The crystal structure described by LaCu13 crystallizes in the cubic Fm-3c space group. La(1) is bonded in a 24-coordinate geometry to twenty-four equivalent Cu(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to twelve equivalent Cu(2) atoms to form a mixture of corner and face-sharing CuCu12 cuboctahedra. In the second Cu site, Cu(2) is bonded to two equivalent La(1), one Cu(1), and nine equivalent Cu(2) atoms to form distorted CuLa2Cu10 cuboctahedra that share  a cornercorner with one Cu(1)Cu12 cuboctahedra, corners with twenty-seven equivalent Cu(2)La2Cu10 cuboctahedra, edges with eight equivalent Cu(2)La2Cu10 cuboctahedra, faces with two equivalent Cu(1)Cu12 cuboctahedra, and faces with twenty-three equivalent Cu(2)La2Cu10 cuboctahedra. is represented by the CIF file [CIF]
data_LaCu13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.110
_cell_length_b   8.110
_cell_length_c   8.110
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   377.154
_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  0.750  0.750  0.750  1.0
  La  La1  1  0.250  0.250  0.250  1.0
  Cu  Cu2  1  0.500  0.500  0.500  1.0
  Cu  Cu3  1  0.000  0.000  0.000  1.0
  Cu  Cu4  1  0.796  0.437  0.204  1.0
  Cu  Cu5  1  0.204  0.563  0.796  1.0
  Cu  Cu6  1  0.563  0.204  0.437  1.0
  Cu  Cu7  1  0.437  0.796  0.563  1.0
  Cu  Cu8  1  0.296  0.063  0.704  1.0
  Cu  Cu9  1  0.704  0.937  0.296  1.0
  Cu  Cu10  1  0.937  0.704  0.063  1.0
  Cu  Cu11  1  0.063  0.296  0.937  1.0
  Cu  Cu12  1  0.437  0.204  0.796  1.0
  Cu  Cu13  1  0.563  0.796  0.204  1.0
  Cu  Cu14  1  0.204  0.437  0.563  1.0
  Cu  Cu15  1  0.796  0.563  0.437  1.0
  Cu  Cu16  1  0.063  0.704  0.296  1.0
  Cu  Cu17  1  0.937  0.296  0.704  1.0
  Cu  Cu18  1  0.704  0.063  0.937  1.0
  Cu  Cu19  1  0.296  0.937  0.063  1.0
  Cu  Cu20  1  0.204  0.796  0.437  1.0
  Cu  Cu21  1  0.796  0.204  0.563  1.0
  Cu  Cu22  1  0.437  0.563  0.204  1.0
  Cu  Cu23  1  0.563  0.437  0.796  1.0
  Cu  Cu24  1  0.704  0.296  0.063  1.0
  Cu  Cu25  1  0.296  0.704  0.937  1.0
  Cu  Cu26  1  0.063  0.937  0.704  1.0
  Cu  Cu27  1  0.937  0.063  0.296  1.0
[/CIF]
.
The crystal structure described by LaCu13 crystallizes in the cubic Fm-3c space group. La(1) is bonded in a 24-coordinate geometry to twenty-four equivalent Cu(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to twelve equivalent Cu(2) atoms to form a mixture of corner and face-sharing CuCu12 cuboctahedra. In the second Cu site, Cu(2) is bonded to two equivalent La(1), one Cu(1), and nine equivalent Cu(2) atoms to form distorted CuLa2Cu10 cuboctahedra that share  a cornercorner with one Cu(1)Cu12 cuboctahedra, corners with twenty-seven equivalent Cu(2)La2Cu10 cuboctahedra, edges with eight equivalent Cu(2)La2Cu10 cuboctahedra, faces with two equivalent Cu(1)Cu12 cuboctahedra, and faces with twenty-three equivalent Cu(2)La2Cu10 cuboctahedra. is represented by the CIF file [CIF]
data_LaCu13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.110
_cell_length_b   8.110
_cell_length_c   8.110
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   377.154
_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  0.750  0.750  0.750  1.0
  La  La1  1  0.250  0.250  0.250  1.0
  Cu  Cu2  1  0.500  0.500  0.500  1.0
  Cu  Cu3  1  0.000  0.000  0.000  1.0
  Cu  Cu4  1  0.796  0.437  0.204  1.0
  Cu  Cu5  1  0.204  0.563  0.796  1.0
  Cu  Cu6  1  0.563  0.204  0.437  1.0
  Cu  Cu7  1  0.437  0.796  0.563  1.0
  Cu  Cu8  1  0.296  0.063  0.704  1.0
  Cu  Cu9  1  0.704  0.937  0.296  1.0
  Cu  Cu10  1  0.937  0.704  0.063  1.0
  Cu  Cu11  1  0.063  0.296  0.937  1.0
  Cu  Cu12  1  0.437  0.204  0.796  1.0
  Cu  Cu13  1  0.563  0.796  0.204  1.0
  Cu  Cu14  1  0.204  0.437  0.563  1.0
  Cu  Cu15  1  0.796  0.563  0.437  1.0
  Cu  Cu16  1  0.063  0.704  0.296  1.0
  Cu  Cu17  1  0.937  0.296  0.704  1.0
  Cu  Cu18  1  0.704  0.063  0.937  1.0
  Cu  Cu19  1  0.296  0.937  0.063  1.0
  Cu  Cu20  1  0.204  0.796  0.437  1.0
  Cu  Cu21  1  0.796  0.204  0.563  1.0
  Cu  Cu22  1  0.437  0.563  0.204  1.0
  Cu  Cu23  1  0.563  0.437  0.796  1.0
  Cu  Cu24  1  0.704  0.296  0.063  1.0
  Cu  Cu25  1  0.296  0.704  0.937  1.0
  Cu  Cu26  1  0.063  0.937  0.704  1.0
  Cu  Cu27  1  0.937  0.063  0.296  1.0
[/CIF]
.