The crystal structure described by La3C3Cl2 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one C(2), one C(3), two equivalent C(1), one Cl(1), and two equivalent Cl(2) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to two equivalent C(1), two equivalent C(2), two equivalent C(3), one Cl(2), and two equivalent Cl(1) atoms. In the third La site, La(3) is bonded in a 8-coordinate geometry to one C(1), two equivalent C(2), two equivalent C(3), one Cl(1), and two equivalent Cl(2) atoms. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(3), two equivalent La(1), two equivalent La(2), and one C(2) atom. In the second C site, C(2) is bonded to one La(1), two equivalent La(2), two equivalent La(3), and one C(1) atom to form distorted CLa5C octahedra that share corners with two equivalent C(2)La5C octahedra, corners with four equivalent Cl(2)La5 trigonal bipyramids,  an edgeedge with one C(2)La5C octahedra, and edges with two equivalent Cl(2)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 66°. In the third C site, C(3) is bonded in a 6-coordinate geometry to one La(1), two equivalent La(2), two equivalent La(3), and one C(3) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a rectangular see-saw-like geometry to one La(1), one La(3), and two equivalent La(2) atoms. In the second Cl site, Cl(2) is bonded to one La(2), two equivalent La(1), and two equivalent La(3) atoms to form distorted ClLa5 trigonal bipyramids that share corners with four equivalent C(2)La5C octahedra, edges with two equivalent C(2)La5C octahedra, and edges with two equivalent Cl(2)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 27-58°. is represented by the CIF file [CIF]
data_La3C3Cl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.906
_cell_length_b   6.991
_cell_length_c   7.830
_cell_angle_alpha   75.319
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   683.438
_cell_formula_units_Z   4
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  0.150  0.137  0.264  1.0
  La  La1  1  0.650  0.363  0.736  1.0
  La  La2  1  0.179  0.868  0.881  1.0
  La  La3  1  0.992  0.624  0.190  1.0
  La  La4  1  0.508  0.124  0.190  1.0
  La  La5  1  0.321  0.368  0.881  1.0
  La  La6  1  0.821  0.132  0.119  1.0
  La  La7  1  0.350  0.637  0.264  1.0
  La  La8  1  0.679  0.632  0.119  1.0
  La  La9  1  0.492  0.876  0.810  1.0
  La  La10  1  0.850  0.863  0.736  1.0
  La  La11  1  0.008  0.376  0.810  1.0
  C  C12  1  0.296  0.024  0.114  1.0
  C  C13  1  0.632  0.025  0.995  1.0
  C  C14  1  0.796  0.476  0.886  1.0
  C  C15  1  0.868  0.525  0.995  1.0
  C  C16  1  0.470  0.529  0.059  1.0
  C  C17  1  0.704  0.976  0.886  1.0
  C  C18  1  0.132  0.475  0.005  1.0
  C  C19  1  0.204  0.524  0.114  1.0
  C  C20  1  0.530  0.471  0.941  1.0
  C  C21  1  0.030  0.029  0.059  1.0
  C  C22  1  0.970  0.971  0.941  1.0
  C  C23  1  0.368  0.975  0.005  1.0
  Cl  Cl24  1  0.314  0.768  0.614  1.0
  Cl  Cl25  1  0.557  0.738  0.450  1.0
  Cl  Cl26  1  0.443  0.262  0.550  1.0
  Cl  Cl27  1  0.186  0.268  0.614  1.0
  Cl  Cl28  1  0.943  0.238  0.450  1.0
  Cl  Cl29  1  0.814  0.732  0.386  1.0
  Cl  Cl30  1  0.057  0.762  0.550  1.0
  Cl  Cl31  1  0.686  0.232  0.386  1.0
[/CIF]
