The structure described by RbCr5Te8 crystallizes in the monoclinic C2/m space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent Te(1), four equivalent Te(2), and four equivalent Te(3) atoms. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form a mixture of edge and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles are 49°. In the second Cr site, Cr(2) is bonded to one Te(1), two equivalent Te(2), and three equivalent Te(4) atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. In the third Cr site, Cr(3) is bonded to one Te(1), two equivalent Te(4), and three equivalent Te(3) atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), one Cr(2), one Cr(3), and two equivalent Cr(1) atoms. In the second Te site, Te(2) is bonded to two equivalent Rb(1), one Cr(1), and two equivalent Cr(2) atoms to form distorted TeRb2Cr3 square pyramids that share corners with three equivalent Te(2)Rb2Cr3 square pyramids, corners with four equivalent Te(4)Cr5 trigonal bipyramids, edges with three equivalent Te(2)Rb2Cr3 square pyramids, and  an edgeedge with one Te(4)Cr5 trigonal bipyramid. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to two equivalent Rb(1) and three equivalent Cr(3) atoms. In the fourth Te site, Te(4) is bonded to two equivalent Cr(3) and three equivalent Cr(2) atoms to form distorted TeCr5 trigonal bipyramids that share corners with four equivalent Te(2)Rb2Cr3 square pyramids,  an edgeedge with one Te(2)Rb2Cr3 square pyramid, and edges with four equivalent Te(4)Cr5 trigonal bipyramids. is represented by the CIF file [CIF]
data_RbCr5Te8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.502
_cell_length_b   10.502
_cell_length_c   9.743
_cell_angle_alpha   75.570
_cell_angle_beta   75.570
_cell_angle_gamma   22.058
_symmetry_Int_Tables_number   1
_cell_volume   390.306
_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
  Rb  Rb0  1  0.500  0.500  0.500  1.0
  Cr  Cr1  1  0.000  0.000  0.000  1.0
  Cr  Cr2  1  0.341  0.341  0.982  1.0
  Cr  Cr3  1  0.296  0.296  0.331  1.0
  Cr  Cr4  1  0.704  0.704  0.669  1.0
  Cr  Cr5  1  0.659  0.659  0.018  1.0
  Te  Te6  1  0.426  0.426  0.156  1.0
  Te  Te7  1  0.913  0.913  0.828  1.0
  Te  Te8  1  0.829  0.829  0.491  1.0
  Te  Te9  1  0.761  0.761  0.157  1.0
  Te  Te10  1  0.239  0.239  0.843  1.0
  Te  Te11  1  0.171  0.171  0.509  1.0
  Te  Te12  1  0.087  0.087  0.172  1.0
  Te  Te13  1  0.574  0.574  0.844  1.0
[/CIF]
.
The structure described by RbCr5Te8 crystallizes in the monoclinic C2/m space group. Rb(1) is bonded in a 10-coordinate geometry to two equivalent Te(1), four equivalent Te(2), and four equivalent Te(3) atoms. There are three inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form a mixture of edge and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles are 49°. In the second Cr site, Cr(2) is bonded to one Te(1), two equivalent Te(2), and three equivalent Te(4) atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. In the third Cr site, Cr(3) is bonded to one Te(1), two equivalent Te(4), and three equivalent Te(3) atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1), one Cr(2), one Cr(3), and two equivalent Cr(1) atoms. In the second Te site, Te(2) is bonded to two equivalent Rb(1), one Cr(1), and two equivalent Cr(2) atoms to form distorted TeRb2Cr3 square pyramids that share corners with three equivalent Te(2)Rb2Cr3 square pyramids, corners with four equivalent Te(4)Cr5 trigonal bipyramids, edges with three equivalent Te(2)Rb2Cr3 square pyramids, and  an edgeedge with one Te(4)Cr5 trigonal bipyramid. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to two equivalent Rb(1) and three equivalent Cr(3) atoms. In the fourth Te site, Te(4) is bonded to two equivalent Cr(3) and three equivalent Cr(2) atoms to form distorted TeCr5 trigonal bipyramids that share corners with four equivalent Te(2)Rb2Cr3 square pyramids,  an edgeedge with one Te(2)Rb2Cr3 square pyramid, and edges with four equivalent Te(4)Cr5 trigonal bipyramids. is represented by the CIF file [CIF]
data_RbCr5Te8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.502
_cell_length_b   10.502
_cell_length_c   9.743
_cell_angle_alpha   75.570
_cell_angle_beta   75.570
_cell_angle_gamma   22.058
_symmetry_Int_Tables_number   1
_cell_volume   390.306
_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
  Rb  Rb0  1  0.500  0.500  0.500  1.0
  Cr  Cr1  1  0.000  0.000  0.000  1.0
  Cr  Cr2  1  0.341  0.341  0.982  1.0
  Cr  Cr3  1  0.296  0.296  0.331  1.0
  Cr  Cr4  1  0.704  0.704  0.669  1.0
  Cr  Cr5  1  0.659  0.659  0.018  1.0
  Te  Te6  1  0.426  0.426  0.156  1.0
  Te  Te7  1  0.913  0.913  0.828  1.0
  Te  Te8  1  0.829  0.829  0.491  1.0
  Te  Te9  1  0.761  0.761  0.157  1.0
  Te  Te10  1  0.239  0.239  0.843  1.0
  Te  Te11  1  0.171  0.171  0.509  1.0
  Te  Te12  1  0.087  0.087  0.172  1.0
  Te  Te13  1  0.574  0.574  0.844  1.0
[/CIF]
.