The crystal structure described by Sb11S18 crystallizes in the triclinic P1 space group. There are eleven inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one S(1), one S(11), one S(2), one S(3), and one S(6) atom to form SbS5 square pyramids that share corners with three equivalent Sb(11)S6 octahedra,  an edgeedge with one Sb(6)S5 square pyramid, and edges with two equivalent Sb(5)S5 square pyramids. The corner-sharing octahedral tilt angles range from 5-83°. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one S(1), one S(10), one S(14), one S(17), one S(18), and one S(4) atom. In the third Sb site, Sb(3) is bonded to one S(15), one S(16), one S(5), one S(8), and one S(9) atom to form edge-sharing SbS5 square pyramids. In the fourth Sb site, Sb(4) is bonded to one S(12), one S(13), one S(4), one S(5), and one S(8) atom to form edge-sharing SbS5 square pyramids. In the fifth Sb site, Sb(5) is bonded to one S(1), one S(11), one S(3), one S(6), and one S(7) atom to form SbS5 square pyramids that share  a cornercorner with one Sb(11)S6 octahedra, corners with two equivalent Sb(6)S5 square pyramids,  an edgeedge with one Sb(11)S6 octahedra, and edges with two equivalent Sb(1)S5 square pyramids. The corner-sharing octahedral tilt angles are 82°. In the sixth Sb site, Sb(6) is bonded to one S(1), one S(10), one S(14), one S(17), and one S(6) atom to form distorted SbS5 square pyramids that share corners with two equivalent Sb(5)S5 square pyramids, edges with two equivalent Sb(11)S6 octahedra, and  an edgeedge with one Sb(1)S5 square pyramid. In the seventh Sb site, Sb(7) is bonded in a 6-coordinate geometry to one S(10), one S(12), one S(14), one S(17), one S(18), and one S(6) atom. In the eighth Sb site, Sb(8) is bonded to one S(13), one S(15), one S(16), one S(8), and one S(9) atom to form edge-sharing SbS5 square pyramids. In the ninth Sb site, Sb(9) is bonded to one S(12), one S(13), one S(15), one S(4), and one S(5) atom to form edge-sharing SbS5 square pyramids. In the tenth Sb site, Sb(10) is bonded in a 3-coordinate geometry to one S(1), one S(11), one S(16), one S(2), and one S(7) atom. In the eleventh Sb site, Sb(11) is bonded to one S(1), one S(10), one S(11), one S(17), one S(18), and one S(6) atom to form a mixture of corner and edge-sharing SbS6 octahedra. There are eighteen inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to one Sb(1), one Sb(10), one Sb(11), one Sb(2), one Sb(5), and one Sb(6) atom. In the second S site, S(2) is bonded in a water-like geometry to one Sb(1) and one Sb(10) atom. In the third S site, S(3) is bonded in a 2-coordinate geometry to one Sb(1) and one Sb(5) atom. In the fourth S site, S(4) is bonded in a trigonal non-coplanar geometry to one Sb(2), one Sb(4), and one Sb(9) atom. In the fifth S site, S(5) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(4), and one Sb(9) atom. In the sixth S site, S(6) is bonded in a distorted square pyramidal geometry to one Sb(1), one Sb(11), one Sb(5), one Sb(6), and one Sb(7) atom. In the seventh S site, S(7) is bonded in a water-like geometry to one Sb(10) and one Sb(5) atom. In the eighth S site, S(8) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(4), and one Sb(8) atom. In the ninth S site, S(9) is bonded in an L-shaped geometry to one Sb(3) and one Sb(8) atom. In the tenth S site, S(10) is bonded in a rectangular see-saw-like geometry to one Sb(11), one Sb(2), one Sb(6), and one Sb(7) atom. In the eleventh S site, S(11) is bonded in a 4-coordinate geometry to one Sb(1), one Sb(10), one Sb(11), and one Sb(5) atom. In the twelfth S site, S(12) is bonded in a trigonal non-coplanar geometry to one Sb(4), one Sb(7), and one Sb(9) atom. In the thirteenth S site, S(13) is bonded in a distorted T-shaped geometry to one Sb(4), one Sb(8), and one Sb(9) atom. In the fourteenth S site, S(14) is bonded in a distorted trigonal non-coplanar geometry to one Sb(2), one Sb(6), and one Sb(7) atom. In