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The crystal structure described by La3C3Cl2 crystallizes in the monoclinic P2_1/c space group. There are three inequivalent La sites. In the first La site, La(1) is bonded in a 7-coordinate geometry to one C(2), one C(3), two equivalent C(1), one Cl(1), and two equivalent Cl(2) atoms. In the second La site, La(2) is bonded in a 9-coordinate geometry to two equivalent C(1), two equivalent C(2), two equivalent C(3), one Cl(2), and two equivalent Cl(1) atoms. In the third La site, La(3) is bonded in a 8-coordinate geometry to one C(1), two equivalent C(2), two equivalent C(3), one Cl(1), and two equivalent Cl(2) atoms. There are three inequivalent C sites. In the first C site, C(1) is bonded in a 6-coordinate geometry to one La(3), two equivalent La(1), two equivalent La(2), and one C(2) atom. In the second C site, C(2) is bonded to one La(1), two equivalent La(2), two equivalent La(3), and one C(1) atom to form distorted CLa5C octahedra that share corners with two equivalent C(2)La5C octahedra, corners with four equivalent Cl(2)La5 trigonal bipyramids,  an edgeedge with one C(2)La5C octahedra, and edges with two equivalent Cl(2)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles are 66°. In the third C site, C(3) is bonded in a 6-coordinate geometry to one La(1), two equivalent La(2), two equivalent La(3), and one C(3) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a rectangular see-saw-like geometry to one La(1), one La(3), and two equivalent La(2) atoms. In the second Cl site, Cl(2) is bonded to one La(2), two equivalent La(1), and two equivalent La(3) atoms to form distorted ClLa5 trigonal bipyramids that share corners with four equivalent C(2)La5C octahedra, edges with two equivalent C(2)La5C octahedra, and edges with two equivalent Cl(2)La5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 27-58°. is represented by the CIF file [CIF]
data_La3C3Cl2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.906
_cell_length_b   6.991
_cell_length_c   7.830
_cell_angle_alpha   75.319
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   683.438
_cell_formula_units_Z   4
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  0.150  0.137  0.264  1.0
  La  La1  1  0.650  0.363  0.736  1.0
  La  La2  1  0.179  0.868  0.881  1.0
  La  La3  1  0.992  0.624  0.190  1.0
  La  La4  1  0.508  0.124  0.190  1.0
  La  La5  1  0.321  0.368  0.881  1.0
  La  La6  1  0.821  0.132  0.119  1.0
  La  La7  1  0.350  0.637  0.264  1.0
  La  La8  1  0.679  0.632  0.119  1.0
  La  La9  1  0.492  0.876  0.810  1.0
  La  La10  1  0.850  0.863  0.736  1.0
  La  La11  1  0.008  0.376  0.810  1.0
  C  C12  1  0.296  0.024  0.114  1.0
  C  C13  1  0.632  0.025  0.995  1.0
  C  C14  1  0.796  0.476  0.886  1.0
  C  C15  1  0.868  0.525  0.995  1.0
  C  C16  1  0.470  0.529  0.059  1.0
  C  C17  1  0.704  0.976  0.886  1.0
  C  C18  1  0.132  0.475  0.005  1.0
  C  C19  1  0.204  0.524  0.114  1.0
  C  C20  1  0.530  0.471  0.941  1.0
  C  C21  1  0.030  0.029  0.059  1.0
  C  C22  1  0.970  0.971  0.941  1.0
  C  C23  1  0.368  0.975  0.005  1.0
  Cl  Cl24  1  0.314  0.768  0.614  1.0
  Cl  Cl25  1  0.557  0.738  0.450  1.0
  Cl  Cl26  1  0.443  0.262  0.550  1.0
  Cl  Cl27  1  0.186  0.268  0.614  1.0
  Cl  Cl28  1  0.943  0.238  0.450  1.0
  Cl  Cl29  1  0.814  0.732  0.386  1.0
  Cl  Cl30  1  0.057  0.762  0.550  1.0
  Cl  Cl31  1  0.686  0.232  0.386  1.0
[/CIF]
.