The material described by RbSb3Se5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 7-coordinate geometry to one Se(5), two equivalent Se(1), two equivalent Se(3), and two equivalent Se(4) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one Se(3), one Se(5), two equivalent Se(1), and two equivalent Se(2) atoms to form a mixture of corner and edge-sharing SbSe6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the second Sb site, Sb(2) is bonded to one Se(1), one Se(4), two equivalent Se(2), and two equivalent Se(3) atoms to form a mixture of corner and edge-sharing SbSe6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the third Sb site, Sb(3) is bonded to one Se(2), two equivalent Se(4), and three equivalent Se(5) atoms to form a mixture of corner and edge-sharing SbSe6 octahedra. The corner-sharing octahedral tilt angles are 11°. There are five inequivalent Se sites. In the first Se site, Se(5) is bonded to one Rb(1), one Sb(1), and three equivalent Sb(3) atoms to form SeRbSb4 trigonal bipyramids that share  a cornercorner with one Se(2)Sb5 square pyramid, corners with two equivalent Se(4)Rb2Sb3 trigonal bipyramids, corners with two equivalent Se(5)RbSb4 trigonal bipyramids, corners with three equivalent Se(3)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(2)Sb5 square pyramids, edges with two equivalent Se(1)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(5)RbSb4 trigonal bipyramids, and edges with three equivalent Se(4)Rb2Sb3 trigonal bipyramids. In the second Se site, Se(1) is bonded to two equivalent Rb(1), one Sb(2), and two equivalent Sb(1) atoms to form distorted SeRb2Sb3 trigonal bipyramids that share corners with four equivalent Se(2)Sb5 square pyramids, corners with two equivalent Se(3)Rb2Sb3 trigonal bipyramids, corners with three equivalent Se(4)Rb2Sb3 trigonal bipyramids,  an edgeedge with one Se(2)Sb5 square pyramid,  an edgeedge with one Se(4)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(1)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(5)RbSb4 trigonal bipyramids, and edges with three equivalent Se(3)Rb2Sb3 trigonal bipyramids. In the third Se site, Se(2) is bonded to one Sb(3), two equivalent Sb(1), and two equivalent Sb(2) atoms to form SeSb5 square pyramids that share  a cornercorner with one Se(5)RbSb4 trigonal bipyramid, corners with four equivalent Se(1)Rb2Sb3 trigonal bipyramids, corners with four equivalent Se(3)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(2)Sb5 square pyramids,  an edgeedge with one Se(1)Rb2Sb3 trigonal bipyramid,  an edgeedge with one Se(3)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(4)Rb2Sb3 trigonal bipyramids, and edges with two equivalent Se(5)RbSb4 trigonal bipyramids. In the fourth Se site, Se(3) is bonded to two equivalent Rb(1), one Sb(1), and two equivalent Sb(2) atoms to form distorted SeRb2Sb3 trigonal bipyramids that share corners with four equivalent Se(2)Sb5 square pyramids, corners with two equivalent Se(1)Rb2Sb3 trigonal bipyramids, corners with three equivalent Se(5)RbSb4 trigonal bipyramids, corners with four equivalent Se(4)Rb2Sb3 trigonal bipyramids,  an edgeedge with one Se(2)Sb5 square pyramid,  an edgeedge with one Se(4)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(3)Rb2Sb3 trigonal bipyramids, and edges with three equivalent Se(1)Rb2Sb3 trigonal bipyramids. In the fifth Se site, Se(4) is bonded to two equivalent Rb(1), one Sb(2), and two equivalent Sb(3) atoms to form distorted SeRb2Sb3 trigonal bipyramids that share corners with two equivalent Se(5)RbSb4 trigonal bipyramids, corners with three equivalent Se(1)Rb2Sb3 trigonal bipyramids, corners with four equivalent Se(3)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(2)Sb5 square pyramids,  an edgeedge with one Se(1)Rb2Sb3 trigonal bipyramid,  an edgeedge with one Se(3)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(4)Rb2Sb3 trigonal bipyramids, and edges with three equivalent Se(5)RbSb4 trigonal bipyramids. is represented by the CIF file [CIF]
