The material structure described by Dy2CI3 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 7-coordinate geometry to one C(2), two equivalent C(1), one I(1), one I(3), one I(4), and one I(6) atom. In the second Dy site, Dy(2) is bonded to one C(2), two equivalent C(1), one I(2), one I(3), one I(5), and one I(6) atom to form distorted DyC3I4 pentagonal bipyramids that share  a cornercorner with one Dy(4)CI5 octahedra,  a cornercorner with one C(2)Dy4C square pyramid, edges with two equivalent Dy(4)CI5 octahedra, and  an edgeedge with one Dy(2)C3I4 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 47°. In the third Dy site, Dy(3) is bonded in a 7-coordinate geometry to two equivalent C(2), one I(1), one I(2), one I(4), one I(5), and one I(6) atom. In the fourth Dy site, Dy(4) is bonded to one C(1), one I(1), one I(2), one I(3), one I(4), and one I(5) atom to form a mixture of distorted edge and corner-sharing DyCI5 octahedra. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Dy(4), two equivalent Dy(1), two equivalent Dy(2), and one C(1) atom. In the second C site, C(2) is bonded to one Dy(1), one Dy(2), two equivalent Dy(3), and one C(2) atom to form distorted CDy4C square pyramids that share  a cornercorner with one Dy(2)C3I4 pentagonal bipyramid and  an edgeedge with one C(2)Dy4C square pyramid. There are six inequivalent I sites. In the first I site, I(3) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(2), and one Dy(4) atom. In the second I site, I(4) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(3), and one Dy(4) atom. In the third I site, I(5) is bonded in a distorted T-shaped geometry to one Dy(2), one Dy(3), and one Dy(4) atom. In the fourth I site, I(6) is bonded in a 3-coordinate geometry to one Dy(1), one Dy(2), and one Dy(3) atom. In the fifth I site, I(1) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(3), and one Dy(4) atom. In the sixth I site, I(2) is bonded in a distorted T-shaped geometry to one Dy(2), one Dy(3), and one Dy(4) atom. is represented by the CIF file [CIF]
data_Dy2CI3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.792
_cell_length_b   8.451
_cell_length_c   16.764
_cell_angle_alpha   59.958
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1691.371
_cell_formula_units_Z   8
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
  Dy  Dy0  1  0.598  0.142  0.573  1.0
  Dy  Dy1  1  0.409  0.279  0.431  1.0
  Dy  Dy2  1  0.098  0.858  0.927  1.0
  Dy  Dy3  1  0.909  0.721  0.069  1.0
  Dy  Dy4  1  0.402  0.858  0.427  1.0
  Dy  Dy5  1  0.591  0.721  0.569  1.0
  Dy  Dy6  1  0.902  0.142  0.073  1.0
  Dy  Dy7  1  0.091  0.279  0.931  1.0
  Dy  Dy8  1  0.603  0.622  0.377  1.0
  Dy  Dy9  1  0.397  0.378  0.623  1.0
  Dy  Dy10  1  0.103  0.378  0.123  1.0
  Dy  Dy11  1  0.897  0.622  0.877  1.0
  Dy  Dy12  1  0.369  0.843  0.658  1.0
  Dy  Dy13  1  0.631  0.157  0.342  1.0
  Dy  Dy14  1  0.869  0.157  0.842  1.0
  Dy  Dy15  1  0.131  0.843  0.158  1.0
  C  C16  1  0.468  0.962  0.538  1.0
  C  C17  1  0.532  0.038  0.462  1.0
  C  C18  1  0.968  0.038  0.962  1.0
  C  C19  1  0.032  0.962  0.038  1.0
  C  C20  1  0.518  0.411  0.514  1.0
  C  C21  1  0.018  0.589  0.986  1.0
  C  C22  1  0.482  0.589  0.486  1.0
  C  C23  1  0.982  0.411  0.014  1.0
  I  I24  1  0.762  0.327  0.426  1.0
  I  I25  1  0.240  0.187  0.572  1.0
  I  I26  1  0.262  0.673  0.074  1.0
  I  I27  1  0.740  0.813  0.928  1.0
  I  I28  1  0.238  0.673  0.574  1.0
  I  I29  1  0.760  0.813  0.428  1.0
  I  I30  1  0.738  0.327  0.926  1.0
  I  I31  1  0.260  0.187  0.072  1.0
  I  I32  1  0.727  0.334  0.667  1.0
  I  I33  1  0.273  0.666  0.333  1.0
  I  I34  1  0.227  0.666  0.833  1.0
  I  I35  1  0.773  0.334  0.167  1.0
  I  I36  1  0.484  0.996  0.760  1.0
  I  I37  1  0.513  0.513  0.243  1.0
  I  I38  1  0.984  0.004  0.740  1.0
  I  I39  1  0.013  0.487  0.257  1.0
  I  I40  1  0.516  0.004  0.240  1.0
  I  I41  1  0.487  0.487  0.757  1.0
  I  I42  1  0.016  0.996  0.260  1.0
  I  I43  1  0.987  0.513  0.743  1.0
  I  I44  1  0.740  0.817  0.677  1.0
  I  I45  1  0.260  0.183  0.323  1.0
  I  I46  1  0.240  0.183  0.823  1.0
  I  I47  1  0.760  0.817  0.177  1.0
[/CIF]
.
