The crystal structure described by La2Mg crystallizes in the monoclinic C2/c space group. Mg(1) is bonded to two equivalent Mg(1) and ten La(1,1) atoms to form distorted MgLa10Mg2 cuboctahedra that share corners with six equivalent Mg(1)La10Mg2 cuboctahedra; corners with twelve equivalent La(1)La7Mg5 cuboctahedra; edges with eight La(1,1)La7Mg5 cuboctahedra; edges with ten equivalent Mg(1)La10Mg2 cuboctahedra; faces with four equivalent Mg(1)La10Mg2 cuboctahedra; and faces with sixteen La(1,1)La7Mg5 cuboctahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to five equivalent Mg(1) and seven La(1,1) atoms to form distorted LaLa7Mg5 cuboctahedra that share corners with six equivalent Mg(1)La10Mg2 cuboctahedra; corners with twelve La(1,1)La7Mg5 cuboctahedra; edges with four equivalent Mg(1)La10Mg2 cuboctahedra; edges with fourteen La(1,1)La7Mg5 cuboctahedra; faces with eight equivalent Mg(1)La10Mg2 cuboctahedra; and faces with twelve La(1,1)La7Mg5 cuboctahedra. In the second La site, La(1) is bonded to five equivalent Mg(1) and seven La(1,1) atoms to form distorted LaLa7Mg5 cuboctahedra that share corners with six equivalent Mg(1)La10Mg2 cuboctahedra; corners with twelve La(1,1)La7Mg5 cuboctahedra; edges with four equivalent Mg(1)La10Mg2 cuboctahedra; edges with fourteen La(1,1)La7Mg5 cuboctahedra; faces with eight equivalent Mg(1)La10Mg2 cuboctahedra; and faces with twelve La(1,1)La7Mg5 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.245
_cell_length_b   6.245
_cell_length_c   6.726
_cell_angle_alpha   62.831
_cell_angle_beta   62.831
_cell_angle_gamma   60.713
_symmetry_Int_Tables_number   1
_cell_volume   194.111
_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  0.242  0.418  0.746  1.0
  La  La1  1  0.582  0.758  0.754  1.0
  La  La2  1  0.418  0.242  0.246  1.0
  La  La3  1  0.758  0.582  0.254  1.0
  Mg  Mg4  1  0.078  0.922  0.250  1.0
  Mg  Mg5  1  0.922  0.078  0.750  1.0
[/CIF]
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The crystal structure described by La2Mg crystallizes in the monoclinic C2/c space group. Mg(1) is bonded to two equivalent Mg(1) and ten La(1,1) atoms to form distorted MgLa10Mg2 cuboctahedra that share corners with six equivalent Mg(1)La10Mg2 cuboctahedra; corners with twelve equivalent La(1)La7Mg5 cuboctahedra; edges with eight La(1,1)La7Mg5 cuboctahedra; edges with ten equivalent Mg(1)La10Mg2 cuboctahedra; faces with four equivalent Mg(1)La10Mg2 cuboctahedra; and faces with sixteen La(1,1)La7Mg5 cuboctahedra. There are two inequivalent La sites. In the first La site, La(1) is bonded to five equivalent Mg(1) and seven La(1,1) atoms to form distorted LaLa7Mg5 cuboctahedra that share corners with six equivalent Mg(1)La10Mg2 cuboctahedra; corners with twelve La(1,1)La7Mg5 cuboctahedra; edges with four equivalent Mg(1)La10Mg2 cuboctahedra; edges with fourteen La(1,1)La7Mg5 cuboctahedra; faces with eight equivalent Mg(1)La10Mg2 cuboctahedra; and faces with twelve La(1,1)La7Mg5 cuboctahedra. In the second La site, La(1) is bonded to five equivalent Mg(1) and seven La(1,1) atoms to form distorted LaLa7Mg5 cuboctahedra that share corners with six equivalent Mg(1)La10Mg2 cuboctahedra; corners with twelve La(1,1)La7Mg5 cuboctahedra; edges with four equivalent Mg(1)La10Mg2 cuboctahedra; edges with fourteen La(1,1)La7Mg5 cuboctahedra; faces with eight equivalent Mg(1)La10Mg2 cuboctahedra; and faces with twelve La(1,1)La7Mg5 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.245
_cell_length_b   6.245
_cell_length_c   6.726
_cell_angle_alpha   62.831
_cell_angle_beta   62.831
_cell_angle_gamma   60.713
_symmetry_Int_Tables_number   1
_cell_volume   194.111
_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  0.242  0.418  0.746  1.0
  La  La1  1  0.582  0.758  0.754  1.0
  La  La2  1  0.418  0.242  0.246  1.0
  La  La3  1  0.758  0.582  0.254  1.0
  Mg  Mg4  1  0.078  0.922  0.250  1.0
  Mg  Mg5  1  0.922  0.078  0.750  1.0
[/CIF]
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