The crystal structure described by La6Mg22Al crystallizes in the cubic Fm-3m space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 1-coordinate geometry to three equivalent Mg(2), three equivalent Mg(3), three equivalent La(1), and one Al(1) atom. In the second Mg site, Mg(2) is bonded in a distorted q6 geometry to three equivalent Mg(1), three equivalent Mg(2), three equivalent Mg(3), and three equivalent La(1) atoms. In the third Mg site, Mg(3) is bonded to four equivalent Mg(1), four equivalent Mg(2), and four equivalent La(1) atoms to form a mixture of face and corner-sharing MgLa4Mg8 cuboctahedra. La(1) is bonded in a 12-coordinate geometry to four equivalent Mg(1), four equivalent Mg(2), and four equivalent Mg(3) atoms. Al(1) is bonded in a body-centered cubic geometry to eight equivalent Mg(1) atoms. is represented by the CIF card [CIF]
data_La6Mg22Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.303
_cell_length_b   10.303
_cell_length_c   10.303
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   773.274
_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  0.788  0.212  0.212  1.0
  La  La1  1  0.788  0.212  0.788  1.0
  La  La2  1  0.212  0.212  0.788  1.0
  La  La3  1  0.212  0.788  0.788  1.0
  La  La4  1  0.788  0.788  0.212  1.0
  La  La5  1  0.212  0.788  0.212  1.0
  Mg  Mg6  1  0.864  0.379  0.379  1.0
  Mg  Mg7  1  0.829  0.829  0.829  1.0
  Mg  Mg8  1  0.379  0.379  0.379  1.0
  Mg  Mg9  1  0.000  0.000  0.500  1.0
  Mg  Mg10  1  0.500  0.500  0.000  1.0
  Mg  Mg11  1  0.486  0.171  0.171  1.0
  Mg  Mg12  1  0.379  0.379  0.864  1.0
  Mg  Mg13  1  0.829  0.514  0.829  1.0
  Mg  Mg14  1  0.829  0.829  0.514  1.0
  Mg  Mg15  1  0.621  0.621  0.136  1.0
  Mg  Mg16  1  0.136  0.621  0.621  1.0
  Mg  Mg17  1  0.171  0.171  0.486  1.0
  Mg  Mg18  1  0.379  0.864  0.379  1.0
  Mg  Mg19  1  0.621  0.621  0.621  1.0
  Mg  Mg20  1  0.000  0.500  0.000  1.0
  Mg  Mg21  1  0.000  0.500  0.500  1.0
  Mg  Mg22  1  0.171  0.486  0.171  1.0
  Mg  Mg23  1  0.621  0.136  0.621  1.0
  Mg  Mg24  1  0.514  0.829  0.829  1.0
  Mg  Mg25  1  0.500  0.000  0.000  1.0
  Mg  Mg26  1  0.500  0.000  0.500  1.0
  Mg  Mg27  1  0.171  0.171  0.171  1.0
  Al  Al28  1  0.500  0.500  0.500  1.0
[/CIF]
.
The crystal structure described by La6Mg22Al crystallizes in the cubic Fm-3m space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 1-coordinate geometry to three equivalent Mg(2), three equivalent Mg(3), three equivalent La(1), and one Al(1) atom. In the second Mg site, Mg(2) is bonded in a distorted q6 geometry to three equivalent Mg(1), three equivalent Mg(2), three equivalent Mg(3), and three equivalent La(1) atoms. In the third Mg site, Mg(3) is bonded to four equivalent Mg(1), four equivalent Mg(2), and four equivalent La(1) atoms to form a mixture of face and corner-sharing MgLa4Mg8 cuboctahedra. La(1) is bonded in a 12-coordinate geometry to four equivalent Mg(1), four equivalent Mg(2), and four equivalent Mg(3) atoms. Al(1) is bonded in a body-centered cubic geometry to eight equivalent Mg(1) atoms. is represented by the CIF card [CIF]
data_La6Mg22Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.303
_cell_length_b   10.303
_cell_length_c   10.303
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   773.274
_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  0.788  0.212  0.212  1.0
  La  La1  1  0.788  0.212  0.788  1.0
  La  La2  1  0.212  0.212  0.788  1.0
  La  La3  1  0.212  0.788  0.788  1.0
  La  La4  1  0.788  0.788  0.212  1.0
  La  La5  1  0.212  0.788  0.212  1.0
  Mg  Mg6  1  0.864  0.379  0.379  1.0
  Mg  Mg7  1  0.829  0.829  0.829  1.0
  Mg  Mg8  1  0.379  0.379  0.379  1.0
  Mg  Mg9  1  0.000  0.000  0.500  1.0
  Mg  Mg10  1  0.500  0.500  0.000  1.0
  Mg  Mg11  1  0.486  0.171  0.171  1.0
  Mg  Mg12  1  0.379  0.379  0.864  1.0
  Mg  Mg13  1  0.829  0.514  0.829  1.0
  Mg  Mg14  1  0.829  0.829  0.514  1.0
  Mg  Mg15  1  0.621  0.621  0.136  1.0
  Mg  Mg16  1  0.136  0.621  0.621  1.0
  Mg  Mg17  1  0.171  0.171  0.486  1.0
  Mg  Mg18  1  0.379  0.864  0.379  1.0
  Mg  Mg19  1  0.621  0.621  0.621  1.0
  Mg  Mg20  1  0.000  0.500  0.000  1.0
  Mg  Mg21  1  0.000  0.500  0.500  1.0
  Mg  Mg22  1  0.171  0.486  0.171  1.0
  Mg  Mg23  1  0.621  0.136  0.621  1.0
  Mg  Mg24  1  0.514  0.829  0.829  1.0
  Mg  Mg25  1  0.500  0.000  0.000  1.0
  Mg  Mg26  1  0.500  0.000  0.500  1.0
  Mg  Mg27  1  0.171  0.171  0.171  1.0
  Al  Al28  1  0.500  0.500  0.500  1.0
[/CIF]
.