data_RbSb3Se5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.084
_cell_length_b   12.442
_cell_length_c   22.072
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1121.509
_cell_formula_units_Z   4
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  0.250  0.673  0.594  1.0
  Rb  Rb1  1  0.250  0.827  0.094  1.0
  Rb  Rb2  1  0.750  0.327  0.406  1.0
  Rb  Rb3  1  0.750  0.173  0.906  1.0
  Sb  Sb4  1  0.250  0.971  0.699  1.0
  Sb  Sb5  1  0.250  0.529  0.199  1.0
  Sb  Sb6  1  0.750  0.029  0.301  1.0
  Sb  Sb7  1  0.750  0.471  0.801  1.0
  Sb  Sb8  1  0.750  0.825  0.838  1.0
  Sb  Sb9  1  0.750  0.675  0.338  1.0
  Sb  Sb10  1  0.250  0.175  0.162  1.0
  Sb  Sb11  1  0.250  0.325  0.662  1.0
  Sb  Sb12  1  0.750  0.116  0.559  1.0
  Sb  Sb13  1  0.750  0.384  0.059  1.0
  Sb  Sb14  1  0.250  0.884  0.441  1.0
  Sb  Sb15  1  0.250  0.616  0.941  1.0
  Se  Se16  1  0.750  0.821  0.704  1.0
  Se  Se17  1  0.750  0.679  0.204  1.0
  Se  Se18  1  0.250  0.179  0.296  1.0
  Se  Se19  1  0.250  0.321  0.796  1.0
  Se  Se20  1  0.750  0.152  0.680  1.0
  Se  Se21  1  0.750  0.348  0.180  1.0
  Se  Se22  1  0.250  0.848  0.320  1.0
  Se  Se23  1  0.250  0.652  0.820  1.0
  Se  Se24  1  0.250  0.978  0.838  1.0
  Se  Se25  1  0.250  0.522  0.338  1.0
  Se  Se26  1  0.750  0.022  0.162  1.0
  Se  Se27  1  0.750  0.478  0.662  1.0
  Se  Se28  1  0.750  0.776  0.962  1.0
  Se  Se29  1  0.750  0.724  0.462  1.0
  Se  Se30  1  0.250  0.224  0.038  1.0
  Se  Se31  1  0.250  0.276  0.538  1.0
  Se  Se32  1  0.250  0.953  0.576  1.0
  Se  Se33  1  0.250  0.547  0.076  1.0
  Se  Se34  1  0.750  0.047  0.424  1.0
  Se  Se35  1  0.750  0.453  0.924  1.0
[/CIF]
.
The material described by RbSb3Se5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 7-coordinate geometry to one Se(5), two equivalent Se(1), two equivalent Se(3), and two equivalent Se(4) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one Se(3), one Se(5), two equivalent Se(1), and two equivalent Se(2) atoms to form a mixture of corner and edge-sharing SbSe6 octahedra. The corner-sharing octahedral tilt angles range from 1-11°. In the second Sb site, Sb(2) is bonded to one Se(1), one Se(4), two equivalent Se(2), and two equivalent Se(3) atoms to form a mixture of corner and edge-sharing SbSe6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the third Sb site, Sb(3) is bonded to one Se(2), two equivalent Se(4), and three equivalent Se(5) atoms to form a mixture of corner and edge-sharing SbSe6 octahedra. The corner-sharing octahedral tilt angles are 11°. There are five inequivalent Se sites. In the first Se site, Se(5) is bonded to one Rb(1), one Sb(1), and three equivalent Sb(3) atoms to form SeRbSb4 trigonal bipyramids that share  a cornercorner with one Se(2)Sb5 square pyramid, corners with two equivalent Se(4)Rb2Sb3 trigonal bipyramids, corners with two equivalent Se(5)RbSb4 trigonal bipyramids, corners with three equivalent Se(3)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(2)Sb5 square pyramids, edges with two equivalent Se(1)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(5)RbSb4 trigonal bipyramids, and edges with three equivalent Se(4)Rb2Sb3 trigonal bipyramids. In the second Se site, Se(1) is bonded to two equivalent Rb(1), one Sb(2), and two equivalent Sb(1) atoms to form distorted SeRb2Sb3 trigonal bipyramids that share corners with four equivalent Se(2)Sb5 square pyramids, corners with two equivalent Se(3)Rb2Sb3 trigonal bipyramids, corners with three equivalent Se(4)Rb2Sb3 trigonal bipyramids,  an edgeedge with one Se(2)Sb5 square pyramid,  an