The structure described by Ce8C8Cl5 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one C(3), one C(4), two equivalent C(1), two equivalent C(2), one Cl(1), and two equivalent Cl(2) atoms. In the second Ce site, Ce(2) is bonded in a 8-coordinate geometry to one C(1), two equivalent C(3), two equivalent C(4), one Cl(1), one Cl(2), and one Cl(3) atom. In the third Ce site, Ce(3) is bonded in a 8-coordinate geometry to one C(1), one C(2), one C(4), two equivalent C(3), one Cl(3), and two equivalent Cl(1) atoms. In the fourth Ce site, Ce(4) is bonded in a 7-coordinate geometry to one C(1), one C(4), two equivalent C(2), 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 to one Ce(2), one Ce(3), one Ce(4), two equivalent Ce(1), and one C(2) atom to form distorted CCe5C octahedra that share  a cornercorner with one Cl(3)Ce6 octahedra, corners with two equivalent C(1)Ce5C octahedra, corners with four equivalent Cl(1)Ce5 trigonal bipyramids,  an edgeedge with one Cl(3)Ce6 octahedra, and  an edgeedge with one Cl(1)Ce5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 21-66°. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Ce(3), two equivalent Ce(1), two equivalent Ce(4), and one C(1) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Ce(1), two equivalent Ce(2), two equivalent Ce(3), and one C(4) atom. In the fourth C site, C(4) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(3), one Ce(4), two equivalent Ce(2), and one C(3) atom. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one Ce(1), one Ce(2), one Ce(4), and two equivalent Ce(3) atoms to form distorted ClCe5 trigonal bipyramids that share corners with four equivalent C(1)Ce5C octahedra,  an edgeedge with one C(1)Ce5C octahedra, edges with two equivalent Cl(3)Ce6 octahedra, and  an edgeedge with one Cl(1)Ce5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-59°. In the second Cl site, Cl(2) is bonded in a distorted rectangular see-saw-like geometry to one Ce(2), one Ce(4), and two equivalent Ce(1) atoms. In the third Cl site, Cl(3) is bonded to two equivalent Ce(2), two equivalent Ce(3), and two equivalent Ce(4) atoms to form distorted ClCe6 octahedra that share corners with two equivalent C(1)Ce5C octahedra, edges with two equivalent C(1)Ce5C octahedra, and edges with four equivalent Cl(1)Ce5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 21°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce8C8Cl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.548
_cell_length_b   6.654
_cell_length_c   7.589
_cell_angle_alpha   75.457
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   808.885
_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
  Ce  Ce0  1  0.306  0.371  0.076  1.0
  Ce  Ce1  1  0.068  0.380  0.150  1.0
  Ce  Ce2  1  0.949  0.888  0.220  1.0
  Ce  Ce3  1  0.051  0.112  0.780  1.0
  Ce  Ce4  1  0.694  0.629  0.924  1.0
  Ce  Ce5  1  0.449  0.612  0.780  1.0
  Ce  Ce6  1  0.932  0.620  0.850  1.0
  Ce  Ce7  1  0.194  0.871  0.076  1.0
  Ce  Ce8  1  0.673  0.897  0.294  1.0
  Ce  Ce9  1  0.551  0.388  0.220  1.0
  Ce  Ce10  1  0.432  0.880  0.150  1.0
  Ce  Ce11  1  0.327  0.103  0.706  1.0
  Ce  Ce12  1  0.568  0.120  0.850  1.0
  Ce  Ce13  1  0.806  0.129  0.924  1.0
  Ce  Ce14  1  0.173  0.603  0.706  1.0
  Ce  Ce15  1  0.827  0.397  0.294  1.0
  C  C16  1  0.660  0.233  0.038  1.0
  C  C17  1  0.284  0.716  0.845  1.0
  C  C18  1  0.840  0.733  0.038  1.0
  C  C19  1  0.716  0.284  0.155  1.0
  C  C20  1  0.539  0.723  0.970  1.0
  C  C21  1  0.340  0.767  0.962  1.0
  C  C22  1  0.216  0.216  0.845  1.0
  C  C23  1  0.461  0.277  0.030  1.0
  C  C24  1  0.086  0.721  0.897  1.0
  C  C25  1  0.039  0.777  0.030  1.0
  C  C26  1  0.914  0.279  0.103  1.0
  C  C27  1  0.586  0.779  0.103  1.0
  C  C28  1  0.784  0.784  0.155  1.0
  C  C29  1  0.160  0.267  0.962  1.0
  C  C30  1  0.961  0.223  0.970  1.0
  C  C31  1  0.414  0.221  0.897  1.0
  Cl  Cl32  1  0.097  0.979  0.415  1.0
  Cl  Cl33  1  0.297  0.975  0.357  1.0
  Cl  Cl34  1  0.203  0.475  0.357  1.0
  Cl  Cl35  1  0.903  0.021  0.585  1.0
  Cl  Cl36  1  0.403  0.479  0.415  1.0
  Cl  Cl37  1  0.797  0.525  0.643  1.0
  Cl  Cl38  1  0.500  0.000  0.500  1.0
  Cl  Cl39  1  0.597  0.521  0.585  1.0
  Cl  Cl40  1  0.000  0.500  0.500  1.0
  Cl  Cl41  1  0.703  0.025  0.643  1.0
[/CIF]
.
