The material described by Al11La3 crystallizes in the orthorhombic Immm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to four equivalent Al(2), four equivalent Al(4), and eight equivalent Al(3) atoms to form distorted LaAl16 cuboctahedra that share corners with four equivalent Al(1)La4Al8 cuboctahedra, faces with two equivalent La(1)Al16 cuboctahedra, faces with two equivalent Al(1)La4Al8 cuboctahedra, and faces with four equivalent Al(2)La4Al8 cuboctahedra. In the second La site, La(2) is bonded in a 12-coordinate geometry to two equivalent Al(1), two equivalent Al(2), four equivalent Al(3), and six equivalent Al(4) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent La(2), four equivalent Al(2), and four equivalent Al(4) atoms to form distorted AlLa4Al8 cuboctahedra that share corners with four equivalent La(1)Al16 cuboctahedra, faces with two equivalent La(1)Al16 cuboctahedra, faces with two equivalent Al(1)La4Al8 cuboctahedra, and faces with four equivalent Al(2)La4Al8 cuboctahedra. In the second Al site, Al(2) is bonded to two equivalent La(1), two equivalent La(2), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(4) atoms to form distorted AlLa4Al8 cuboctahedra that share corners with four equivalent Al(2)La4Al8 cuboctahedra,  an edgeedge with one Al(2)La4Al8 cuboctahedra, faces with two equivalent La(1)Al16 cuboctahedra, faces with two equivalent Al(1)La4Al8 cuboctahedra, and faces with three equivalent Al(2)La4Al8 cuboctahedra. In the third Al site, Al(3) is bonded in a 9-coordinate geometry to two equivalent La(1), two equivalent La(2), one Al(2), one Al(3), and three equivalent Al(4) atoms. In the fourth Al site, Al(4) is bonded in a 10-coordinate geometry to one La(1), three equivalent La(2), one Al(1), two equivalent Al(2), and three equivalent Al(3) atoms. is represented by the CIF file [CIF]
data_La3Al11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.421
_cell_length_b   8.573
_cell_length_c   8.573
_cell_angle_alpha   72.196
_cell_angle_beta   75.046
_cell_angle_gamma   75.046
_symmetry_Int_Tables_number   1
_cell_volume   293.128
_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  0.000  1.000  1.000  1.0
  La  La1  1  0.317  0.683  0.683  1.0
  La  La2  1  0.683  0.317  0.317  1.0
  Al  Al3  1  1.000  0.500  0.500  1.0
  Al  Al4  1  0.500  0.716  0.284  1.0
  Al  Al5  1  0.500  0.284  0.716  1.0
  Al  Al6  1  0.334  0.033  0.298  1.0
  Al  Al7  1  0.666  0.967  0.702  1.0
  Al  Al8  1  0.666  0.702  0.967  1.0
  Al  Al9  1  0.334  0.298  0.033  1.0
  Al  Al10  1  0.137  0.137  0.589  1.0
  Al  Al11  1  0.863  0.863  0.411  1.0
  Al  Al12  1  0.863  0.411  0.863  1.0
  Al  Al13  1  0.137  0.589  0.137  1.0
[/CIF]
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The material described by Al11La3 crystallizes in the orthorhombic Immm space group. There are two inequivalent La sites. In the first La site, La(1) is bonded to four equivalent Al(2), four equivalent Al(4), and eight equivalent Al(3) atoms to form distorted LaAl16 cuboctahedra that share corners with four equivalent Al(1)La4Al8 cuboctahedra, faces with two equivalent La(1)Al16 cuboctahedra, faces with two equivalent Al(1)La4Al8 cuboctahedra, and faces with four equivalent Al(2)La4Al8 cuboctahedra. In the second La site, La(2) is bonded in a 12-coordinate geometry to two equivalent Al(1), two equivalent Al(2), four equivalent Al(3), and six equivalent Al(4) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent La(2), four equivalent Al(2), and four equivalent Al(4) atoms to form distorted AlLa4Al8 cuboctahedra that share corners with four equivalent La(1)Al16 cuboctahedra, faces with two equivalent La(1)Al16 cuboctahedra, faces with two equivalent Al(1)La4Al8 cuboctahedra, and faces with four equivalent Al(2)La4Al8 cuboctahedra. In the second Al site, Al(2) is bonded to two equivalent La(1), two equivalent La(2), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(4) atoms to form distorted AlLa4Al8 cuboctahedra that share corners with four equivalent Al(2)La4Al8 cuboctahedra,  an edgeedge with one Al(2)La4Al8 cuboctahedra, faces with two equivalent La(1)Al16 cuboctahedra, faces with two equivalent Al(1)La4Al8 cuboctahedra, and faces with three equivalent Al(2)La4Al8 cuboctahedra. In the third Al site, Al(3) is bonded in a 9-coordinate geometry to two equivalent La(1), two equivalent La(2), one Al(2), one Al(3), and three equivalent Al(4) atoms. In the fourth Al site, Al(4) is bonded in a 10-coordinate geometry to one La(1), three equivalent La(2), one Al(1), two equivalent Al(2), and three equivalent Al(3) atoms. is represented by the CIF file [CIF]
data_La3Al11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.421
_cell_length_b   8.573
_cell_length_c   8.573
_cell_angle_alpha   72.196
_cell_angle_beta   75.046
_cell_angle_gamma   75.046
_symmetry_Int_Tables_number   1
_cell_volume   293.128
_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  0.000  1.000  1.000  1.0
  La  La1  1  0.317  0.683  0.683  1.0
  La  La2  1  0.683  0.317  0.317  1.0
  Al  Al3  1  1.000  0.500  0.500  1.0
  Al  Al4  1  0.500  0.716  0.284  1.0
  Al  Al5  1  0.500  0.284  0.716  1.0
  Al  Al6  1  0.334  0.033  0.298  1.0
  Al  Al7  1  0.666  0.967  0.702  1.0
  Al  Al8  1  0.666  0.702  0.967  1.0
  Al  Al9  1  0.334  0.298  0.033  1.0
  Al  Al10  1  0.137  0.137  0.589  1.0
  Al  Al11  1  0.863  0.863  0.411  1.0
  Al  Al12  1  0.863  0.411  0.863  1.0
  Al  Al13  1  0.137  0.589  0.137  1.0
[/CIF]
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