The material structure described by Mg6CeAl crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Ce(1), and one Al(1) atom. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Ce(1), and two equivalent Al(1) atoms. In the third Mg site, Mg(3) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Al(1) atoms to form distorted MgMg10Al2 cuboctahedra that share corners with six equivalent Mg(3)Mg10Al2 cuboctahedra, faces with two equivalent Mg(3)Mg10Al2 cuboctahedra, and faces with six equivalent Ce(1)Mg10Al2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ce(1) atoms. Ce(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Al(1) atoms to form CeMg10Al2 cuboctahedra that share corners with six equivalent Ce(1)Mg10Al2 cuboctahedra, faces with two equivalent Ce(1)Mg10Al2 cuboctahedra, and faces with six equivalent Mg(3)Mg10Al2 cuboctahedra. Al(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), four equivalent Mg(2), and two equivalent Ce(1) atoms. is represented by the CIF card [CIF]
data_CeMg6Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.805
_cell_length_b   6.805
_cell_length_c   5.245
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   121.919
_symmetry_Int_Tables_number   1
_cell_volume   206.157
_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
  Ce  Ce0  1  0.331  0.669  0.500  1.0
  Mg  Mg1  1  0.328  0.165  0.500  1.0
  Mg  Mg2  1  0.835  0.672  0.500  1.0
  Mg  Mg3  1  0.158  0.322  0.000  1.0
  Mg  Mg4  1  0.678  0.842  0.000  1.0
  Mg  Mg5  1  0.670  0.330  0.000  1.0
  Mg  Mg6  1  0.163  0.837  0.000  1.0
  Al  Al7  1  0.837  0.163  0.500  1.0
[/CIF]
.
The material structure described by Mg6CeAl crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Ce(1), and one Al(1) atom. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Ce(1), and two equivalent Al(1) atoms. In the third Mg site, Mg(3) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Al(1) atoms to form distorted MgMg10Al2 cuboctahedra that share corners with six equivalent Mg(3)Mg10Al2 cuboctahedra, faces with two equivalent Mg(3)Mg10Al2 cuboctahedra, and faces with six equivalent Ce(1)Mg10Al2 cuboctahedra. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(3), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Ce(1) atoms. Ce(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Al(1) atoms to form CeMg10Al2 cuboctahedra that share corners with six equivalent Ce(1)Mg10Al2 cuboctahedra, faces with two equivalent Ce(1)Mg10Al2 cuboctahedra, and faces with six equivalent Mg(3)Mg10Al2 cuboctahedra. Al(1) is bonded in a 10-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), four equivalent Mg(2), and two equivalent Ce(1) atoms. is represented by the CIF card [CIF]
data_CeMg6Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.805
_cell_length_b   6.805
_cell_length_c   5.245
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   121.919
_symmetry_Int_Tables_number   1
_cell_volume   206.157
_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
  Ce  Ce0  1  0.331  0.669  0.500  1.0
  Mg  Mg1  1  0.328  0.165  0.500  1.0
  Mg  Mg2  1  0.835  0.672  0.500  1.0
  Mg  Mg3  1  0.158  0.322  0.000  1.0
  Mg  Mg4  1  0.678  0.842  0.000  1.0
  Mg  Mg5  1  0.670  0.330  0.000  1.0
  Mg  Mg6  1  0.163  0.837  0.000  1.0
  Al  Al7  1  0.837  0.163  0.500  1.0
[/CIF]
.