The structure described by Rb4CdCl6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent Cl(3) and four equivalent Cl(1) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(3), and three equivalent Cl(2) atoms. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms. Cd(1) is bonded in a square co-planar geometry to two equivalent Cl(1) and two equivalent Cl(3) atoms. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one Rb(2), one Rb(3), two equivalent Rb(1), and one Cd(1) atom to form distorted ClRb4Cd square pyramids that share corners with four equivalent Cl(1)Rb4Cd square pyramids, corners with three equivalent Cl(2)Rb4 trigonal pyramids, edges with two equivalent Cl(1)Rb4Cd square pyramids, and  an edgeedge with one Cl(2)Rb4 trigonal pyramid. In the second Cl site, Cl(2) is bonded to one Rb(3) and three equivalent Rb(2) atoms to form ClRb4 trigonal pyramids that share corners with three equivalent Cl(1)Rb4Cd square pyramids, corners with three equivalent Cl(2)Rb4 trigonal pyramids,  an edgeedge with one Cl(1)Rb4Cd square pyramid, and edges with two equivalent Cl(2)Rb4 trigonal pyramids. In the third Cl site, Cl(3) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), and one Cd(1) atom. is represented by the CIF file [CIF]
data_Rb4CdCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.960
_cell_length_b   12.960
_cell_length_c   8.837
_cell_angle_alpha   85.298
_cell_angle_beta   85.298
_cell_angle_gamma   145.305
_symmetry_Int_Tables_number   1
_cell_volume   812.316
_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  0.526  0.474  0.250  1.0
  Rb  Rb1  1  0.474  0.526  0.750  1.0
  Rb  Rb2  1  0.011  0.653  0.107  1.0
  Rb  Rb3  1  0.357  0.643  0.250  1.0
  Rb  Rb4  1  0.347  0.989  0.393  1.0
  Rb  Rb5  1  0.989  0.347  0.893  1.0
  Rb  Rb6  1  0.643  0.357  0.750  1.0
  Rb  Rb7  1  0.653  0.011  0.607  1.0
  Cd  Cd8  1  0.000  0.000  0.500  1.0
  Cd  Cd9  1  0.000  0.000  0.000  1.0
  Cl  Cl10  1  0.297  0.175  0.585  1.0
  Cl  Cl11  1  0.755  0.328  0.451  1.0
  Cl  Cl12  1  0.901  0.743  0.451  1.0
  Cl  Cl13  1  0.703  0.825  0.415  1.0
  Cl  Cl14  1  0.245  0.672  0.549  1.0
  Cl  Cl15  1  0.099  0.257  0.549  1.0
  Cl  Cl16  1  0.328  0.755  0.951  1.0
  Cl  Cl17  1  0.743  0.901  0.951  1.0
  Cl  Cl18  1  0.175  0.297  0.085  1.0
  Cl  Cl19  1  0.672  0.245  0.049  1.0
  Cl  Cl20  1  0.257  0.099  0.049  1.0
  Cl  Cl21  1  0.825  0.703  0.915  1.0
[/CIF]
.
The structure described by Rb4CdCl6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent Cl(3) and four equivalent Cl(1) atoms. In the second Rb site, Rb(2) is bonded in a 5-coordinate geometry to one Cl(1), one Cl(3), and three equivalent Cl(2) atoms. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms. Cd(1) is bonded in a square co-planar geometry to two equivalent Cl(1) and two equivalent Cl(3) atoms. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one Rb(2), one Rb(3), two equivalent Rb(1), and one Cd(1) atom to form distorted ClRb4Cd square pyramids that share corners with four equivalent Cl(1)Rb4Cd square pyramids, corners with three equivalent Cl(2)Rb4 trigonal pyramids, edges with two equivalent Cl(1)Rb4Cd square pyramids, and  an edgeedge with one Cl(2)Rb4 trigonal pyramid. In the second Cl site, Cl(2) is bonded to one Rb(3) and three equivalent Rb(2) atoms to form ClRb4 trigonal pyramids that share corners with three equivalent Cl(1)Rb4Cd square pyramids, corners with three equivalent Cl(2)Rb4 trigonal pyramids,  an edgeedge with one Cl(1)Rb4Cd square pyramid, and edges with two equivalent Cl(2)Rb4 trigonal pyramids. In the third Cl site, Cl(3) is bonded in a 1-coordinate geometry to one Rb(1), one Rb(2), one Rb(3), and one Cd(1) atom. is represented by the CIF file [CIF]
data_Rb4CdCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.960
_cell_length_b   12.960
_cell_length_c   8.837
_cell_angle_alpha   85.298
_cell_angle_beta   85.298
_cell_angle_gamma   145.305
_symmetry_Int_Tables_number   1
_cell_volume   812.316
_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  0.526  0.474  0.250  1.0
  Rb  Rb1  1  0.474  0.526  0.750  1.0
  Rb  Rb2  1  0.011  0.653  0.107  1.0
  Rb  Rb3  1  0.357  0.643  0.250  1.0
  Rb  Rb4  1  0.347  0.989  0.393  1.0
  Rb  Rb5  1  0.989  0.347  0.893  1.0
  Rb  Rb6  1  0.643  0.357  0.750  1.0
  Rb  Rb7  1  0.653  0.011  0.607  1.0
  Cd  Cd8  1  0.000  0.000  0.500  1.0
  Cd  Cd9  1  0.000  0.000  0.000  1.0
  Cl  Cl10  1  0.297  0.175  0.585  1.0
  Cl  Cl11  1  0.755  0.328  0.451  1.0
  Cl  Cl12  1  0.901  0.743  0.451  1.0
  Cl  Cl13  1  0.703  0.825  0.415  1.0
  Cl  Cl14  1  0.245  0.672  0.549  1.0
  Cl  Cl15  1  0.099  0.257  0.549  1.0
  Cl  Cl16  1  0.328  0.755  0.951  1.0
  Cl  Cl17  1  0.743  0.901  0.951  1.0
  Cl  Cl18  1  0.175  0.297  0.085  1.0
  Cl  Cl19  1  0.672  0.245  0.049  1.0
  Cl  Cl20  1  0.257  0.099  0.049  1.0
  Cl  Cl21  1  0.825  0.703  0.915  1.0
[/CIF]
.