The structure described by MgLa4 crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded in a body-centered cubic geometry to eight equivalent La(1) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to four equivalent Mg(1) and four equivalent La(2) atoms. In the second La site, La(2) is bonded to four equivalent La(1) and eight equivalent La(2) atoms to form a mixture of edge, corner, and face-sharing LaLa12 cuboctahedra. is represented by the CIF card [CIF]
data_La4Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.812
_cell_length_b   3.812
_cell_length_c   12.218
_cell_angle_alpha   98.967
_cell_angle_beta   98.967
_cell_angle_gamma   90.050
_symmetry_Int_Tables_number   1
_cell_volume   173.192
_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  0.588  0.588  0.177  1.0
  La  La1  1  0.194  0.194  0.388  1.0
  La  La2  1  0.806  0.806  0.612  1.0
  La  La3  1  0.412  0.412  0.823  1.0
  Mg  Mg4  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by MgLa4 crystallizes in the tetragonal I4/mmm space group. Mg(1) is bonded in a body-centered cubic geometry to eight equivalent La(1) atoms. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 4-coordinate geometry to four equivalent Mg(1) and four equivalent La(2) atoms. In the second La site, La(2) is bonded to four equivalent La(1) and eight equivalent La(2) atoms to form a mixture of edge, corner, and face-sharing LaLa12 cuboctahedra. is represented by the CIF card [CIF]
data_La4Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.812
_cell_length_b   3.812
_cell_length_c   12.218
_cell_angle_alpha   98.967
_cell_angle_beta   98.967
_cell_angle_gamma   90.050
_symmetry_Int_Tables_number   1
_cell_volume   173.192
_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  0.588  0.588  0.177  1.0
  La  La1  1  0.194  0.194  0.388  1.0
  La  La2  1  0.806  0.806  0.612  1.0
  La  La3  1  0.412  0.412  0.823  1.0
  Mg  Mg4  1  0.000  0.000  0.000  1.0
[/CIF]
.