The material described by Rb2PbCl5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent Cl(2), two equivalent Cl(3), and three equivalent Cl(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(4), two equivalent Cl(1), two equivalent Cl(3), and two equivalent Cl(5) atoms. Pb(1) is bonded to one Cl(2), one Cl(3), two equivalent Cl(1), and two equivalent Cl(4) atoms to form a mixture of distorted corner and edge-sharing PbCl6 pentagonal pyramids. There are five inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to two equivalent Rb(2) and two equivalent Pb(1) atoms to form distorted ClRb2Pb2 trigonal pyramids that share corners with four equivalent Cl(5)Rb5 trigonal bipyramids, corners with two equivalent Cl(1)Rb2Pb2 trigonal pyramids, and  an edgeedge with one Cl(1)Rb2Pb2 trigonal pyramid. In the second Cl site, Cl(2) is bonded in a distorted rectangular see-saw-like geometry to one Rb(2), two equivalent Rb(1), and one Pb(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Pb(1) atom. In the fourth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one Rb(2) and two equivalent Pb(1) atoms. In the fifth Cl site, Cl(5) is bonded to two equivalent Rb(2) and three equivalent Rb(1) atoms to form ClRb5 trigonal bipyramids that share corners with four equivalent Cl(5)Rb5 trigonal bipyramids, corners with four equivalent Cl(1)Rb2Pb2 trigonal pyramids, and edges with two equivalent Cl(5)Rb5 trigonal bipyramids. is represented by the CIF card [CIF]
data_Rb2PbCl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.021
_cell_length_b   9.883
_cell_length_c   12.433
_cell_angle_alpha   90.706
_cell_angle_beta   90.172
_cell_angle_gamma   89.769
_symmetry_Int_Tables_number   1
_cell_volume   1108.324
_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  0.937  0.028  0.670  1.0
  Rb  Rb1  1  0.063  0.972  0.330  1.0
  Rb  Rb2  1  0.437  0.973  0.830  1.0
  Rb  Rb3  1  0.563  0.027  0.170  1.0
  Rb  Rb4  1  0.923  0.758  0.997  1.0
  Rb  Rb5  1  0.077  0.242  0.003  1.0
  Rb  Rb6  1  0.423  0.243  0.503  1.0
  Rb  Rb7  1  0.577  0.757  0.497  1.0
  Pb  Pb8  1  0.085  0.521  0.678  1.0
  Pb  Pb9  1  0.915  0.479  0.322  1.0
  Pb  Pb10  1  0.585  0.480  0.822  1.0
  Pb  Pb11  1  0.415  0.520  0.178  1.0
  Cl  Cl12  1  0.876  0.464  0.865  1.0
  Cl  Cl13  1  0.124  0.536  0.135  1.0
  Cl  Cl14  1  0.376  0.536  0.635  1.0
  Cl  Cl15  1  0.624  0.464  0.365  1.0
  Cl  Cl16  1  0.134  0.743  0.791  1.0
  Cl  Cl17  1  0.866  0.257  0.209  1.0
  Cl  Cl18  1  0.634  0.257  0.709  1.0
  Cl  Cl19  1  0.366  0.743  0.291  1.0
  Cl  Cl20  1  0.675  0.731  0.752  1.0
  Cl  Cl21  1  0.325  0.269  0.248  1.0
  Cl  Cl22  1  0.175  0.269  0.748  1.0
  Cl  Cl23  1  0.825  0.731  0.252  1.0
  Cl  Cl24  1  0.537  0.671  0.012  1.0
  Cl  Cl25  1  0.463  0.329  0.988  1.0
  Cl  Cl26  1  0.037  0.329  0.488  1.0
  Cl  Cl27  1  0.963  0.671  0.512  1.0
  Cl  Cl28  1  0.286  0.963  0.574  1.0
  Cl  Cl29  1  0.714  0.037  0.426  1.0
  Cl  Cl30  1  0.786  0.037  0.926  1.0
  Cl  Cl31  1  0.214  0.963  0.074  1.0
[/CIF]
