The structure described by Pr8C8Cl5 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to one C(2), two equivalent C(1), two equivalent C(3), one Cl(1), one Cl(2), and one Cl(3) atom to form a mixture of distorted face and corner-sharing PrC5Cl3 hexagonal bipyramids. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one C(2), one C(3), one C(4), two equivalent C(1), one Cl(3), and two equivalent Cl(2) atoms. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one C(1), one C(3), two equivalent C(2), two equivalent C(4), one Cl(2), and two equivalent Cl(1) atoms. In the fourth Pr site, Pr(4) is bonded in a 7-coordinate geometry to one C(2), one C(3), two equivalent C(4), one Cl(1), one Cl(2), and one Cl(3) atom. There are four inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Pr(3), two equivalent Pr(1), two equivalent Pr(2), and one C(3) atom. In the second C site, C(2) is bonded to one Pr(1), one Pr(2), one Pr(4), two equivalent Pr(3), and one C(4) atom to form distorted CPr5C octahedra that share  a cornercorner with one Cl(3)Pr6 octahedra, corners with two equivalent C(2)Pr5C octahedra, corners with four equivalent Cl(2)Pr5 trigonal bipyramids,  an edgeedge with one Cl(3)Pr6 octahedra, and  an edgeedge with one Cl(2)Pr5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-66°. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Pr(2), one Pr(3), one Pr(4), two equivalent Pr(1), and one C(1) atom. In the fourth C site, C(4) is bonded in a 6-coordinate geometry to one Pr(2), two equivalent Pr(3), two equivalent Pr(4), and one C(2) atom. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a rectangular see-saw-like geometry to one Pr(1), one Pr(4), and two equivalent Pr(3) atoms. In the second Cl site, Cl(2) is bonded to one Pr(1), one Pr(3), one Pr(4), and two equivalent Pr(2) atoms to form distorted ClPr5 trigonal bipyramids that share corners with four equivalent C(2)Pr5C octahedra,  an edgeedge with one C(2)Pr5C octahedra, edges with two equivalent Cl(3)Pr6 octahedra, and  an edgeedge with one Cl(2)Pr5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 11-61°. In the third Cl site, Cl(3) is bonded to two equivalent Pr(1), two equivalent Pr(2), and two equivalent Pr(4) atoms to form distorted ClPr6 octahedra that share corners with two equivalent C(2)Pr5C octahedra, edges with two equivalent C(2)Pr5C octahedra, and edges with four equivalent Cl(2)Pr5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 19°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr8C8Cl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   17.117
_cell_length_b   6.836
_cell_length_c   7.716
_cell_angle_alpha   76.011
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   876.103
_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
  Pr  Pr0  1  0.070  0.876  0.151  1.0
  Pr  Pr1  1  0.570  0.624  0.849  1.0
  Pr  Pr2  1  0.930  0.124  0.849  1.0
  Pr  Pr3  1  0.430  0.376  0.151  1.0
  Pr  Pr4  1  0.951  0.383  0.225  1.0
  Pr  Pr5  1  0.451  0.117  0.775  1.0
  Pr  Pr6  1  0.049  0.617  0.775  1.0
  Pr  Pr7  1  0.549  0.883  0.225  1.0
  Pr  Pr8  1  0.195  0.376  0.074  1.0
  Pr  Pr9  1  0.695  0.124  0.926  1.0
  Pr  Pr10  1  0.805  0.624  0.926  1.0
  Pr  Pr11  1  0.305  0.876  0.074  1.0
  Pr  Pr12  1  0.173  0.103  0.701  1.0
  Pr  Pr13  1  0.673  0.397  0.299  1.0
  Pr  Pr14  1  0.827  0.897  0.299  1.0
  Pr  Pr15  1  0.327  0.603  0.701  1.0
  C  C16  1  0.038  0.277  0.021  1.0
  C  C17  1  0.538  0.223  0.979  1.0
  C  C18  1  0.962  0.723  0.979  1.0
  C  C19  1  0.462  0.777  0.021  1.0
  C  C20  1  0.160  0.764  0.952  1.0
  C  C21  1  0.660  0.736  0.048  1.0
  C  C22  1  0.840  0.236  0.048  1.0
  C  C23  1  0.340  0.264  0.952  1.0
  C  C24  1  0.085  0.221  0.902  1.0
  C  C25  1  0.585  0.279  0.098  1.0
  C  C26  1  0.915  0.779  0.098  1.0
  C  C27  1  0.415  0.721  0.902  1.0
  C  C28  1  0.285  0.218  0.842  1.0
  C  C29  1  0.785  0.282  0.158  1.0
  C  C30  1  0.715  0.782  0.158  1.0
  C  C31  1  0.215  0.718  0.842  1.0
  Cl  Cl32  1  0.203  0.984  0.350  1.0
  Cl  Cl33  1  0.703  0.516  0.650  1.0
  Cl  Cl34  1  0.797  0.016  0.650  1.0
  Cl  Cl35  1  0.297  0.484  0.350  1.0
  Cl  Cl36  1  0.097  0.482  0.415  1.0
  Cl  Cl37  1  0.597  0.018  0.585  1.0
  Cl  Cl38  1  0.903  0.518  0.585  1.0
  Cl  Cl39  1  0.403  0.982  0.415  1.0
  Cl  Cl40  1  0.000  0.000  0.500  1.0
  Cl  Cl41  1  0.500  0.500  0.500  1.0
[/CIF]
.
