The compound described by Ce7C3I10 crystallizes in the triclinic P-1 space group. There are seven inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(2), one I(3), one I(5), and one I(7) atom. In the second Ce site, Ce(2) is bonded to one C(2), one I(1), one I(10), one I(3), one I(7), and one I(9) atom to form distorted CeCI5 octahedra that share  a cornercorner with one Ce(3)C2I5 pentagonal bipyramid,  an edgeedge with one Ce(6)CI5 octahedra, and edges with two equivalent Ce(7)CI5 octahedra. In the third Ce site, Ce(3) is bonded to one C(1), one C(3), one I(2), one I(5), one I(6), one I(8), and one I(9) atom to form distorted CeC2I5 pentagonal bipyramids that share  a cornercorner with one Ce(2)CI5 octahedra, corners with two equivalent Ce(5)C2I5 pentagonal bipyramids,  an edgeedge with one Ce(7)CI5 octahedra, edges with two equivalent Ce(6)CI5 octahedra, and  a faceface with one Ce(5)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 13°. In the fourth Ce site, Ce(4) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(1), one I(10), and two equivalent I(2) atoms. In the fifth Ce site, Ce(5) is bonded to one C(1), one C(3), one I(5), one I(6), one I(8), and two equivalent I(4) atoms to form distorted CeC2I5 pentagonal bipyramids that share  a cornercorner with one Ce(7)CI5 octahedra, corners with two equivalent Ce(3)C2I5 pentagonal bipyramids,  an edgeedge with one Ce(7)CI5 octahedra, edges with two equivalent Ce(6)CI5 octahedra,  an edgeedge with one Ce(5)C2I5 pentagonal bipyramid, and  a faceface with one Ce(3)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 1°. In the sixth Ce site, Ce(6) is bonded to one C(1), one I(10), one I(3), one I(6), and two equivalent I(8) atoms to form distorted CeCI5 octahedra that share  an edgeedge with one Ce(2)CI5 octahedra,  an edgeedge with one Ce(6)CI5 octahedra, edges with two equivalent Ce(3)C2I5 pentagonal bipyramids, and edges with two equivalent Ce(5)C2I5 pentagonal bipyramids. In the seventh Ce site, Ce(7) is bonded to one C(3), one I(4), one I(7), one I(9), and two equivalent I(1) atoms to form distorted CeCI5 octahedra that share  a cornercorner with one Ce(5)C2I5 pentagonal bipyramid,  an edgeedge with one Ce(7)CI5 octahedra, edges with two equivalent Ce(2)CI5 octahedra,  an edgeedge with one Ce(3)C2I5 pentagonal bipyramid, and  an edgeedge with one Ce(5)C2I5 pentagonal bipyramid. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(3), one Ce(4), one Ce(5), one Ce(6), and one C(3) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent Ce(4), and one C(2) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(3), one Ce(4), one Ce(5), one Ce(7), and one C(1) atom. There are ten inequivalent I sites. In the first I site, I(1) is bonded in a rectangular see-saw-like geometry to one Ce(2), one Ce(4), and two equivalent Ce(7) atoms. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to one Ce(1), one Ce(3), and two equivalent Ce(4) atoms. In the third I site, I(3) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ce(6) atom. In the fourth I site, I(4) is bonded in a 3-coordinate geometry to one Ce(7) and two equivalent Ce(5) atoms. In the fifth I site, I(5) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(3), and one Ce(5) atom. In the sixth I site, I(6) is bonded in a distorted T-shaped geometry to one Ce(3), one Ce(5), and one Ce(6) atom. In the seventh I site, I(7) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ce(7) atom. In the eighth I site, I(8) is bonded in a rectangular see-saw-like geometry to one Ce(3), one Ce(5), and two equivalent Ce(6) atoms. In the ninth I site, I(9) is bonded in a T-shaped geometry to one Ce(2), one Ce(3), and one Ce(7) atom. In the tenth I site, I(10) is bonded in a 3-coordinate geometry to one Ce(2), one Ce(4), and one Ce(6) atom. is represented by the CIF card [CIF]
