The crystal structure described by Lu(CuAl)6 crystallizes in the orthorhombic Immm space group. Lu(1) is bonded in a 20-coordinate geometry to four equivalent Cu(2), eight equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent Lu(1), two equivalent Cu(1), two equivalent Cu(2), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. In the second Cu site, Cu(2) is bonded to two equivalent Lu(1), four equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms to form a mixture of distorted edge, face, and corner-sharing CuLu2Al6Cu4 cuboctahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Lu(1), two equivalent Cu(2), four equivalent Cu(1), one Al(1), and two equivalent Al(3) atoms. In the second Al site, Al(2) is bonded in a 8-coordinate geometry to one Lu(1), two equivalent Cu(2), four equivalent Cu(1), one Al(2), and two equivalent Al(3) atoms. In the third Al site, Al(3) is bonded in a 12-coordinate geometry to two equivalent Lu(1), two equivalent Cu(2), four equivalent Cu(1), two equivalent Al(1), and two equivalent Al(2) atoms. is represented by the CIF file [CIF]
data_Lu(AlCu)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.546
_cell_length_b   6.546
_cell_length_c   6.546
_cell_angle_alpha   135.293
_cell_angle_beta   99.089
_cell_angle_gamma   97.546
_symmetry_Int_Tables_number   1
_cell_volume   182.438
_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
  Lu  Lu0  1  0.000  0.000  0.000  1.0
  Al  Al1  1  0.652  0.652  0.000  1.0
  Al  Al2  1  0.348  0.348  0.000  1.0
  Al  Al3  1  0.346  0.000  0.346  1.0
  Al  Al4  1  0.654  0.000  0.654  1.0
  Al  Al5  1  0.199  0.699  0.500  1.0
  Al  Al6  1  0.801  0.301  0.500  1.0
  Cu  Cu7  1  0.500  0.500  0.500  1.0
  Cu  Cu8  1  0.500  0.000  0.000  1.0
  Cu  Cu9  1  0.000  0.500  0.000  1.0
  Cu  Cu10  1  0.000  0.000  0.500  1.0
  Cu  Cu11  1  0.771  0.500  0.271  1.0
  Cu  Cu12  1  0.229  0.500  0.729  1.0
[/CIF]
.
The crystal structure described by Lu(CuAl)6 crystallizes in the orthorhombic Immm space group. Lu(1) is bonded in a 20-coordinate geometry to four equivalent Cu(2), eight equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and four equivalent Al(3) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 12-coordinate geometry to two equivalent Lu(1), two equivalent Cu(1), two equivalent Cu(2), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. In the second Cu site, Cu(2) is bonded to two equivalent Lu(1), four equivalent Cu(1), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms to form a mixture of distorted edge, face, and corner-sharing CuLu2Al6Cu4 cuboctahedra. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Lu(1), two equivalent Cu(2), four equivalent Cu(1), one Al(1), and two equivalent Al(3) atoms. In the second Al site, Al(2) is bonded in a 8-coordinate geometry to one Lu(1), two equivalent Cu(2), four equivalent Cu(1), one Al(2), and two equivalent Al(3) atoms. In the third Al site, Al(3) is bonded in a 12-coordinate geometry to two equivalent Lu(1), two equivalent Cu(2), four equivalent Cu(1), two equivalent Al(1), and two equivalent Al(2) atoms. is represented by the CIF file [CIF]
data_Lu(AlCu)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.546
_cell_length_b   6.546
_cell_length_c   6.546
_cell_angle_alpha   135.293
_cell_angle_beta   99.089
_cell_angle_gamma   97.546
_symmetry_Int_Tables_number   1
_cell_volume   182.438
_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
  Lu  Lu0  1  0.000  0.000  0.000  1.0
  Al  Al1  1  0.652  0.652  0.000  1.0
  Al  Al2  1  0.348  0.348  0.000  1.0
  Al  Al3  1  0.346  0.000  0.346  1.0
  Al  Al4  1  0.654  0.000  0.654  1.0
  Al  Al5  1  0.199  0.699  0.500  1.0
  Al  Al6  1  0.801  0.301  0.500  1.0
  Cu  Cu7  1  0.500  0.500  0.500  1.0
  Cu  Cu8  1  0.500  0.000  0.000  1.0
  Cu  Cu9  1  0.000  0.500  0.000  1.0
  Cu  Cu10  1  0.000  0.000  0.500  1.0
  Cu  Cu11  1  0.771  0.500  0.271  1.0
  Cu  Cu12  1  0.229  0.500  0.729  1.0
[/CIF]
.