The compound described by La6CuZn is Uranium Silicide-derived structured and crystallizes in the tetragonal P4/mmm space group. There are three inequivalent La sites. In the first La site, La(1) is bonded to eight equivalent La(3) and four equivalent Cu(1) atoms to form distorted LaLa8Cu4 cuboctahedra that share corners with four equivalent La(1)La8Cu4 cuboctahedra, corners with eight equivalent La(2)La8Zn4 cuboctahedra, edges with eight equivalent Zn(1)La12 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent La(2)La8Zn4 cuboctahedra, faces with four equivalent La(1)La8Cu4 cuboctahedra, faces with four equivalent Cu(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. In the second La site, La(2) is bonded to eight equivalent La(3) and four equivalent Zn(1) atoms to form distorted LaLa8Zn4 cuboctahedra that share corners with four equivalent La(2)La8Zn4 cuboctahedra, corners with eight equivalent La(1)La8Cu4 cuboctahedra, edges with eight equivalent Cu(1)La12 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent La(1)La8Cu4 cuboctahedra, faces with four equivalent La(2)La8Zn4 cuboctahedra, faces with four equivalent Zn(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. In the third La site, La(3) is bonded to two equivalent La(1), two equivalent La(2), four equivalent La(3), two equivalent Cu(1), and two equivalent Zn(1) atoms to form distorted LaLa8Zn2Cu2 cuboctahedra that share corners with twelve equivalent La(3)La8Zn2Cu2 cuboctahedra, edges with four equivalent La(1)La8Cu4 cuboctahedra, edges with four equivalent La(2)La8Zn4 cuboctahedra, edges with four equivalent Cu(1)La12 cuboctahedra, edges with four equivalent Zn(1)La12 cuboctahedra, edges with eight equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent La(1)La8Cu4 cuboctahedra, faces with two equivalent La(2)La8Zn4 cuboctahedra, faces with two equivalent Cu(1)La12 cuboctahedra, faces with two equivalent Zn(1)La12 cuboctahedra, and faces with ten equivalent La(3)La8Zn2Cu2 cuboctahedra. Cu(1) is bonded to four equivalent La(1) and eight equivalent La(3) atoms to form CuLa12 cuboctahedra that share corners with four equivalent Cu(1)La12 cuboctahedra, corners with eight equivalent Zn(1)La12 cuboctahedra, edges with eight equivalent La(2)La8Zn4 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent Zn(1)La12 cuboctahedra, faces with four equivalent La(1)La8Cu4 cuboctahedra, faces with four equivalent Cu(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. Zn(1) is bonded to four equivalent La(2) and eight equivalent La(3) atoms to form ZnLa12 cuboctahedra that share corners with four equivalent Zn(1)La12 cuboctahedra, corners with eight equivalent Cu(1)La12 cuboctahedra, edges with eight equivalent La(1)La8Cu4 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent Cu(1)La12 cuboctahedra, faces with four equivalent La(2)La8Zn4 cuboctahedra, faces with four equivalent Zn(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. is represented by the CIF file [CIF]
data_La6ZnCu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.947
_cell_length_b   4.947
_cell_length_c   9.890
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   242.023
_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  0.000  1.0
  La  La1  1  0.500  0.500  0.500  1.0
  La  La2  1  0.500  0.000  0.248  1.0
  La  La3  1  0.500  0.000  0.752  1.0
  La  La4  1  0.000  0.500  0.248  1.0
  La  La5  1  0.000  0.500  0.752  1.0
  Zn  Zn6  1  0.000  0.000  0.500  1.0
  Cu  Cu7  1  0.000  0.000  0.000  1.0
[/CIF]
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The compound described by La6CuZn is Uranium Silicide-derived structured and crystallizes in the tetragonal P4/mmm space group. There are three inequivalent La sites. In the first La site, La(1) is bonded to eight equivalent La(3) and four equivalent Cu(1) atoms to form distorted LaLa8Cu4 cuboctahedra that share corners with four equivalent La(1)La8Cu4 cuboctahedra, corners with eight equivalent La(2)La8Zn4 cuboctahedra, edges with eight equivalent Zn(1)La12 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent La(2)La8Zn4 cuboctahedra, faces with four equivalent La(1)La8Cu4 cuboctahedra, faces with four equivalent Cu(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. In the second La site, La(2) is bonded to eight equivalent La(3) and four equivalent Zn(1) atoms to form distorted LaLa8Zn4 cuboctahedra that share corners with four equivalent La(2)La8Zn4 cuboctahedra, corners with eight equivalent La(1)La8Cu4 cuboctahedra, edges with eight equivalent Cu(1)La12 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent La(1)La8Cu4 cuboctahedra, faces with four equivalent La(2)La8Zn4 cuboctahedra, faces with four equivalent Zn(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. In the third La site, La(3) is bonded to two equivalent La(1), two equivalent La(2), four equivalent La(3), two equivalent Cu(1), and two equivalent Zn(1) atoms to form distorted LaLa8Zn2Cu2 cuboctahedra that share corners with twelve equivalent La(3)La8Zn2Cu2 cuboctahedra, edges with four equivalent La(1)La8Cu4 cuboctahedra, edges with four equivalent La(2)La8Zn4 cuboctahedra, edges with four equivalent Cu(1)La12 cuboctahedra, edges with four equivalent Zn(1)La12 cuboctahedra, edges with eight equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent La(1)La8Cu4 cuboctahedra, faces with two equivalent La(2)La8Zn4 cuboctahedra, faces with two equivalent Cu(1)La12 cuboctahedra, faces with two equivalent Zn(1)La12 cuboctahedra, and faces with ten equivalent La(3)La8Zn2Cu2 cuboctahedra. Cu(1) is bonded to four equivalent La(1) and eight equivalent La(3) atoms to form CuLa12 cuboctahedra that share corners with four equivalent Cu(1)La12 cuboctahedra, corners with eight equivalent Zn(1)La12 cuboctahedra, edges with eight equivalent La(2)La8Zn4 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent Zn(1)La12 cuboctahedra, faces with four equivalent La(1)La8Cu4 cuboctahedra, faces with four equivalent Cu(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. Zn(1) is bonded to four equivalent La(2) and eight equivalent La(3) atoms to form ZnLa12 cuboctahedra that share corners with four equivalent Zn(1)La12 cuboctahedra, corners with eight equivalent Cu(1)La12 cuboctahedra, edges with eight equivalent La(1)La8Cu4 cuboctahedra, edges with sixteen equivalent La(3)La8Zn2Cu2 cuboctahedra, faces with two equivalent Cu(1)La12 cuboctahedra, faces with four equivalent La(2)La8Zn4 cuboctahedra, faces with four equivalent Zn(1)La12 cuboctahedra, and faces with eight equivalent La(3)La8Zn2Cu2 cuboctahedra. is represented by the CIF file [CIF]
data_La6ZnCu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.947
_cell_length_b   4.947
_cell_length_c   9.890
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   242.023
_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  0.000  1.0
  La  La1  1  0.500  0.500  0.500  1.0
  La  La2  1  0.500  0.000  0.248  1.0
  La  La3  1  0.500  0.000  0.752  1.0
  La  La4  1  0.000  0.500  0.248  1.0
  La  La5  1  0.000  0.500  0.752  1.0
  Zn  Zn6  1  0.000  0.000  0.500  1.0
  Cu  Cu7  1  0.000  0.000  0.000  1.0
[/CIF]
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