data_Ce7C3I10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.734
_cell_length_b   11.714
_cell_length_c   13.892
_cell_angle_alpha   79.579
_cell_angle_beta   71.265
_cell_angle_gamma   66.172
_symmetry_Int_Tables_number   1
_cell_volume   1369.761
_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  0.955  0.114  0.827  1.0
  Ce  Ce1  1  0.834  0.244  0.099  1.0
  Ce  Ce2  1  0.545  0.795  0.307  1.0
  Ce  Ce3  1  0.248  0.052  0.920  1.0
  Ce  Ce4  1  0.136  0.274  0.587  1.0
  Ce  Ce5  1  0.377  0.927  0.641  1.0
  Ce  Ce6  1  0.752  0.948  0.080  1.0
  Ce  Ce7  1  0.957  0.582  0.160  1.0
  Ce  Ce8  1  0.043  0.418  0.840  1.0
  Ce  Ce9  1  0.455  0.205  0.693  1.0
  Ce  Ce10  1  0.166  0.756  0.901  1.0
  Ce  Ce11  1  0.623  0.073  0.359  1.0
  Ce  Ce12  1  0.045  0.886  0.173  1.0
  Ce  Ce13  1  0.864  0.726  0.413  1.0
  C  C14  1  0.243  0.110  0.725  1.0
  C  C15  1  0.039  0.943  0.977  1.0
  C  C16  1  0.961  0.057  0.023  1.0
  C  C17  1  0.165  0.226  0.772  1.0
  C  C18  1  0.757  0.890  0.275  1.0
  C  C19  1  0.835  0.774  0.228  1.0
  I  I20  1  0.853  0.697  0.955  1.0
  I  I21  1  0.393  0.921  0.121  1.0
  I  I22  1  0.932  0.130  0.304  1.0
  I  I23  1  0.959  0.565  0.638  1.0
  I  I24  1  0.187  0.753  0.373  1.0
  I  I25  1  0.438  0.344  0.476  1.0
  I  I26  1  0.716  0.391  0.908  1.0
  I  I27  1  0.286  0.047  0.430  1.0
  I  I28  1  0.714  0.953  0.570  1.0
  I  I29  1  0.041  0.435  0.362  1.0
  I  I30  1  0.352  0.478  0.776  1.0
  I  I31  1  0.648  0.522  0.224  1.0
  I  I32  1  0.562  0.656  0.524  1.0
  I  I33  1  0.504  0.219  0.168  1.0
  I  I34  1  0.068  0.870  0.696  1.0
  I  I35  1  0.147  0.303  0.045  1.0
  I  I36  1  0.813  0.247  0.627  1.0
  I  I37  1  0.607  0.079  0.879  1.0
  I  I38  1  0.496  0.781  0.832  1.0
  I  I39  1  0.284  0.609  0.092  1.0
[/CIF]
.
The compound described by Ce7C3I10 crystallizes in the triclinic P-1 space group. There are seven inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(2), one I(3), one I(5), and one I(7) atom. In the second Ce site, Ce(2) is bonded to one C(2), one I(1), one I(10), one I(3), one I(7), and one I(9) atom to form distorted CeCI5 octahedra that share  a cornercorner with one Ce(3)C2I5 pentagonal bipyramid,  an edgeedge with one Ce(6)CI5 octahedra, and edges with two equivalent Ce(7)CI5 octahedra. In the third Ce site, Ce(3) is bonded to one C(1), one C(3), one I(2), one I(5), one I(6), one I(8), and one I(9) atom to form distorted CeC2I5 pentagonal bipyramids that share  a cornercorner with one Ce(2)CI5 octahedra, corners with two equivalent Ce(5)C2I5 pentagonal bipyramids,  an edgeedge with one Ce(7)CI5 octahedra, edges with two equivalent Ce(6)CI5 octahedra, and  a faceface with one Ce(5)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 13°. In the fourth Ce site, Ce(4) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(1), one I(10), and two equivalent I(2) atoms. In the fifth Ce site, Ce(5) is bonded to one C(1), one C(3), one I(5), one I(6), one I(8), and two equivalent I(4) atoms to form distorted CeC2I5 pentagonal bipyramids that share  a cornercorner with one Ce(7)CI5 octahedra, corners with two equivalent Ce(3)C2I5 pentagonal bipyramids,  an edgeedge with one Ce(7)CI5 octahedra, edges with two equivalent Ce(6)CI5 octahedra,  an edgeedge with one Ce(5)C2I5 pentagonal bipyramid, and  a faceface with one Ce(3)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 1°. In the sixth Ce site, Ce(6) is bonded to one C(1), one I(10), one I(3), one I(6), and two equivalent I(8) atoms to form distorted CeCI5 octahedra that share  an edgeedge with one Ce(2)CI5 octahedra,  an edgeedge with one Ce(6)CI5 octahedra, edges with two equivalent Ce(3)C2I5 pentagonal bipyramids, and edges with two equivalent Ce(5)C2I5 pentagonal bipyramids. In the seventh Ce site, Ce(7) is bonded to one C(3), one I(4), one I(7), one I(9), and two equivalent I(1) atoms to form distorted CeCI5 octahedra that share  a cornercorner with one Ce(5)C2I5 pentagonal bipyramid,  an edgeedge with one Ce(7)CI5 octahedra, edges with two equivalent Ce(2)CI5 octahedra,  an edgeedge with one Ce(3)C2I5 pentagonal bipyramid, and  an edgeedge with one Ce(5)C2I5 pentagonal bipyramid. