The crystal structure described by Rh18B11 crystallizes in the triclinic P1 space group. There are eighteen inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to one B(3), one B(4), one B(7), and one B(8) atom to form distorted edge-sharing RhB4 tetrahedra. In the second Rh site, Rh(2) is bonded to one B(3), one B(4), one B(7), and one B(8) atom to form distorted edge-sharing RhB4 tetrahedra. In the third Rh site, Rh(3) is bonded in a 4-coordinate geometry to one B(10), one B(5), one B(7), and one B(8) atom. In the fourth Rh site, Rh(4) is bonded in a 4-coordinate geometry to one B(6), one B(7), one B(8), and one B(9) atom. In the fifth Rh site, Rh(5) is bonded in a 4-coordinate geometry to one B(10), one B(11), one B(4), and one B(5) atom. In the sixth Rh site, Rh(6) is bonded in a 3-coordinate geometry to one B(11), one B(3), one B(6), and one B(9) atom. In the seventh Rh site, Rh(7) is bonded in a 3-coordinate geometry to one B(1), one B(10), and one B(2) atom. In the eighth Rh site, Rh(8) is bonded in a 4-coordinate geometry to one B(1), one B(11), one B(2), and one B(9) atom. In the ninth Rh site, Rh(9) is bonded in a distorted water-like geometry to one B(10), one B(2), and one B(4) atom. In the tenth Rh site, Rh(10) is bonded in a distorted T-shaped geometry to one B(11), one B(3), and one B(9) atom. In the eleventh Rh site, Rh(11) is bonded in a 4-coordinate geometry to one B(5), one B(6), one B(7), and one B(9) atom. In the twelfth Rh site, Rh(12) is bonded in a 4-coordinate geometry to one B(10), one B(5), one B(6), and one B(8) atom. In the thirteenth Rh site, Rh(13) is bonded in a 5-coordinate geometry to one B(1), one B(2), one B(4), one B(5), and one B(7) atom. In the fourteenth Rh site, Rh(14) is bonded in a 5-coordinate geometry to one B(1), one B(2), one B(3), one B(6), and one B(8) atom. In the fifteenth Rh site, Rh(15) is bonded in a 5-coordinate geometry to one B(10), one B(2), one B(4), one B(5), and one B(7) atom. In the sixteenth Rh site, Rh(16) is bonded in a 5-coordinate geometry to one B(1), one B(3), one B(6), one B(8), and one B(9) atom. In the seventeenth Rh site, Rh(17) is bonded in a 4-coordinate geometry to one B(1), one B(10), one B(11), one B(2), and one B(5) atom. In the eighteenth Rh site, Rh(18) is bonded in a 3-coordinate geometry to one B(1), one B(11), one B(2), one B(6), and one B(9) atom. There are eleven inequivalent B sites. In the first B site, B(1) is bonded in a 8-coordinate geometry to one Rh(13), one Rh(14), one Rh(16), one Rh(17), one Rh(18), one Rh(7), one Rh(8), and one B(2) atom. In the second B site, B(2) is bonded in a 9-coordinate geometry to one Rh(13), one Rh(14), one Rh(15), one Rh(17), one Rh(18), one Rh(7), one Rh(8), one Rh(9), and one B(1) atom. In the third B site, B(3) is bonded in a 6-coordinate geometry to one Rh(1), one Rh(10), one Rh(14), one Rh(16), one Rh(2), and one Rh(6) atom. In the fourth B site, B(4) is bonded in a 6-coordinate geometry to one Rh(1), one Rh(13), one Rh(15), one Rh(2), one Rh(5), and one Rh(9) atom. In the fifth B site, B(5) is bonded in a 8-coordinate geometry to one Rh(11), one Rh(12), one Rh(13), one Rh(15), one Rh(17), one Rh(3), one Rh(5), and one B(10) atom. In the sixth B site, B(6) is bonded in a 8-coordinate geometry to one Rh(11), one Rh(12), one Rh(14), one Rh(16), one Rh(18), one Rh(4), one Rh(6), and one B(9) atom. In the seventh B site, B(7) is bonded in a 7-coordinate geometry to one Rh(1), one Rh(11), one Rh(13), one Rh(15), one Rh(2), one Rh(3), and one Rh(4) atom. In the eighth B site, B(8) is bonded in a 7-coordinate geometry to one Rh(1), one Rh(12), one Rh(14), one Rh(16), one Rh(2), one Rh(3), and one Rh(4) atom. In the ninth B site, B(9) is bonded in a 9-coordinate geometry to one Rh(10), one Rh(11), one Rh(16), one Rh(18), one Rh(4), one Rh(6), one Rh(8), one B(11), and one B(6) atom. In the tenth B site, B(10) is bonded in a 8-coordinate geometry to one Rh(12), one Rh(15), one Rh(17), one Rh(3), one Rh(5), one Rh(7), one Rh(9), and one B(5) atom. In the eleventh B site, B(11) is bonded in a 7-coordinate geometry to one Rh(10), one Rh(17), one Rh(18), one Rh(5), one Rh(6), one Rh(8), and one B(9) atom. is represented by the CIF card [CIF]