The structure described by Pr8C8Cl5 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to one C(2), two equivalent C(1), two equivalent C(3), one Cl(1), one Cl(2), and one Cl(3) atom to form a mixture of distorted face and corner-sharing PrC5Cl3 hexagonal bipyramids. In the second Pr site, Pr(2) is bonded in a 8-coordinate geometry to one C(2), one C(3), one C(4), two equivalent C(1), one Cl(3), and two equivalent Cl(2) atoms. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one C(1), one C(3), two equivalent C(2), two equivalent C(4), one Cl(2), and two equivalent Cl(1) atoms. In the fourth Pr site, Pr(4) is bonded in a 7-coordinate geometry to one C(2), one C(3), two equivalent C(4), one Cl(1), one Cl(2), and one Cl(3) atom. There are four inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Pr(3), two equivalent Pr(1), two equivalent Pr(2), and one C(3) atom. In the second C site, C(2) is bonded to one Pr(1), one Pr(2), one Pr(4), two equivalent Pr(3), and one C(4) atom to form distorted CPr5C octahedra that share  a cornercorner with one Cl(3)Pr6 octahedra, corners with two equivalent C(2)Pr5C octahedra, corners with four equivalent Cl(2)Pr5 trigonal bipyramids,  an edgeedge with one Cl(3)Pr6 octahedra, and  an edgeedge with one Cl(2)Pr5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 19-66°. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Pr(2), one Pr(3), one Pr(4), two equivalent Pr(1), and one C(1) atom. In the fourth C site, C(4) is bonded in a 6-coordinate geometry to one Pr(2), two equivalent Pr(3), two equivalent Pr(4), and one C(2) atom. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a rectangular see-saw-like geometry to one Pr(1), one Pr(4), and two equivalent Pr(3) atoms. In the second Cl site, Cl(2) is bonded to one Pr(1), one Pr(3), one Pr(4), and two equivalent Pr(2) atoms to form distorted ClPr5 trigonal bipyramids that share corners with four equivalent C(2)Pr5C octahedra,  an edgeedge with one C(2)Pr5C octahedra, edges with two equivalent Cl(3)Pr6 octahedra, and  an edgeedge with one Cl(2)Pr5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 11-61°. In the third Cl site, Cl(3) is bonded to two equivalent Pr(1), two equivalent Pr(2), and two equivalent Pr(4) atoms to form distorted ClPr6 octahedra that share corners with two equivalent C(2)Pr5C octahedra, edges with two equivalent C(2)Pr5C octahedra, and edges with four equivalent Cl(2)Pr5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 19°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr8C8Cl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   17.117
_cell_length_b   6.836
_cell_length_c   7.716
_cell_angle_alpha   76.011
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   876.103
_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
  Pr  Pr0  1  0.070  0.876  0.151  1.0
  Pr  Pr1  1  0.570  0.624  0.849  1.0
  Pr  Pr2  1  0.930  0.124  0.849  1.0
  Pr  Pr3  1  0.430  0.376  0.151  1.0
  Pr  Pr4  1  0.951  0.383  0.225  1.0
  Pr  Pr5  1  0.451  0.117  0.775  1.0
  Pr  Pr6  1  0.049  0.617  0.775  1.0
  Pr  Pr7  1  0.549  0.883  0.225  1.0
  Pr  Pr8  1  0.195  0.376  0.074  1.0
  Pr  Pr9  1  0.695  0.124  0.926  1.0
  Pr  Pr10  1  0.805  0.624  0.926  1.0
  Pr  Pr11  1  0.305  0.876  0.074  1.0
  Pr  Pr12  1  0.173  0.103  0.701  1.0
  Pr  Pr13  1  0.673  0.397  0.299  1.0
  Pr  Pr14  1  0.827  0.897  0.299  1.0
  Pr  Pr15  1  0.327  0.603  0.701  1.0
  C  C16  1  0.038  0.277  0.021  1.0
  C  C17  1  0.538  0.223  0.979  1.0
  C  C18  1  0.962  0.723  0.979  1.0
  C  C19  1  0.462  0.777  0.021  1.0
  C  C20  1  0.160  0.764  0.952  1.0
  C  C21  1  0.660  0.736  0.048  1.0
  C  C22  1  0.840  0.236  0.048  1.0
  C  C23  1  0.340  0.264  0.952  1.0
  C  C24  1  0.085  0.221  0.902  1.0
  C  C25  1  0.585  0.279  0.098  1.0
  C  C26  1  0.915  0.779  0.098  1.0
  C  C27  1  0.415  0.721  0.902  1.0
  C  C28  1  0.285  0.218  0.842  1.0
  C  C29  1  0.785  0.282  0.158  1.0
  C  C30  1  0.715  0.782  0.158  1.0
  C  C31  1  0.215  0.718  0.842  1.0
  Cl  Cl32  1  0.203  0.984  0.350  1.0
  Cl  Cl33  1  0.703  0.516  0.650  1.0
  Cl  Cl34  1  0.797  0.016  0.650  1.0
  Cl  Cl35  1  0.297  0.484  0.350  1.0
  Cl  Cl36  1  0.097  0.482  0.415  1.0
  Cl  Cl37  1  0.597  0.018  0.585  1.0
  Cl  Cl38  1  0.903  0.518  0.585  1.0
  Cl  Cl39  1  0.403  0.982  0.415  1.0
  Cl  Cl40  1  0.000  0.000  0.500  1.0
  Cl  Cl41  1  0.500  0.500  0.500  1.0
[/CIF]
.