the fifteenth S site, S(15) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(8), and one Sb(9) atom. In the sixteenth S site, S(16) is bonded in a trigonal non-coplanar geometry to one Sb(10), one Sb(3), and one Sb(8) atom. In the seventeenth S site, S(17) is bonded in a rectangular see-saw-like geometry to one Sb(11), one Sb(2), one Sb(6), and one Sb(7) atom. In the eighteenth S site, S(18) is bonded in a distorted T-shaped geometry to one Sb(11), one Sb(2), and one Sb(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb11S18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.862
_cell_length_b   7.733
_cell_length_c   15.426
_cell_angle_alpha   75.771
_cell_angle_beta   81.204
_cell_angle_gamma   73.489
_symmetry_Int_Tables_number   1
_cell_volume   757.631
_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
  Sb  Sb0  1  0.285  0.216  0.922  1.0
  Sb  Sb1  1  0.147  0.867  0.197  1.0
  Sb  Sb2  1  0.525  0.576  0.610  1.0
  Sb  Sb3  1  0.483  0.934  0.386  1.0
  Sb  Sb4  1  0.283  0.718  0.921  1.0
  Sb  Sb5  1  0.715  0.291  0.068  1.0
  Sb  Sb6  1  0.152  0.366  0.193  1.0
  Sb  Sb7  1  0.523  0.056  0.609  1.0
  Sb  Sb8  1  0.494  0.427  0.393  1.0
  Sb  Sb9  1  0.888  0.125  0.801  1.0
  Sb  Sb10  1  0.722  0.786  0.064  1.0
  S  S11  1  0.985  0.997  0.003  1.0
  S  S12  1  0.140  0.318  0.774  1.0
  S  S13  1  0.534  0.422  0.877  1.0
  S  S14  1  0.198  0.774  0.359  1.0
  S  S15  1  0.718  0.587  0.460  1.0
  S  S16  1  0.978  0.508  0.005  1.0
  S  S17  1  0.142  0.833  0.773  1.0
  S  S18  1  0.286  0.911  0.538  1.0
  S  S19  1  0.755  0.736  0.656  1.0
  S  S20  1  0.442  0.083  0.128  1.0
  S  S21  1  0.549  0.918  0.888  1.0
  S  S22  1  0.200  0.266  0.356  1.0
  S  S23  1  0.718  0.091  0.460  1.0
  S  S24  1  0.867  0.176  0.222  1.0
  S  S25  1  0.280  0.411  0.537  1.0
  S  S26  1  0.799  0.228  0.642  1.0
  S  S27  1  0.445  0.575  0.126  1.0
  S  S28  1  0.871  0.676  0.223  1.0
[/CIF]
.
The crystal structure described by Sb11S18 crystallizes in the triclinic P1 space group. There are eleven inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one S(1), one S(11), one S(2), one S(3), and one S(6) atom to form SbS5 square pyramids that share corners with three equivalent Sb(11)S6 octahedra,  an edgeedge with one Sb(6)S5 square pyramid, and edges with two equivalent Sb(5)S5 square pyramids. The corner-sharing octahedral tilt angles range from 5-83°. In the second Sb site, Sb(2) is bonded in a 5-coordinate geometry to one S(1), one S(10), one S(14), one S(17), one S(18), and one S(4) atom. In the third Sb site, Sb(3) is bonded to one S(15), one S(16), one S(5), one S(8), and one S(9) atom to form edge-sharing SbS5 square pyramids. In the fourth Sb site, Sb(4) is bonded to one S(12), one S(13), one S(4), one S(5), and one S(8) atom to form edge-sharing SbS5 square pyramids. In the fifth Sb site, Sb(5) is bonded to one S(1), one S(11), one S(3), one S(6), and one S(7) atom to form SbS5 square pyramids that share  a cornercorner with one Sb(11)S6 octahedra, corners with two equivalent Sb(6)S5 square pyramids,  an edgeedge with one Sb(11)S6 octahedra, and edges with two equivalent Sb(1)S5 square pyramids. The corner-sharing octahedral tilt angles are 82°. In the sixth Sb site, Sb(6) is bonded to one S(1), one S(10), one S(14), one S(17), and one S(6) atom to form distorted SbS5 square pyramids that share corners with two equivalent Sb(5)S5 square pyramids, edges with two equivalent Sb(11)S6 octahedra, and  an edgeedge with one Sb(1)S5 square pyramid. In the seventh Sb site, Sb(7) is bonded in a 6-coordinate geometry to one S(10), one S(12), one S(14), one S(17), one S(18), and one S(6) atom. In the eighth Sb site, Sb(8) is bonded to one S(13), one S(15), one S(16), one S(8), and one S(9) atom to form edge-sharing SbS5 square pyramids. In the ninth Sb site, Sb(9) is bonded to one S(12), one S(13), one S(15), one S(4), and one S(5) atom to form edge-sharing