The structure described by La7C3I10 crystallizes in the triclinic P-1 space group. There are seven inequivalent La sites. In the first La site, La(1) is bonded to one C(1), one I(1), one I(4), one I(8), and two equivalent I(2) atoms to form distorted LaCI5 octahedra that share  a cornercorner with one La(6)C2I5 pentagonal bipyramid,  an edgeedge with one La(1)CI5 octahedra, edges with two equivalent La(2)CI5 octahedra,  an edgeedge with one La(6)C2I5 pentagonal bipyramid, and  an edgeedge with one La(7)C2I5 pentagonal bipyramid. In the second La site, La(2) is bonded to one C(2), one I(10), one I(2), one I(4), one I(8), and one I(9) atom to form distorted LaCI5 octahedra that share  a cornercorner with one La(7)C2I5 pentagonal bipyramid,  an edgeedge with one La(4)CI5 octahedra, and edges with two equivalent La(1)CI5 octahedra. In the third La site, La(3) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(3), one I(7), one I(8), and one I(9) atom. In the fourth La site, La(4) is bonded to one C(3), one I(10), one I(5), one I(9), and two equivalent I(6) atoms to form distorted LaCI5 octahedra that share  an edgeedge with one La(2)CI5 octahedra,  an edgeedge with one La(4)CI5 octahedra, edges with two equivalent La(6)C2I5 pentagonal bipyramids, and edges with two equivalent La(7)C2I5 pentagonal bipyramids. In the fifth La site, La(5) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(10), one I(2), and two equivalent I(3) atoms. In the sixth La site, La(6) is bonded to one C(1), one C(3), one I(5), one I(6), one I(7), and two equivalent I(1) atoms to form distorted LaC2I5 pentagonal bipyramids that share  a cornercorner with one La(1)CI5 octahedra, corners with two equivalent La(7)C2I5 pentagonal bipyramids,  an edgeedge with one La(1)CI5 octahedra, edges with two equivalent La(4)CI5 octahedra,  an edgeedge with one La(6)C2I5 pentagonal bipyramid, and  a faceface with one La(7)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 1°. In the seventh La site, La(7) is bonded to one C(1), one C(3), one I(3), one I(4), one I(5), one I(6), and one I(7) atom to form distorted LaC2I5 pentagonal bipyramids that share  a cornercorner with one La(2)CI5 octahedra, corners with two equivalent La(6)C2I5 pentagonal bipyramids,  an edgeedge with one La(1)CI5 octahedra, edges with two equivalent La(4)CI5 octahedra, and  a faceface with one La(6)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 12°. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(1), one La(3), one La(5), one La(6), one La(7), and one C(3) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one La(2), two equivalent La(3), two equivalent La(5), and one C(2) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one La(3), one La(4), one La(5), one La(6), one La(7), and one C(1) atom. There are ten 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(6) atoms. In the second I site, I(2) is bonded in a rectangular see-saw-like geometry to one La(2), one La(5), and two equivalent La(1) atoms. In the third I site, I(3) is bonded in a distorted rectangular see-saw-like geometry to one La(3), one La(7), and two equivalent La(5) atoms. In the fourth I site, I(4) is bonded in a distorted T-shaped geometry to one La(1), one La(2), and one La(7) atom. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one La(4), one La(6), and one La(7) atom. In the sixth I site, I(6) is bonded in a rectangular see-saw-like geometry to one La(6), one La(7), and two equivalent La(4) atoms. In the seventh I site, I(7) is bonded in a 3-coordinate geometry to one La(3), one La(6), and one La(7) atom. In the eighth I site, I(8) is bonded in a distorted T-shaped geometry to one La(1), one La(2), and one La(3) atom. In the ninth I site, I(9) is bonded in a 3-coordinate geometry to one La(2), one La(3), and one La(4) atom. In the tenth I site, I(10) is bonded in a 3-coordinate geometry to one La(2), one La(4), and one La(5) atom. is represented by the CIF file [CIF]