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The material described by Rb2PbCl5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent Cl(2), two equivalent Cl(3), and three equivalent Cl(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(4), two equivalent Cl(1), two equivalent Cl(3), and two equivalent Cl(5) atoms. Pb(1) is bonded to one Cl(2), one Cl(3), two equivalent Cl(1), and two equivalent Cl(4) atoms to form a mixture of distorted corner and edge-sharing PbCl6 pentagonal pyramids. There are five inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to two equivalent Rb(2) and two equivalent Pb(1) atoms to form distorted ClRb2Pb2 trigonal pyramids that share corners with four equivalent Cl(5)Rb5 trigonal bipyramids, corners with two equivalent Cl(1)Rb2Pb2 trigonal pyramids, and  an edgeedge with one Cl(1)Rb2Pb2 trigonal pyramid. In the second Cl site, Cl(2) is bonded in a distorted rectangular see-saw-like geometry to one Rb(2), two equivalent Rb(1), and one Pb(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), and one Pb(1) atom. In the fourth Cl site, Cl(4) is bonded in a 3-coordinate geometry to one Rb(2) and two equivalent Pb(1) atoms. In the fifth Cl site, Cl(5) is bonded to two equivalent Rb(2) and three equivalent Rb(1) atoms to form ClRb5 trigonal bipyramids that share corners with four equivalent Cl(5)Rb5 trigonal bipyramids, corners with four equivalent Cl(1)Rb2Pb2 trigonal pyramids, and edges with two equivalent Cl(5)Rb5 trigonal bipyramids. is represented by the CIF card [CIF]
data_Rb2PbCl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.021
_cell_length_b   9.883
_cell_length_c   12.433
_cell_angle_alpha   90.706
_cell_angle_beta   90.172
_cell_angle_gamma   89.769
_symmetry_Int_Tables_number   1
_cell_volume   1108.324
_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  0.937  0.028  0.670  1.0
  Rb  Rb1  1  0.063  0.972  0.330  1.0
  Rb  Rb2  1  0.437  0.973  0.830  1.0
  Rb  Rb3  1  0.563  0.027  0.170  1.0
  Rb  Rb4  1  0.923  0.758  0.997  1.0
  Rb  Rb5  1  0.077  0.242  0.003  1.0
  Rb  Rb6  1  0.423  0.243  0.503  1.0
  Rb  Rb7  1  0.577  0.757  0.497  1.0
  Pb  Pb8  1  0.085  0.521  0.678  1.0
  Pb  Pb9  1  0.915  0.479  0.322  1.0
  Pb  Pb10  1  0.585  0.480  0.822  1.0
  Pb  Pb11  1  0.415  0.520  0.178  1.0
  Cl  Cl12  1  0.876  0.464  0.865  1.0
  Cl  Cl13  1  0.124  0.536  0.135  1.0
  Cl  Cl14  1  0.376  0.536  0.635  1.0
  Cl  Cl15  1  0.624  0.464  0.365  1.0
  Cl  Cl16  1  0.134  0.743  0.791  1.0
  Cl  Cl17  1  0.866  0.257  0.209  1.0
  Cl  Cl18  1  0.634  0.257  0.709  1.0
  Cl  Cl19  1  0.366  0.743  0.291  1.0
  Cl  Cl20  1  0.675  0.731  0.752  1.0
  Cl  Cl21  1  0.325  0.269  0.248  1.0
  Cl  Cl22  1  0.175  0.269  0.748  1.0
  Cl  Cl23  1  0.825  0.731  0.252  1.0
  Cl  Cl24  1  0.537  0.671  0.012  1.0
  Cl  Cl25  1  0.463  0.329  0.988  1.0
  Cl  Cl26  1  0.037  0.329  0.488  1.0
  Cl  Cl27  1  0.963  0.671  0.512  1.0
  Cl  Cl28  1  0.286  0.963  0.574  1.0
  Cl  Cl29  1  0.714  0.037  0.426  1.0
  Cl  Cl30  1  0.786  0.037  0.926  1.0
  Cl  Cl31  1  0.214  0.963  0.074  1.0
[/CIF]
.