The crystal structure described by Mg6CeAl crystallizes in the monoclinic Pm space group. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(6), two equivalent Ce(1), and two equivalent Al(1) atoms. In the second Mg site, Mg(2) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Ce(1), and one Al(1) atom. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Ce(1), and two equivalent Al(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 11-coordinate geometry to one Mg(6), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Ce(1), and two equivalent Al(1) atoms. In the fifth Mg site, Mg(5) is bonded in a 2-coordinate geometry to two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), one Ce(1), and two equivalent Al(1) atoms. In the sixth Mg site, Mg(6) is bonded in a 11-coordinate geometry to one Mg(4), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), and two equivalent Ce(1) atoms. Ce(1) is bonded in a 13-coordinate geometry to one Mg(5), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), and two equivalent Al(1) atoms. Al(1) is bonded in a 11-coordinate geometry to one Mg(2), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(5), and two equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeMg6Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.501
_cell_length_b   6.609
_cell_length_c   4.893
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   126.872
_symmetry_Int_Tables_number   1
_cell_volume   194.013
_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  0.352  0.256  0.750  1.0
  Mg  Mg1  1  0.159  0.837  0.250  1.0
  Mg  Mg2  1  0.676  0.281  0.250  1.0
  Mg  Mg3  1  0.649  0.753  0.250  1.0
  Mg  Mg4  1  0.323  0.722  0.750  1.0
  Mg  Mg5  1  0.842  0.161  0.750  1.0
  Mg  Mg6  1  0.876  0.676  0.750  1.0
  Al  Al7  1  0.122  0.315  0.250  1.0
[/CIF]
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The crystal structure described by Mg6CeAl crystallizes in the monoclinic Pm space group. There are six inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 10-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(6), two equivalent Ce(1), and two equivalent Al(1) atoms. In the second Mg site, Mg(2) is bonded in a 11-coordinate geometry to two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Mg(6), two equivalent Ce(1), and one Al(1) atom. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), two equivalent Mg(6), two equivalent Ce(1), and two equivalent Al(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 11-coordinate geometry to one Mg(6), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), two equivalent Ce(1), and two equivalent Al(1) atoms. In the fifth Mg site, Mg(5) is bonded in a 2-coordinate geometry to two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), one Ce(1), and two equivalent Al(1) atoms. In the sixth Mg site, Mg(6) is bonded in a 11-coordinate geometry to one Mg(4), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), and two equivalent Ce(1) atoms. Ce(1) is bonded in a 13-coordinate geometry to one Mg(5), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(6), and two equivalent Al(1) atoms. Al(1) is bonded in a 11-coordinate geometry to one Mg(2), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(4), two equivalent Mg(5), and two equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeMg6Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.501
_cell_length_b   6.609
_cell_length_c   4.893
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   126.872
_symmetry_Int_Tables_number   1
_cell_volume   194.013
_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  0.352  0.256  0.750  1.0
  Mg  Mg1  1  0.159  0.837  0.250  1.0
  Mg  Mg2  1  0.676  0.281  0.250  1.0
  Mg  Mg3  1  0.649  0.753  0.250  1.0
  Mg  Mg4  1  0.323  0.722  0.750  1.0
  Mg  Mg5  1  0.842  0.161  0.750  1.0
  Mg  Mg6  1  0.876  0.676  0.750  1.0
  Al  Al7  1  0.122  0.315  0.250  1.0
[/CIF]
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