data_La7C3I10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.867
_cell_length_b   11.921
_cell_length_c   14.191
_cell_angle_alpha   79.481
_cell_angle_beta   71.306
_cell_angle_gamma   65.885
_symmetry_Int_Tables_number   1
_cell_volume   1440.595
_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
  La  La0  1  0.044  0.420  0.835  1.0
  La  La1  1  0.831  0.243  0.100  1.0
  La  La2  1  0.050  0.885  0.175  1.0
  La  La3  1  0.378  0.928  0.641  1.0
  La  La4  1  0.746  0.951  0.079  1.0
  La  La5  1  0.254  0.049  0.921  1.0
  La  La6  1  0.868  0.723  0.414  1.0
  La  La7  1  0.132  0.277  0.586  1.0
  La  La8  1  0.950  0.115  0.825  1.0
  La  La9  1  0.540  0.793  0.308  1.0
  La  La10  1  0.956  0.580  0.165  1.0
  La  La11  1  0.460  0.207  0.692  1.0
  La  La12  1  0.622  0.072  0.359  1.0
  La  La13  1  0.169  0.757  0.900  1.0
  C  C14  1  0.168  0.226  0.769  1.0
  C  C15  1  0.961  0.057  0.023  1.0
  C  C16  1  0.755  0.887  0.276  1.0
  C  C17  1  0.245  0.113  0.724  1.0
  C  C18  1  0.039  0.943  0.977  1.0
  C  C19  1  0.832  0.774  0.231  1.0
  I  I20  1  0.044  0.433  0.364  1.0
  I  I21  1  0.144  0.305  0.042  1.0
  I  I22  1  0.605  0.079  0.878  1.0
  I  I23  1  0.647  0.523  0.224  1.0
  I  I24  1  0.435  0.344  0.478  1.0
  I  I25  1  0.565  0.656  0.522  1.0
  I  I26  1  0.282  0.047  0.431  1.0
  I  I27  1  0.395  0.921  0.122  1.0
  I  I28  1  0.856  0.695  0.958  1.0
  I  I29  1  0.188  0.753  0.375  1.0
  I  I30  1  0.714  0.393  0.908  1.0
  I  I31  1  0.353  0.477  0.776  1.0
  I  I32  1  0.286  0.607  0.092  1.0
  I  I33  1  0.930  0.132  0.304  1.0
  I  I34  1  0.070  0.868  0.696  1.0
  I  I35  1  0.499  0.220  0.169  1.0
  I  I36  1  0.718  0.953  0.569  1.0
  I  I37  1  0.956  0.567  0.636  1.0
  I  I38  1  0.812  0.247  0.625  1.0
  I  I39  1  0.501  0.780  0.831  1.0
[/CIF]
.
The structure described by La7C3I10 crystallizes in the triclinic P-1 space group. There are seven inequivalent La sites. In the first La site, La(1) is bonded to one C(1), one I(1), one I(4), one I(8), and two equivalent I(2) atoms to form distorted LaCI5 octahedra that share  a cornercorner with one La(6)C2I5 pentagonal bipyramid,  an edgeedge with one La(1)CI5 octahedra, edges with two equivalent La(2)CI5 octahedra,  an edgeedge with one La(6)C2I5 pentagonal bipyramid, and  an edgeedge with one La(7)C2I5 pentagonal bipyramid. In the second La site, La(2) is bonded to one C(2), one I(10), one I(2), one I(4), one I(8), and one I(9) atom to form distorted LaCI5 octahedra that share  a cornercorner with one La(7)C2I5 pentagonal bipyramid,  an edgeedge with one La(4)CI5 octahedra, and edges with two equivalent La(1)CI5 octahedra. In the third La site, La(3) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(3), one I(7), one I(8), and one I(9) atom. In the fourth La site, La(4) is bonded to one C(3), one I(10), one I(5), one I(9), and two equivalent I(6) atoms to form distorted LaCI5 octahedra that share  an edgeedge with one La(2)CI5 octahedra,  an edgeedge with one La(4)CI5 octahedra, edges with two equivalent La(6)C2I5 pentagonal bipyramids, and edges with two equivalent La(7)C2I5 pentagonal bipyramids. In the fifth La site, La(5) is bonded in a 8-coordinate geometry to one C(1), one C(3), two equivalent C(2), one I(10), one I(2), and two equivalent I(3) atoms. In the sixth La site, La(6) is bonded to one C(1), one C(3), one I(5), one I(6), one I(7), and two equivalent I(1) atoms to form distorted LaC2I5 pentagonal bipyramids that share  a cornercorner with one La(1)CI5 octahedra, corners with two equivalent La(7)C2I5 pentagonal bipyramids,  an edgeedge with one La(1)CI5 octahedra, edges with two equivalent La(4)CI5 octahedra,  an edgeedge with one La(6)C2I5 pentagonal bipyramid, and  a faceface with one La(7)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 1°. In the seventh La site, La(7) is bonded to one C(1), one C(3), one I(3), one I(4), one I(5), one I(6), and one I(7) atom to form distorted LaC2I5 pentagonal bipyramids that share  a cornercorner with one La(2)CI5 octahedra, corners with two equivalent La(6)C2I5 pentagonal bipyramids,  an edgeedge with one La(1)CI5 octahedra, edges with two equivalent La(4)CI5 octahedra, and  a faceface with one La(6)C2I5 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 12°. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(1), one La(3), one La(5), one La(6), one La(7), and one C(3) atom. In the second C site, C(2) is bonded in a 6-coordinate geometry to one La(2), two equivalent La(3), two equivalent La(5), and one C(2) atom. In the third C site, C(3) is bonded in a 6-coordinate geometry to one La(3), one La(4), one La(5), one La(6), one La(7), and one C(1) atom. There are ten 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(6) atoms. In the second I site, I(2) is bonded in a rectangular see-saw-like geometry to one La(2), one La(5), and two equivalent La(1) atoms. In the third I site, I(3) is bonded in a distorted rectangular see-saw-like geometry to one La(3), one La(7), and two equivalent La(5) atoms. In the fourth I site, I(4) is bonded in a distorted T-shaped geometry to one La(1), one La(2), and one La(7) atom. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one La(4), one La(6), and one La(7) atom. In the sixth I site, I(6) is bonded in a rectangular see-saw-like geometry to one La(6), one La(7), and two equivalent La(4) atoms. In the seventh I site, I(7) is bonded in a 3-coordinate geometry to one La(3), one La(6), and one La(7) atom. In the eighth I site, I(8) is bonded in a distorted T-shaped geometry to one La(1), one La(2), and one La(3) atom. In the ninth I site, I(9) is bonded in a 3-coordinate geometry to one La(2), one La(3), and one La(4) atom. In the tenth I site, I(10) is bonded in a 3-coordinate geometry to one La(2), one La(4), and one La(5) atom. is represented by the CIF file [CIF]
data_La7C3I10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.867
_cell_length_b   11.921
_cell_length_c   14.191
_cell_angle_alpha   79.481
_cell_angle_beta   71.306
_cell_angle_gamma   65.885
_symmetry_Int_Tables_number   1
_cell_volume   1440.595
_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
  La  La0  1  0.044  0.420  0.835  1.0
  La  La1  1  0.831  0.243  0.100  1.0
  La  La2  1  0.050  0.885  0.175  1.0
  La  La3  1  0.378  0.928  0.641  1.0
  La  La4  1  0.746  0.951  0.079  1.0
  La  La5  1  0.254  0.049  0.921  1.0
  La  La6  1  0.868  0.723  0.414  1.0
  La  La7  1  0.132  0.277  0.586  1.0
  La  La8  1  0.950  0.115  0.825  1.0
  La  La9  1  0.540  0.793  0.308  1.0
  La  La10  1  0.956  0.580  0.165  1.0
  La  La11  1  0.460  0.207  0.692  1.0
  La  La12  1  0.622  0.072  0.359  1.0
  La  La13  1  0.169  0.757  0.900  1.0
  C  C14  1  0.168  0.226  0.769  1.0
  C  C15  1  0.961  0.057  0.023  1.0
  C  C16  1  0.755  0.887  0.276  1.0
  C  C17  1  0.245  0.113  0.724  1.0
  C  C18  1  0.039  0.943  0.977  1.0
  C  C19  1  0.832  0.774  0.231  1.0
  I  I20  1  0.044  0.433  0.364  1.0
  I  I21  1  0.144  0.305  0.042  1.0
  I  I22  1  0.605  0.079  0.878  1.0
  I  I23  1  0.647  0.523  0.224  1.0
  I  I24  1  0.435  0.344  0.478  1.0
  I  I25  1  0.565  0.656  0.522  1.0
  I  I26  1  0.282  0.047  0.431  1.0
  I  I27  1  0.395  0.921  0.122  1.0
  I  I28  1  0.856  0.695  0.958  1.0
  I  I29  1  0.188  0.753  0.375  1.0
  I  I30  1  0.714  0.393  0.908  1.0
  I  I31  1  0.353  0.477  0.776  1.0
  I  I32  1  0.286  0.607  0.092  1.0
  I  I33  1  0.930  0.132  0.304  1.0
  I  I34  1  0.070  0.868  0.696  1.0
  I  I35  1  0.499  0.220  0.169  1.0
  I  I36  1  0.718  0.953  0.569  1.0
  I  I37  1  0.956  0.567  0.636  1.0
  I  I38  1  0.812  0.247  0.625  1.0
  I  I39  1  0.501  0.780  0.831  1.0
[/CIF]
.