The material described by Mg2La crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to four equivalent Mg(1), five equivalent Mg(2), and three equivalent La(1) atoms. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to three equivalent Mg(2), five equivalent Mg(1), and four equivalent La(1) atoms. La(1) is bonded to three equivalent Mg(1), four equivalent Mg(2), and five equivalent La(1) atoms to form a mixture of corner, edge, and face-sharing LaLa5Mg7 cuboctahedra. is represented by the CIF file [CIF]
data_LaMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.444
_cell_length_b   6.444
_cell_length_c   8.077
_cell_angle_alpha   76.125
_cell_angle_beta   76.125
_cell_angle_gamma   30.914
_symmetry_Int_Tables_number   1
_cell_volume   166.860
_cell_formula_units_Z   2
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  0.643  0.643  0.455  1.0
  La  La1  1  0.357  0.357  0.545  1.0
  Mg  Mg2  1  0.315  0.315  0.114  1.0
  Mg  Mg3  1  0.022  0.022  0.180  1.0
  Mg  Mg4  1  0.978  0.978  0.820  1.0
  Mg  Mg5  1  0.685  0.685  0.886  1.0
[/CIF]
.
The material described by Mg2La crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 12-coordinate geometry to four equivalent Mg(1), five equivalent Mg(2), and three equivalent La(1) atoms. In the second Mg site, Mg(2) is bonded in a 12-coordinate geometry to three equivalent Mg(2), five equivalent Mg(1), and four equivalent La(1) atoms. La(1) is bonded to three equivalent Mg(1), four equivalent Mg(2), and five equivalent La(1) atoms to form a mixture of corner, edge, and face-sharing LaLa5Mg7 cuboctahedra. is represented by the CIF file [CIF]
data_LaMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.444
_cell_length_b   6.444
_cell_length_c   8.077
_cell_angle_alpha   76.125
_cell_angle_beta   76.125
_cell_angle_gamma   30.914
_symmetry_Int_Tables_number   1
_cell_volume   166.860
_cell_formula_units_Z   2
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  0.643  0.643  0.455  1.0
  La  La1  1  0.357  0.357  0.545  1.0
  Mg  Mg2  1  0.315  0.315  0.114  1.0
  Mg  Mg3  1  0.022  0.022  0.180  1.0
  Mg  Mg4  1  0.978  0.978  0.820  1.0
  Mg  Mg5  1  0.685  0.685  0.886  1.0
[/CIF]
.