  0.539  1.0
  B  B13  1  0.661  0.992  0.461  1.0
  B  B14  1  0.424  0.064  0.406  1.0
  B  B15  1  0.576  0.936  0.594  1.0
  B  B16  1  0.621  0.132  0.436  1.0
  B  B17  1  0.379  0.868  0.564  1.0
  B  B18  1  0.751  0.415  0.714  1.0
  B  B19  1  0.249  0.585  0.286  1.0
  B  B20  1  0.251  0.087  0.780  1.0
  B  B21  1  0.749  0.913  0.220  1.0
  B  B22  1  0.570  0.284  0.261  1.0
  B  B23  1  0.430  0.716  0.739  1.0
  Se  Se24  1  0.556  0.362  0.627  1.0
  Se  Se25  1  0.444  0.638  0.373  1.0
  Se  Se26  1  0.839  0.280  0.694  1.0
  Se  Se27  1  0.161  0.720  0.306  1.0
  Se  Se28  1  0.447  0.095  0.819  1.0
  Se  Se29  1  0.553  0.905  0.181  1.0
  Se  Se30  1  0.163  0.029  0.610  1.0
  Se  Se31  1  0.837  0.971  0.390  1.0
  Se  Se32  1  0.363  0.157  0.290  1.0
  Se  Se33  1  0.637  0.843  0.710  1.0
  Se  Se34  1  0.744  0.287  0.348  1.0
  Se  Se35  1  0.256  0.713  0.652  1.0
  Se  Se36  1  0.869  0.601  0.814  1.0
  Se  Se37  1  0.131  0.399  0.186  1.0
  Se  Se38  1  0.130  0.122  0.901  1.0
  Se  Se39  1  0.870  0.878  0.099  1.0
  Se  Se40  1  0.608  0.407  0.145  1.0
  Se  Se41  1  0.392  0.593  0.855  1.0
[/CIF]
.