The compound described by RbPbCl3 crystallizes in the monoclinic P2_1 space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent Cl(3), three equivalent Cl(1), and three equivalent Cl(2) atoms. Pb(1) is bonded to two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms to form a mixture of edge and corner-sharing PbCl6 octahedra. The corner-sharing octahedral tilt angles are 42°. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent Rb(1) and two equivalent Pb(1) atoms to form distorted ClRb3Pb2 trigonal bipyramids that share corners with four equivalent Cl(3)Rb2Pb2 tetrahedra, corners with four equivalent Cl(1)Rb3Pb2 trigonal bipyramids, corners with five equivalent Cl(2)Rb3Pb2 trigonal bipyramids, edges with three equivalent Cl(3)Rb2Pb2 tetrahedra, edges with two equivalent Cl(1)Rb3Pb2 trigonal bipyramids, and edges with four equivalent Cl(2)Rb3Pb2 trigonal bipyramids. In the second Cl site, Cl(2) is bonded to three equivalent Rb(1) and two equivalent Pb(1) atoms to form distorted ClRb3Pb2 trigonal bipyramids that share corners with four equivalent Cl(3)Rb2Pb2 tetrahedra, corners with four equivalent Cl(2)Rb3Pb2 trigonal bipyramids, corners with five equivalent Cl(1)Rb3Pb2 trigonal bipyramids, edges with three equivalent Cl(3)Rb2Pb2 tetrahedra, edges with two equivalent Cl(2)Rb3Pb2 trigonal bipyramids, and edges with four equivalent Cl(1)Rb3Pb2 trigonal bipyramids. In the third Cl site, Cl(3) is bonded to two equivalent Rb(1) and two equivalent Pb(1) atoms to form distorted ClRb2Pb2 tetrahedra that share corners with four equivalent Cl(3)Rb2Pb2 tetrahedra, corners with four equivalent Cl(1)Rb3Pb2 trigonal bipyramids, corners with four equivalent Cl(2)Rb3Pb2 trigonal bipyramids, edges with three equivalent Cl(1)Rb3Pb2 trigonal bipyramids, and edges with three equivalent Cl(2)Rb3Pb2 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbPbCl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.276
_cell_length_b   7.341
_cell_length_c   10.694
_cell_angle_alpha   90.001
_cell_angle_beta   89.996
_cell_angle_gamma   106.810
_symmetry_Int_Tables_number   1
_cell_volume   321.328
_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  0.252  0.504  0.010  1.0
  Rb  Rb1  1  0.748  0.496  0.510  1.0
  Pb  Pb2  1  0.999  0.000  0.759  1.0
  Pb  Pb3  1  0.001  0.000  0.259  1.0
  Cl  Cl4  1  0.364  0.728  0.705  1.0
  Cl  Cl5  1  0.636  0.272  0.205  1.0
  Cl  Cl6  1  0.365  0.728  0.315  1.0
  Cl  Cl7  1  0.635  0.272  0.815  1.0
  Cl  Cl8  1  0.928  0.855  0.009  1.0
  Cl  Cl9  1  0.072  0.145  0.509  1.0
[/CIF]
.
The compound described by RbPbCl3 crystallizes in the monoclinic P2_1 space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent Cl(3), three equivalent Cl(1), and three equivalent Cl(2) atoms. Pb(1) is bonded to two equivalent Cl(1), two equivalent Cl(2), and two equivalent Cl(3) atoms to form a mixture of edge and corner-sharing PbCl6 octahedra. The corner-sharing octahedral tilt angles are 42°. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent Rb(1) and two equivalent Pb(1) atoms to form distorted ClRb3Pb2 trigonal bipyramids that share corners with four equivalent Cl(3)Rb2Pb2 tetrahedra, corners with four equivalent Cl(1)Rb3Pb2 trigonal bipyramids, corners with five equivalent Cl(2)Rb3Pb2 trigonal bipyramids, edges with three equivalent Cl(3)Rb2Pb2 tetrahedra, edges with two equivalent Cl(1)Rb3Pb2 trigonal bipyramids, and edges with four equivalent Cl(2)Rb3Pb2 trigonal bipyramids. In the second Cl site, Cl(2) is bonded to three equivalent Rb(1) and two equivalent Pb(1) atoms to form distorted ClRb3Pb2 trigonal bipyramids that share corners with four equivalent Cl(3)Rb2Pb2 tetrahedra, corners with four equivalent Cl(2)Rb3Pb2 trigonal bipyramids, corners with five equivalent Cl(1)Rb3Pb2 trigonal bipyramids, edges with three equivalent Cl(3)Rb2Pb2 tetrahedra, edges with two equivalent Cl(2)Rb3Pb2 trigonal bipyramids, and edges with four equivalent Cl(1)Rb3Pb2 trigonal bipyramids. In the third Cl site, Cl(3) is bonded to two equivalent Rb(1) and two equivalent Pb(1) atoms to form distorted ClRb2Pb2 tetrahedra that share corners with four equivalent Cl(3)Rb2Pb2 tetrahedra, corners with four equivalent Cl(1)Rb3Pb2 trigonal bipyramids, corners with four equivalent Cl(2)Rb3Pb2 trigonal bipyramids, edges with three equivalent Cl(1)Rb3Pb2 trigonal bipyramids, and edges with three equivalent Cl(2)Rb3Pb2 trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbPbCl3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.276
_cell_length_b   7.341
_cell_length_c   10.694
_cell_angle_alpha   90.001
_cell_angle_beta   89.996
_cell_angle_gamma   106.810
_symmetry_Int_Tables_number   1
_cell_volume   321.328
_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  0.252  0.504  0.010  1.0
  Rb  Rb1  1  0.748  0.496  0.510  1.0
  Pb  Pb2  1  0.999  0.000  0.759  1.0
  Pb  Pb3  1  0.001  0.000  0.259  1.0
  Cl  Cl4  1  0.364  0.728  0.705  1.0
  Cl  Cl5  1  0.636  0.272  0.205  1.0
  Cl  Cl6  1  0.365  0.728  0.315  1.0
  Cl  Cl7  1  0.635  0.272  0.815  1.0
  Cl  Cl8  1  0.928  0.855  0.009  1.0
  Cl  Cl9  1  0.072  0.145  0.509  1.0
[/CIF]
.