The compound described by La4C2I5 crystallizes in the monoclinic C2/m space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to four equivalent C(1), one I(1), one I(3), and two equivalent I(2) atoms. In the second La site, La(2) is bonded to one C(1), two equivalent I(1), and three equivalent I(3) atoms to form distorted edge-sharing LaCI5 octahedra. C(1) is bonded in a 6-coordinate geometry to one La(2), four equivalent La(1), and one C(1) atom. There are three inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one La(1) and two equivalent La(2) atoms. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to four equivalent La(1) atoms. In the third I site, I(3) is bonded in a rectangular see-saw-like geometry to one La(1) and three equivalent La(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_La4C2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.410
_cell_length_b   10.410
_cell_length_c   8.976
_cell_angle_alpha   76.557
_cell_angle_beta   76.557
_cell_angle_gamma   22.917
_symmetry_Int_Tables_number   1
_cell_volume   367.981
_cell_formula_units_Z   1
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
  La  La0  1  0.500  0.500  0.808  1.0
  La  La1  1  0.500  0.500  0.192  1.0
  La  La2  1  0.152  0.152  0.915  1.0
  La  La3  1  0.848  0.848  0.085  1.0
  C  C4  1  0.035  0.035  0.981  1.0
  C  C5  1  0.965  0.965  0.019  1.0
  I  I6  1  0.663  0.663  0.637  1.0
  I  I7  1  0.337  0.337  0.363  1.0
  I  I8  1  0.000  0.000  0.500  1.0
  I  I9  1  0.333  0.333  0.813  1.0
  I  I10  1  0.667  0.667  0.187  1.0
[/CIF]
.
The compound described by La4C2I5 crystallizes in the monoclinic C2/m space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to four equivalent C(1), one I(1), one I(3), and two equivalent I(2) atoms. In the second La site, La(2) is bonded to one C(1), two equivalent I(1), and three equivalent I(3) atoms to form distorted edge-sharing LaCI5 octahedra. C(1) is bonded in a 6-coordinate geometry to one La(2), four equivalent La(1), and one C(1) atom. There are three inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one La(1) and two equivalent La(2) atoms. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to four equivalent La(1) atoms. In the third I site, I(3) is bonded in a rectangular see-saw-like geometry to one La(1) and three equivalent La(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_La4C2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.410
_cell_length_b   10.410
_cell_length_c   8.976
_cell_angle_alpha   76.557
_cell_angle_beta   76.557
_cell_angle_gamma   22.917
_symmetry_Int_Tables_number   1
_cell_volume   367.981
_cell_formula_units_Z   1
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
  La  La0  1  0.500  0.500  0.808  1.0
  La  La1  1  0.500  0.500  0.192  1.0
  La  La2  1  0.152  0.152  0.915  1.0
  La  La3  1  0.848  0.848  0.085  1.0
  C  C4  1  0.035  0.035  0.981  1.0
  C  C5  1  0.965  0.965  0.019  1.0
  I  I6  1  0.663  0.663  0.637  1.0
  I  I7  1  0.337  0.337  0.363  1.0
  I  I8  1  0.000  0.000  0.500  1.0
  I  I9  1  0.333  0.333  0.813  1.0
  I  I10  1  0.667  0.667  0.187  1.0
[/CIF]
.