The material structure described by Rb7(FeTe2)4 crystallizes in the monoclinic C2/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 12-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), two equivalent Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one Te(1), one Te(3), two equivalent Te(2), and two equivalent Te(4) atoms. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one Fe(1), one Fe(2), one Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. In the fourth Rb site, Rb(4) is bonded in a 5-coordinate geometry to one Te(1), two equivalent Te(3), and two equivalent Te(4) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Te(1), one Te(4), and two equivalent Te(2) atoms. In the second Fe site, Fe(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Te(2), one Te(3), and two equivalent Te(1) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 7-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Rb(4), one Fe(2), and two equivalent Fe(1) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Rb(1), two equivalent Rb(2), two equivalent Rb(3), one Fe(1), and two equivalent Fe(2) atoms. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), two equivalent Rb(4), and one Fe(1) atom. In the fourth Te site, Te(4) is bonded in a distorted body-centered cubic geometry to one Rb(1), two equivalent Rb(2), two equivalent Rb(3), two equivalent Rb(4), and one Fe(2) atom. is represented by the CIF file [CIF]
data_Rb7(FeTe2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.061
_cell_length_b   11.061
_cell_length_c   17.822
_cell_angle_alpha   64.882
_cell_angle_beta   64.882
_cell_angle_gamma   48.081
_symmetry_Int_Tables_number   1
_cell_volume   1436.428
_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  0.245  0.755  0.250  1.0
  Rb  Rb1  1  0.755  0.245  0.750  1.0
  Rb  Rb2  1  0.242  0.751  0.492  1.0
  Rb  Rb3  1  0.249  0.758  0.008  1.0
  Rb  Rb4  1  0.758  0.249  0.508  1.0
  Rb  Rb5  1  0.751  0.242  0.992  1.0
  Rb  Rb6  1  0.013  0.501  0.116  1.0
  Rb  Rb7  1  0.499  0.987  0.384  1.0
  Rb  Rb8  1  0.987  0.499  0.884  1.0
  Rb  Rb9  1  0.501  0.013  0.616  1.0
  Rb  Rb10  1  0.023  0.491  0.364  1.0
  Rb  Rb11  1  0.509  0.977  0.136  1.0
  Rb  Rb12  1  0.977  0.509  0.636  1.0
  Rb  Rb13  1  0.491  0.023  0.864  1.0
  Fe  Fe14  1  0.695  0.407  0.172  1.0
  Fe  Fe15  1  0.593  0.305  0.328  1.0
  Fe  Fe16  1  0.305  0.593  0.828  1.0
  Fe  Fe17  1  0.407  0.695  0.672  1.0
  Fe  Fe18  1  0.898  0.204  0.274  1.0
  Fe  Fe19  1  0.796  0.102  0.226  1.0
  Fe  Fe20  1  0.102  0.796  0.726  1.0
  Fe  Fe21  1  0.204  0.898  0.774  1.0
  Te  Te22  1  0.661  0.512  0.292  1.0
  Te  Te23  1  0.488  0.339  0.208  1.0
  Te  Te24  1  0.339  0.488  0.708  1.0
  Te  Te25  1  0.512  0.661  0.792  1.0
  Te  Te26  1  0.004  0.170  0.117  1.0
  Te  Te27  1  0.830  0.996  0.383  1.0
  Te  Te28  1  0.996  0.830  0.883  1.0
  Te  Te29  1  0.170  0.004  0.617  1.0
  Te  Te30  1  0.664  0.609  0.548  1.0
  Te  Te31  1  0.391  0.336  0.952  1.0
  Te  Te32  1  0.336  0.391  0.452  1.0
  Te  Te33  1  0.609  0.664  0.048  1.0
  Te  Te34  1  0.880  0.853  0.185  1.0
  Te  Te35  1  0.147  0.120  0.315  1.0
  Te  Te36  1  0.120  0.147  0.815  1.0
  Te  Te37  1  0.853  0.880  0.685  1.0
[/CIF]
.