data_B11Rh18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.492
_cell_length_b   6.856
_cell_length_c   9.112
_cell_angle_alpha   110.855
_cell_angle_beta   94.520
_cell_angle_gamma   90.578
_symmetry_Int_Tables_number   1
_cell_volume   319.345
_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
  B  B0  1  0.657  0.963  0.459  1.0
  B  B1  1  0.359  0.051  0.547  1.0
  B  B2  1  0.982  0.617  0.182  1.0
  B  B3  1  0.021  0.378  0.806  1.0
  B  B4  1  0.910  0.907  0.784  1.0
  B  B5  1  0.095  0.096  0.223  1.0
  B  B6  1  0.538  0.231  0.942  1.0
  B  B7  1  0.463  0.767  0.058  1.0
  B  B8  1  0.793  0.230  0.270  1.0
  B  B9  1  0.208  0.764  0.726  1.0
  B  B10  1  0.853  0.470  0.457  1.0
  Rh  Rh11  1  0.738  0.525  0.974  1.0
  Rh  Rh12  1  0.258  0.471  0.020  1.0
  Rh  Rh13  1  0.572  0.856  0.870  1.0
  Rh  Rh14  1  0.425  0.145  0.131  1.0
  Rh  Rh15  1  0.842  0.560  0.693  1.0
  Rh  Rh16  1  0.152  0.447  0.312  1.0
  Rh  Rh17  1  0.452  0.748  0.540  1.0
  Rh  Rh18  1  0.536  0.258  0.454  1.0
  Rh  Rh19  1  0.336  0.483  0.724  1.0
  Rh  Rh20  1  0.654  0.522  0.271  1.0
  Rh  Rh21  1  0.897  0.185  0.036  1.0
  Rh  Rh22  1  0.103  0.816  0.966  1.0
  Rh  Rh23  1  0.728  0.146  0.723  1.0
  Rh  Rh24  1  0.274  0.850  0.277  1.0
  Rh  Rh25  1  0.236  0.099  0.768  1.0
  Rh  Rh26  1  0.767  0.896  0.230  1.0
  Rh  Rh27  1  0.951  0.797  0.522  1.0
  Rh  Rh28  1  0.040  0.193  0.483  1.0
[/CIF]
.
The crystal structure described by Rh18B11 crystallizes in the triclinic P1 space group. There are eighteen inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to one B(3), one B(4), one B(7), and one B(8) atom to form distorted edge-sharing RhB4 tetrahedra. In the second Rh site, Rh(2) is bonded to one B(3), one B(4), one B(7), and one B(8) atom to form distorted edge-sharing RhB4 tetrahedra. In the third Rh site, Rh(3) is bonded in a 4-coordinate geometry to one B(10), one B(5), one B(7), and one B(8) atom. In the fourth Rh site, Rh(4) is bonded in a 4-coordinate geometry to one B(6), one B(7), one B(8), and one B(9) atom. In the fifth Rh site, Rh(5) is bonded in a 4-coordinate geometry to one B(10), one B(11), one B(4), and one B(5) atom. In the sixth Rh site, Rh(6) is bonded in a 3-coordinate geometry to one B(11), one B(3), one B(6), and one B(9) atom. In the seventh Rh site, Rh(7) is bonded in a 3-coordinate geometry to one B(1), one B(10), and one B(2) atom. In the eighth Rh site, Rh(8) is bonded in a 4-coordinate geometry to one B(1), one B(11), one B(2), and one B(9) atom. In the ninth Rh site, Rh(9) is bonded in a distorted water-like geometry to one B(10), one B(2), and one B(4) atom. In the tenth Rh site, Rh(10) is bonded in a distorted T-shaped geometry to one B(11), one B(3), and one B(9) atom. In the eleventh Rh site, Rh(11) is bonded in a 4-coordinate geometry to one B(5), one B(6), one B(7), and one B(9) atom. In the twelfth Rh site, Rh(12) is bonded in a 4-coordinate geometry to one B(10), one B(5), one B(6), and one B(8) atom. In the thirteenth Rh site, Rh(13) is bonded in a 5-coordinate geometry to one B(1), one B(2), one B(4), one B(5), and one B(7) atom. In the fourteenth Rh site, Rh(14) is bonded in a 5-coordinate geometry to one B(1), one B(2), one B(3), one B(6), and one B(8) atom. In the fifteenth Rh site, Rh(15) is bonded in a 