The material structure described by Dy2CI3 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Dy sites. In the first Dy site, Dy(1) is bonded in a 7-coordinate geometry to one C(2), two equivalent C(1), one I(1), one I(3), one I(4), and one I(6) atom. In the second Dy site, Dy(2) is bonded to one C(2), two equivalent C(1), one I(2), one I(3), one I(5), and one I(6) atom to form distorted DyC3I4 pentagonal bipyramids that share  a cornercorner with one Dy(4)CI5 octahedra,  a cornercorner with one C(2)Dy4C square pyramid, edges with two equivalent Dy(4)CI5 octahedra, and  an edgeedge with one Dy(2)C3I4 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 47°. In the third Dy site, Dy(3) is bonded in a 7-coordinate geometry to two equivalent C(2), one I(1), one I(2), one I(4), one I(5), and one I(6) atom. In the fourth Dy site, Dy(4) is bonded to one C(1), one I(1), one I(2), one I(3), one I(4), and one I(5) atom to form a mixture of distorted edge and corner-sharing DyCI5 octahedra. There are two inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one Dy(4), two equivalent Dy(1), two equivalent Dy(2), and one C(1) atom. In the second C site, C(2) is bonded to one Dy(1), one Dy(2), two equivalent Dy(3), and one C(2) atom to form distorted CDy4C square pyramids that share  a cornercorner with one Dy(2)C3I4 pentagonal bipyramid and  an edgeedge with one C(2)Dy4C square pyramid. There are six inequivalent I sites. In the first I site, I(3) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(2), and one Dy(4) atom. In the second I site, I(4) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(3), and one Dy(4) atom. In the third I site, I(5) is bonded in a distorted T-shaped geometry to one Dy(2), one Dy(3), and one Dy(4) atom. In the fourth I site, I(6) is bonded in a 3-coordinate geometry to one Dy(1), one Dy(2), and one Dy(3) atom. In the fifth I site, I(1) is bonded in a distorted T-shaped geometry to one Dy(1), one Dy(3), and one Dy(4) atom. In the sixth I site, I(2) is bonded in a distorted T-shaped geometry to one Dy(2), one Dy(3), and one Dy(4) atom. is represented by the CIF file [CIF]
data_Dy2CI3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.792
_cell_length_b   8.451
_cell_length_c   16.764
_cell_angle_alpha   59.958
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1691.371
_cell_formula_units_Z   8
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
  Dy  Dy0  1  0.598  0.142  0.573  1.0
  Dy  Dy1  1  0.409  0.279  0.431  1.0
  Dy  Dy2  1  0.098  0.858  0.927  1.0
  Dy  Dy3  1  0.909  0.721  0.069  1.0
  Dy  Dy4  1  0.402  0.858  0.427  1.0
  Dy  Dy5  1  0.591  0.721  0.569  1.0
  Dy  Dy6  1  0.902  0.142  0.073  1.0
  Dy  Dy7  1  0.091  0.279  0.931  1.0
  Dy  Dy8  1  0.603  0.622  0.377  1.0
  Dy  Dy9  1  0.397  0.378  0.623  1.0
  Dy  Dy10  1  0.103  0.378  0.123  1.0
  Dy  Dy11  1  0.897  0.622  0.877  1.0
  Dy  Dy12  1  0.369  0.843  0.658  1.0
  Dy  Dy13  1  0.631  0.157  0.342  1.0
  Dy  Dy14  1  0.869  0.157  0.842  1.0
  Dy  Dy15  1  0.131  0.843  0.158  1.0
  C  C16  1  0.468  0.962  0.538  1.0
  C  C17  1  0.532  0.038  0.462  1.0
  C  C18  1  0.968  0.038  0.962  1.0
  C  C19  1  0.032  0.962  0.038  1.0
  C  C20  1  0.518  0.411  0.514  1.0
  C  C21  1  0.018  0.589  0.986  1.0
  C  C22  1  0.482  0.589  0.486  1.0
  C  C23  1  0.982  0.411  0.014  1.0
  I  I24  1  0.762  0.327  0.426  1.0
  I  I25  1  0.240  0.187  0.572  1.0
  I  I26  1  0.262  0.673  0.074  1.0
  I  I27  1  0.740  0.813  0.928  1.0
  I  I28  1  0.238  0.673  0.574  1.0
  I  I29  1  0.760  0.813  0.428  1.0
  I  I30  1  0.738  0.327  0.926  1.0
  I  I31  1  0.260  0.187  0.072  1.0
  I  I32  1  0.727  0.334  0.667  1.0
  I  I33  1  0.273  0.666  0.333  1.0
  I  I34  1  0.227  0.666  0.833  1.0
  I  I35  1  0.773  0.334  0.167  1.0
  I  I36  1  0.484  0.996  0.760  1.0
  I  I37  1  0.513  0.513  0.243  1.0
  I  I38  1  0.984  0.004  0.740  1.0
  I  I39  1  0.013  0.487  0.257  1.0
  I  I40  1  0.516  0.004  0.240  1.0
  I  I41  1  0.487  0.487  0.757  1.0
  I  I42  1  0.016  0.996  0.260  1.0
  I  I43  1  0.987  0.513  0.743  1.0
  I  I44  1  0.740  0.817  0.677  1.0
  I  I45  1  0.260  0.183  0.323  1.0
  I  I46  1  0.240  0.183  0.823  1.0
  I  I47  1  0.760  0.817  0.177  1.0
[/CIF]
.