The material structure described by Rb7(FeTe2)4 crystallizes in the monoclinic C2/c space group. There are four inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 12-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), two equivalent Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one Te(1), one Te(3), two equivalent Te(2), and two equivalent Te(4) atoms. In the third Rb site, Rb(3) is bonded in a 9-coordinate geometry to one Fe(1), one Fe(2), one Te(1), two equivalent Te(2), two equivalent Te(3), and two equivalent Te(4) atoms. In the fourth Rb site, Rb(4) is bonded in a 5-coordinate geometry to one Te(1), two equivalent Te(3), and two equivalent Te(4) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(2) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Te(1), one Te(4), and two equivalent Te(2) atoms. In the second Fe site, Fe(1) is bonded in a 4-coordinate geometry to one Rb(1), one Rb(3), one Te(2), one Te(3), and two equivalent Te(1) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 7-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), one Rb(4), one Fe(2), and two equivalent Fe(1) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Rb(1), two equivalent Rb(2), two equivalent Rb(3), one Fe(1), and two equivalent Fe(2) atoms. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), two equivalent Rb(4), and one Fe(1) atom. In the fourth Te site, Te(4) is bonded in a distorted body-centered cubic geometry to one Rb(1), two equivalent Rb(2), two equivalent Rb(3), two equivalent Rb(4), and one Fe(2) atom. is represented by the CIF file [CIF]
data_Rb7(FeTe2)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.061
_cell_length_b   11.061
_cell_length_c   17.822
_cell_angle_alpha   64.882
_cell_angle_beta   64.882
_cell_angle_gamma   48.081
_symmetry_Int_Tables_number   1
_cell_volume   1436.428
_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  0.245  0.755  0.250  1.0
  Rb  Rb1  1  0.755  0.245  0.750  1.0
  Rb  Rb2  1  0.242  0.751  0.492  1.0
  Rb  Rb3  1  0.249  0.758  0.008  1.0
  Rb  Rb4  1  0.758  0.249  0.508  1.0
  Rb  Rb5  1  0.751  0.242  0.992  1.0
  Rb  Rb6  1  0.013  0.501  0.116  1.0
  Rb  Rb7  1  0.499  0.987  0.384  1.0
  Rb  Rb8  1  0.987  0.499  0.884  1.0
  Rb  Rb9  1  0.501  0.013  0.616  1.0
  Rb  Rb10  1  0.023  0.491  0.364  1.0
  Rb  Rb11  1  0.509  0.977  0.136  1.0
  Rb  Rb12  1  0.977  0.509  0.636  1.0
  Rb  Rb13  1  0.491  0.023  0.864  1.0
  Fe  Fe14  1  0.695  0.407  0.172  1.0
  Fe  Fe15  1  0.593  0.305  0.328  1.0
  Fe  Fe16  1  0.305  0.593  0.828  1.0
  Fe  Fe17  1  0.407  0.695  0.672  1.0
  Fe  Fe18  1  0.898  0.204  0.274  1.0
  Fe  Fe19  1  0.796  0.102  0.226  1.0
  Fe  Fe20  1  0.102  0.796  0.726  1.0
  Fe  Fe21  1  0.204  0.898  0.774  1.0
  Te  Te22  1  0.661  0.512  0.292  1.0
  Te  Te23  1  0.488  0.339  0.208  1.0
  Te  Te24  1  0.339  0.488  0.708  1.0
  Te  Te25  1  0.512  0.661  0.792  1.0
  Te  Te26  1  0.004  0.170  0.117  1.0
  Te  Te27  1  0.830  0.996  0.383  1.0
  Te  Te28  1  0.996  0.830  0.883  1.0
  Te  Te29  1  0.170  0.004  0.617  1.0
  Te  Te30  1  0.664  0.609  0.548  1.0
  Te  Te31  1  0.391  0.336  0.952  1.0
  Te  Te32  1  0.336  0.391  0.452  1.0
  Te  Te33  1  0.609  0.664  0.048  1.0
  Te  Te34  1  0.880  0.853  0.185  1.0
  Te  Te35  1  0.147  0.120  0.315  1.0
  Te  Te36  1  0.120  0.147  0.815  1.0
  Te  Te37  1  0.853  0.880  0.685  1.0
[/CIF]
.