The structure described by Ce8C8Cl5 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one C(3), one C(4), two equivalent C(1), two equivalent C(2), one Cl(1), and two equivalent Cl(2) atoms. In the second Ce site, Ce(2) is bonded in a 8-coordinate geometry to one C(1), two equivalent C(3), two equivalent C(4), one Cl(1), one Cl(2), and one Cl(3) atom. In the third Ce site, Ce(3) is bonded in a 8-coordinate geometry to one C(1), one C(2), one C(4), two equivalent C(3), one Cl(3), and two equivalent Cl(1) atoms. In the fourth Ce site, Ce(4) is bonded in a 7-coordinate geometry to one C(1), one C(4), two equivalent C(2), 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 to one Ce(2), one Ce(3), one Ce(4), two equivalent Ce(1), and one C(2) atom to form distorted CCe5C octahedra that share  a cornercorner with one Cl(3)Ce6 octahedra, corners with two equivalent C(1)Ce5C octahedra, corners with four equivalent Cl(1)Ce5 trigonal bipyramids,  an edgeedge with one Cl(3)Ce6 octahedra, and  an edgeedge with one Cl(1)Ce5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 21-66°. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Ce(3), two equivalent Ce(1), two equivalent Ce(4), and one C(1) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Ce(1), two equivalent Ce(2), two equivalent Ce(3), and one C(4) atom. In the fourth C site, C(4) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(3), one Ce(4), two equivalent Ce(2), and one C(3) atom. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to one Ce(1), one Ce(2), one Ce(4), and two equivalent Ce(3) atoms to form distorted ClCe5 trigonal bipyramids that share corners with four equivalent C(1)Ce5C octahedra,  an edgeedge with one C(1)Ce5C octahedra, edges with two equivalent Cl(3)Ce6 octahedra, and  an edgeedge with one Cl(1)Ce5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-59°. In the second Cl site, Cl(2) is bonded in a distorted rectangular see-saw-like geometry to one Ce(2), one Ce(4), and two equivalent Ce(1) atoms. In the third Cl site, Cl(3) is bonded to two equivalent Ce(2), two equivalent Ce(3), and two equivalent Ce(4) atoms to form distorted ClCe6 octahedra that share corners with two equivalent C(1)Ce5C octahedra, edges with two equivalent C(1)Ce5C octahedra, and edges with four equivalent Cl(1)Ce5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 21°. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ce8C8Cl5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.548
_cell_length_b   6.654
_cell_length_c   7.589
_cell_angle_alpha   75.457
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   808.885
_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
  Ce  Ce0  1  0.306  0.371  0.076  1.0
  Ce  Ce1  1  0.068  0.380  0.150  1.0
  Ce  Ce2  1  0.949  0.888  0.220  1.0
  Ce  Ce3  1  0.051  0.112  0.780  1.0
  Ce  Ce4  1  0.694  0.629  0.924  1.0
  Ce  Ce5  1  0.449  0.612  0.780  1.0
  Ce  Ce6  1  0.932  0.620  0.850  1.0
  Ce  Ce7  1  0.194  0.871  0.076  1.0
  Ce  Ce8  1  0.673  0.897  0.294  1.0
  Ce  Ce9  1  0.551  0.388  0.220  1.0
  Ce  Ce10  1  0.432  0.880  0.150  1.0
  Ce  Ce11  1  0.327  0.103  0.706  1.0
  Ce  Ce12  1  0.568  0.120  0.850  1.0
  Ce  Ce13  1  0.806  0.129  0.924  1.0
  Ce  Ce14  1  0.173  0.603  0.706  1.0
  Ce  Ce15  1  0.827  0.397  0.294  1.0
  C  C16  1  0.660  0.233  0.038  1.0
  C  C17  1  0.284  0.716  0.845  1.0
  C  C18  1  0.840  0.733  0.038  1.0
  C  C19  1  0.716  0.284  0.155  1.0
  C  C20  1  0.539  0.723  0.970  1.0
  C  C21  1  0.340  0.767  0.962  1.0
  C  C22  1  0.216  0.216  0.845  1.0
  C  C23  1  0.461  0.277  0.030  1.0
  C  C24  1  0.086  0.721  0.897  1.0
  C  C25  1  0.039  0.777  0.030  1.0
  C  C26  1  0.914  0.279  0.103  1.0
  C  C27  1  0.586  0.779  0.103  1.0
  C  C28  1  0.784  0.784  0.155  1.0
  C  C29  1  0.160  0.267  0.962  1.0
  C  C30  1  0.961  0.223  0.970  1.0
  C  C31  1  0.414  0.221  0.897  1.0
  Cl  Cl32  1  0.097  0.979  0.415  1.0
  Cl  Cl33  1  0.297  0.975  0.357  1.0
  Cl  Cl34  1  0.203  0.475  0.357  1.0
  Cl  Cl35  1  0.903  0.021  0.585  1.0
  Cl  Cl36  1  0.403  0.479  0.415  1.0
  Cl  Cl37  1  0.797  0.525  0.643  1.0
  Cl  Cl38  1  0.500  0.000  0.500  1.0
  Cl  Cl39  1  0.597  0.521  0.585  1.0
  Cl  Cl40  1  0.000  0.500  0.500  1.0
  Cl  Cl41  1  0.703  0.025  0.643  1.0
[/CIF]
.