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(3), one Ce(4), one Ce(5), one Ce(6), and one C(3) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent Ce(4), and one C(2) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Ce(1), one Ce(3), one Ce(4), one Ce(5), one Ce(7), and one C(1) atom. There are ten inequivalent I sites. In the first I site, I(1) is bonded in a rectangular see-saw-like geometry to one Ce(2), one Ce(4), and two equivalent Ce(7) atoms. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to one Ce(1), one Ce(3), and two equivalent Ce(4) atoms. In the third I site, I(3) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ce(6) atom. In the fourth I site, I(4) is bonded in a 3-coordinate geometry to one Ce(7) and two equivalent Ce(5) atoms. In the fifth I site, I(5) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(3), and one Ce(5) atom. In the sixth I site, I(6) is bonded in a distorted T-shaped geometry to one Ce(3), one Ce(5), and one Ce(6) atom. In the seventh I site, I(7) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ce(7) atom. In the eighth I site, I(8) is bonded in a rectangular see-saw-like geometry to one Ce(3), one Ce(5), and two equivalent Ce(6) atoms. In the ninth I site, I(9) is bonded in a T-shaped geometry to one Ce(2), one Ce(3), and one Ce(7) atom. In the tenth I site, I(10) is bonded in a 3-coordinate geometry to one Ce(2), one Ce(4), and one Ce(6) atom. is represented by the CIF card [CIF]
data_Ce7C3I10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.734
_cell_length_b   11.714
_cell_length_c   13.892
_cell_angle_alpha   79.579
_cell_angle_beta   71.265
_cell_angle_gamma   66.172
_symmetry_Int_Tables_number   1
_cell_volume   1369.761
_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  0.955  0.114  0.827  1.0
  Ce  Ce1  1  0.834  0.244  0.099  1.0
  Ce  Ce2  1  0.545  0.795  0.307  1.0
  Ce  Ce3  1  0.248  0.052  0.920  1.0
  Ce  Ce4  1  0.136  0.274  0.587  1.0
  Ce  Ce5  1  0.377  0.927  0.641  1.0
  Ce  Ce6  1  0.752  0.948  0.080  1.0
  Ce  Ce7  1  0.957  0.582  0.160  1.0
  Ce  Ce8  1  0.043  0.418  0.840  1.0
  Ce  Ce9  1  0.455  0.205  0.693  1.0
  Ce  Ce10  1  0.166  0.756  0.901  1.0
  Ce  Ce11  1  0.623  0.073  0.359  1.0
  Ce  Ce12  1  0.045  0.886  0.173  1.0
  Ce  Ce13  1  0.864  0.726  0.413  1.0
  C  C14  1  0.243  0.110  0.725  1.0
  C  C15  1  0.039  0.943  0.977  1.0
  C  C16  1  0.961  0.057  0.023  1.0
  C  C17  1  0.165  0.226  0.772  1.0
  C  C18  1  0.757  0.890  0.275  1.0
  C  C19  1  0.835  0.774  0.228  1.0
  I  I20  1  0.853  0.697  0.955  1.0
  I  I21  1  0.393  0.921  0.121  1.0
  I  I22  1  0.932  0.130  0.304  1.0
  I  I23  1  0.959  0.565  0.638  1.0
  I  I24  1  0.187  0.753  0.373  1.0
  I  I25  1  0.438  0.344  0.476  1.0
  I  I26  1  0.716  0.391  0.908  1.0
  I  I27  1  0.286  0.047  0.430  1.0
  I  I28  1  0.714  0.953  0.570  1.0
  I  I29  1  0.041  0.435  0.362  1.0
  I  I30  1  0.352  0.478  0.776  1.0
  I  I31  1  0.648  0.522  0.224  1.0
  I  I32  1  0.562  0.656  0.524  1.0
  I  I33  1  0.504  0.219  0.168  1.0
  I  I34  1  0.068  0.870  0.696  1.0
  I  I35  1  0.147  0.303  0.045  1.0
  I  I36  1  0.813  0.247  0.627  1.0
  I  I37  1  0.607  0.079  0.879  1.0
  I  I38  1  0.496  0.781  0.832  1.0
  I  I39  1  0.284  0.609  0.092  1.0
[/CIF]
.