The structure described by Mg5La is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the monoclinic Cm space group. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to one Mg(3), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), and two equivalent La(1) atoms. In the second Mg site, Mg(2) is bonded to one Mg(5), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and three equivalent La(1) atoms to form MgLa3Mg9 cuboctahedra that share corners with six equivalent Mg(2)La3Mg9 cuboctahedra, edges with two equivalent La(1)La2Mg10 cuboctahedra, faces with two equivalent Mg(2)La3Mg9 cuboctahedra, and faces with five equivalent La(1)La2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to one Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), three equivalent Mg(4), and two equivalent La(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), three equivalent Mg(3), and one La(1) atom. In the fifth Mg site, Mg(5) 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 La(1) atoms. La(1) is bonded to one Mg(4), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), three equivalent Mg(2), and two equivalent La(1) atoms to form LaLa2Mg10 cuboctahedra that share corners with six equivalent La(1)La2Mg10 cuboctahedra, edges with two equivalent Mg(2)La3Mg9 cuboctahedra, faces with two equivalent La(1)La2Mg10 cuboctahedra, and faces with five equivalent Mg(2)La3Mg9 cuboctahedra. is represented by the CIF card [CIF]
data_LaMg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.712
_cell_length_b   6.712
_cell_length_c   7.663
_cell_angle_alpha   75.695
_cell_angle_beta   75.695
_cell_angle_gamma   27.818
_symmetry_Int_Tables_number   1
_cell_volume   155.797
_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  0.613  0.613  0.271  1.0
  Mg  Mg1  1  0.990  0.990  0.992  1.0
  Mg  Mg2  1  0.338  0.338  0.339  1.0
  Mg  Mg3  1  0.937  0.937  0.621  1.0
  Mg  Mg4  1  0.667  0.667  0.678  1.0
  Mg  Mg5  1  0.288  0.288  0.933  1.0
[/CIF]
.
The structure described by Mg5La is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the monoclinic Cm space group. There are five inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to one Mg(3), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), and two equivalent La(1) atoms. In the second Mg site, Mg(2) is bonded to one Mg(5), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and three equivalent La(1) atoms to form MgLa3Mg9 cuboctahedra that share corners with six equivalent Mg(2)La3Mg9 cuboctahedra, edges with two equivalent La(1)La2Mg10 cuboctahedra, faces with two equivalent Mg(2)La3Mg9 cuboctahedra, and faces with five equivalent La(1)La2Mg10 cuboctahedra. In the third Mg site, Mg(3) is bonded in a 12-coordinate geometry to one Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(5), three equivalent Mg(4), and two equivalent La(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 12-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(4), two equivalent Mg(5), three equivalent Mg(3), and one La(1) atom. In the fifth Mg site, Mg(5) 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 La(1) atoms. La(1) is bonded to one Mg(4), two equivalent Mg(1), two equivalent Mg(3), two equivalent Mg(5), three equivalent Mg(2), and two equivalent La(1) atoms to form LaLa2Mg10 cuboctahedra that share corners with six equivalent La(1)La2Mg10 cuboctahedra, edges with two equivalent Mg(2)La3Mg9 cuboctahedra, faces with two equivalent La(1)La2Mg10 cuboctahedra, and faces with five equivalent Mg(2)La3Mg9 cuboctahedra. is represented by the CIF card [CIF]
data_LaMg5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.712
_cell_length_b   6.712
_cell_length_c   7.663
_cell_angle_alpha   75.695
_cell_angle_beta   75.695
_cell_angle_gamma   27.818
_symmetry_Int_Tables_number   1
_cell_volume   155.797
_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  0.613  0.613  0.271  1.0
  Mg  Mg1  1  0.990  0.990  0.992  1.0
  Mg  Mg2  1  0.338  0.338  0.339  1.0
  Mg  Mg3  1  0.937  0.937  0.621  1.0
  Mg  Mg4  1  0.667  0.667  0.678  1.0
  Mg  Mg5  1  0.288  0.288  0.933  1.0
[/CIF]
.