edgeedge with one Se(4)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(1)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(5)RbSb4 trigonal bipyramids, and edges with three equivalent Se(3)Rb2Sb3 trigonal bipyramids. In the third Se site, Se(2) is bonded to one Sb(3), two equivalent Sb(1), and two equivalent Sb(2) atoms to form SeSb5 square pyramids that share  a cornercorner with one Se(5)RbSb4 trigonal bipyramid, corners with four equivalent Se(1)Rb2Sb3 trigonal bipyramids, corners with four equivalent Se(3)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(2)Sb5 square pyramids,  an edgeedge with one Se(1)Rb2Sb3 trigonal bipyramid,  an edgeedge with one Se(3)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(4)Rb2Sb3 trigonal bipyramids, and edges with two equivalent Se(5)RbSb4 trigonal bipyramids. In the fourth Se site, Se(3) is bonded to two equivalent Rb(1), one Sb(1), and two equivalent Sb(2) atoms to form distorted SeRb2Sb3 trigonal bipyramids that share corners with four equivalent Se(2)Sb5 square pyramids, corners with two equivalent Se(1)Rb2Sb3 trigonal bipyramids, corners with three equivalent Se(5)RbSb4 trigonal bipyramids, corners with four equivalent Se(4)Rb2Sb3 trigonal bipyramids,  an edgeedge with one Se(2)Sb5 square pyramid,  an edgeedge with one Se(4)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(3)Rb2Sb3 trigonal bipyramids, and edges with three equivalent Se(1)Rb2Sb3 trigonal bipyramids. In the fifth Se site, Se(4) is bonded to two equivalent Rb(1), one Sb(2), and two equivalent Sb(3) atoms to form distorted SeRb2Sb3 trigonal bipyramids that share corners with two equivalent Se(5)RbSb4 trigonal bipyramids, corners with three equivalent Se(1)Rb2Sb3 trigonal bipyramids, corners with four equivalent Se(3)Rb2Sb3 trigonal bipyramids, edges with two equivalent Se(2)Sb5 square pyramids,  an edgeedge with one Se(1)Rb2Sb3 trigonal bipyramid,  an edgeedge with one Se(3)Rb2Sb3 trigonal bipyramid, edges with two equivalent Se(4)Rb2Sb3 trigonal bipyramids, and edges with three equivalent Se(5)RbSb4 trigonal bipyramids. is represented by the CIF file [CIF]
data_RbSb3Se5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.084
_cell_length_b   12.442
_cell_length_c   22.072
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1121.509
_cell_formula_units_Z   4
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  0.250  0.673  0.594  1.0
  Rb  Rb1  1  0.250  0.827  0.094  1.0
  Rb  Rb2  1  0.750  0.327  0.406  1.0
  Rb  Rb3  1  0.750  0.173  0.906  1.0
  Sb  Sb4  1  0.250  0.971  0.699  1.0
  Sb  Sb5  1  0.250  0.529  0.199  1.0
  Sb  Sb6  1  0.750  0.029  0.301  1.0
  Sb  Sb7  1  0.750  0.471  0.801  1.0
  Sb  Sb8  1  0.750  0.825  0.838  1.0
  Sb  Sb9  1  0.750  0.675  0.338  1.0
  Sb  Sb10  1  0.250  0.175  0.162  1.0
  Sb  Sb11  1  0.250  0.325  0.662  1.0
  Sb  Sb12  1  0.750  0.116  0.559  1.0
  Sb  Sb13  1  0.750  0.384  0.059  1.0
  Sb  Sb14  1  0.250  0.884  0.441  1.0
  Sb  Sb15  1  0.250  0.616  0.941  1.0
  Se  Se16  1  0.750  0.821  0.704  1.0
  Se  Se17  1  0.750  0.679  0.204  1.0
  Se  Se18  1  0.250  0.179  0.296  1.0
  Se  Se19  1  0.250  0.321  0.796  1.0
  Se  Se20  1  0.750  0.152  0.680  1.0
  Se  Se21  1  0.750  0.348  0.180  1.0
  Se  Se22  1  0.250  0.848  0.320  1.0
  Se  Se23  1  0.250  0.652  0.820  1.0
  Se  Se24  1  0.250  0.978  0.838  1.0
  Se  Se25  1  0.250  0.522  0.338  1.0
  Se  Se26  1  0.750  0.022  0.162  1.0
  Se  Se27  1  0.750  0.478  0.662  1.0
  Se  Se28  1  0.750  0.776  0.962  1.0
  Se  Se29  1  0.750  0.724  0.462  1.0
  Se  Se30  1  0.250  0.224  0.038  1.0
  Se  Se31  1  0.250  0.276  0.538  1.0
  Se  Se32  1  0.250  0.953  0.576  1.0
  Se  Se33  1  0.250  0.547  0.076  1.0
  Se  Se34  1  0.750  0.047  0.424  1.0
  Se  Se35  1  0.750  0.453  0.924  1.0
[/CIF]
.