5-coordinate geometry to one B(10), one B(2), one B(4), one B(5), and one B(7) atom. In the sixteenth Rh site, Rh(16) is bonded in a 5-coordinate geometry to one B(1), one B(3), one B(6), one B(8), and one B(9) atom. In the seventeenth Rh site, Rh(17) is bonded in a 4-coordinate geometry to one B(1), one B(10), one B(11), one B(2), and one B(5) atom. In the eighteenth Rh site, Rh(18) is bonded in a 3-coordinate geometry to one B(1), one B(11), one B(2), one B(6), and one B(9) atom. There are eleven inequivalent B sites. In the first B site, B(1) is bonded in a 8-coordinate geometry to one Rh(13), one Rh(14), one Rh(16), one Rh(17), one Rh(18), one Rh(7), one Rh(8), and one B(2) atom. In the second B site, B(2) is bonded in a 9-coordinate geometry to one Rh(13), one Rh(14), one Rh(15), one Rh(17), one Rh(18), one Rh(7), one Rh(8), one Rh(9), and one B(1) atom. In the third B site, B(3) is bonded in a 6-coordinate geometry to one Rh(1), one Rh(10), one Rh(14), one Rh(16), one Rh(2), and one Rh(6) atom. In the fourth B site, B(4) is bonded in a 6-coordinate geometry to one Rh(1), one Rh(13), one Rh(15), one Rh(2), one Rh(5), and one Rh(9) atom. In the fifth B site, B(5) is bonded in a 8-coordinate geometry to one Rh(11), one Rh(12), one Rh(13), one Rh(15), one Rh(17), one Rh(3), one Rh(5), and one B(10) atom. In the sixth B site, B(6) is bonded in a 8-coordinate geometry to one Rh(11), one Rh(12), one Rh(14), one Rh(16), one Rh(18), one Rh(4), one Rh(6), and one B(9) atom. In the seventh B site, B(7) is bonded in a 7-coordinate geometry to one Rh(1), one Rh(11), one Rh(13), one Rh(15), one Rh(2), one Rh(3), and one Rh(4) atom. In the eighth B site, B(8) is bonded in a 7-coordinate geometry to one Rh(1), one Rh(12), one Rh(14), one Rh(16), one Rh(2), one Rh(3), and one Rh(4) atom. In the ninth B site, B(9) is bonded in a 9-coordinate geometry to one Rh(10), one Rh(11), one Rh(16), one Rh(18), one Rh(4), one Rh(6), one Rh(8), one B(11), and one B(6) atom. In the tenth B site, B(10) is bonded in a 8-coordinate geometry to one Rh(12), one Rh(15), one Rh(17), one Rh(3), one Rh(5), one Rh(7), one Rh(9), and one B(5) atom. In the eleventh B site, B(11) is bonded in a 7-coordinate geometry to one Rh(10), one Rh(17), one Rh(18), one Rh(5), one Rh(6), one Rh(8), and one B(9) atom. is represented by the CIF card [CIF]
data_B11Rh18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.492
_cell_length_b   6.856
_cell_length_c   9.112
_cell_angle_alpha   110.855
_cell_angle_beta   94.520
_cell_angle_gamma   90.578
_symmetry_Int_Tables_number   1
_cell_volume   319.345
_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
  B  B0  1  0.657  0.963  0.459  1.0
  B  B1  1  0.359  0.051  0.547  1.0
  B  B2  1  0.982  0.617  0.182  1.0
  B  B3  1  0.021  0.378  0.806  1.0
  B  B4  1  0.910  0.907  0.784  1.0
  B  B5  1  0.095  0.096  0.223  1.0
  B  B6  1  0.538  0.231  0.942  1.0
  B  B7  1  0.463  0.767  0.058  1.0
  B  B8  1  0.793  0.230  0.270  1.0
  B  B9  1  0.208  0.764  0.726  1.0
  B  B10  1  0.853  0.470  0.457  1.0
  Rh  Rh11  1  0.738  0.525  0.974  1.0
  Rh  Rh12  1  0.258  0.471  0.020  1.0
  Rh  Rh13  1  0.572  0.856  0.870  1.0
  Rh  Rh14  1  0.425  0.145  0.131  1.0
  Rh  Rh15  1  0.842  0.560  0.693  1.0
  Rh  Rh16  1  0.152  0.447  0.312  1.0
  Rh  Rh17  1  0.452  0.748  0.540  1.0
  Rh  Rh18  1  0.536  0.258  0.454  1.0
  Rh  Rh19  1  0.336  0.483  0.724  1.0
  Rh  Rh20  1  0.654  0.522  0.271  1.0
  Rh  Rh21  1  0.897  0.185  0.036  1.0
  Rh  Rh22  1  0.103  0.816  0.966  1.0
  Rh  Rh23  1  0.728  0.146  0.723  1.0
  Rh  Rh24  1  0.274  0.850  0.277  1.0
  Rh  Rh25  1  0.236  0.099  0.768  1.0
  Rh  Rh26  1  0.767  0.896  0.230  1.0
  Rh  Rh27  1  0.951  0.797  0.522  1.0
  Rh  Rh28  1  0.040  0.193  0.483  1.0
[/CIF]
.