SbS5 square pyramids. In the tenth Sb site, Sb(10) is bonded in a 3-coordinate geometry to one S(1), one S(11), one S(16), one S(2), and one S(7) atom. In the eleventh Sb site, Sb(11) is bonded to one S(1), one S(10), one S(11), one S(17), one S(18), and one S(6) atom to form a mixture of corner and edge-sharing SbS6 octahedra. There are eighteen inequivalent S sites. In the first S site, S(1) is bonded in a 6-coordinate geometry to one Sb(1), one Sb(10), one Sb(11), one Sb(2), one Sb(5), and one Sb(6) atom. In the second S site, S(2) is bonded in a water-like geometry to one Sb(1) and one Sb(10) atom. In the third S site, S(3) is bonded in a 2-coordinate geometry to one Sb(1) and one Sb(5) atom. In the fourth S site, S(4) is bonded in a trigonal non-coplanar geometry to one Sb(2), one Sb(4), and one Sb(9) atom. In the fifth S site, S(5) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(4), and one Sb(9) atom. In the sixth S site, S(6) is bonded in a distorted square pyramidal geometry to one Sb(1), one Sb(11), one Sb(5), one Sb(6), and one Sb(7) atom. In the seventh S site, S(7) is bonded in a water-like geometry to one Sb(10) and one Sb(5) atom. In the eighth S site, S(8) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(4), and one Sb(8) atom. In the ninth S site, S(9) is bonded in an L-shaped geometry to one Sb(3) and one Sb(8) atom. In the tenth S site, S(10) is bonded in a rectangular see-saw-like geometry to one Sb(11), one Sb(2), one Sb(6), and one Sb(7) atom. In the eleventh S site, S(11) is bonded in a 4-coordinate geometry to one Sb(1), one Sb(10), one Sb(11), and one Sb(5) atom. In the twelfth S site, S(12) is bonded in a trigonal non-coplanar geometry to one Sb(4), one Sb(7), and one Sb(9) atom. In the thirteenth S site, S(13) is bonded in a distorted T-shaped geometry to one Sb(4), one Sb(8), and one Sb(9) atom. In the fourteenth S site, S(14) is bonded in a distorted trigonal non-coplanar geometry to one Sb(2), one Sb(6), and one Sb(7) atom. In the fifteenth S site, S(15) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(8), and one Sb(9) atom. In the sixteenth S site, S(16) is bonded in a trigonal non-coplanar geometry to one Sb(10), one Sb(3), and one Sb(8) atom. In the seventeenth S site, S(17) is bonded in a rectangular see-saw-like geometry to one Sb(11), one Sb(2), one Sb(6), and one Sb(7) atom. In the eighteenth S site, S(18) is bonded in a distorted T-shaped geometry to one Sb(11), one Sb(2), and one Sb(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sb11S18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.862
_cell_length_b   7.733
_cell_length_c   15.426
_cell_angle_alpha   75.771
_cell_angle_beta   81.204
_cell_angle_gamma   73.489
_symmetry_Int_Tables_number   1
_cell_volume   757.631
_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
  Sb  Sb0  1  0.285  0.216  0.922  1.0
  Sb  Sb1  1  0.147  0.867  0.197  1.0
  Sb  Sb2  1  0.525  0.576  0.610  1.0
  Sb  Sb3  1  0.483  0.934  0.386  1.0
  Sb  Sb4  1  0.283  0.718  0.921  1.0
  Sb  Sb5  1  0.715  0.291  0.068  1.0
  Sb  Sb6  1  0.152  0.366  0.193  1.0
  Sb  Sb7  1  0.523  0.056  0.609  1.0
  Sb  Sb8  1  0.494  0.427  0.393  1.0
  Sb  Sb9  1  0.888  0.125  0.801  1.0
  Sb  Sb10  1  0.722  0.786  0.064  1.0
  S  S11  1  0.985  0.997  0.003  1.0
  S  S12  1  0.140  0.318  0.774  1.0
  S  S13  1  0.534  0.422  0.877  1.0
  S  S14  1  0.198  0.774  0.359  1.0
  S  S15  1  0.718  0.587  0.460  1.0
  S  S16  1  0.978  0.508  0.005  1.0
  S  S17  1  0.142  0.833  0.773  1.0
  S  S18  1  0.286  0.911  0.538  1.0
  S  S19  1  0.755  0.736  0.656  1.0
  S  S20  1  0.442  0.083  0.128  1.0
  S  S21  1  0.549  0.918  0.888  1.0
  S  S22  1  0.200  0.266  0.356  1.0
  S  S23  1  0.718  0.091  0.460  1.0
  S  S24  1  0.867  0.176  0.222  1.0
  S  S25  1  0.280  0.411  0.537  1.0
  S  S26  1  0.799  0.228  0.642  1.0
  S  S27  1  0.445  0.575  0.126  1.0
  S  S28  1  0.871  0.676  0.223  1.0
[/CIF]
.