The material structure described by Mg2Y is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to three equivalent Mg(2), four equivalent Mg(1), and five equivalent Y(1) atoms to form a mixture of face, corner, and edge-sharing MgY5Mg7 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 11-coordinate geometry to three equivalent Mg(1), four equivalent Mg(2), and four equivalent Y(1) atoms. Y(1) is bonded in a 12-coordinate geometry to four equivalent Mg(2), five equivalent Mg(1), and three equivalent Y(1) atoms. is represented by the CIF card [CIF]
data_YMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.752
_cell_length_b   6.752
_cell_length_c   7.348
_cell_angle_alpha   75.259
_cell_angle_beta   75.259
_cell_angle_gamma   29.049
_symmetry_Int_Tables_number   1
_cell_volume   156.932
_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
  Y  Y0  1  0.519  0.519  0.226  1.0
  Y  Y1  1  0.481  0.481  0.774  1.0
  Mg  Mg2  1  0.807  0.807  0.129  1.0
  Mg  Mg3  1  0.161  0.161  0.459  1.0
  Mg  Mg4  1  0.839  0.839  0.541  1.0
  Mg  Mg5  1  0.193  0.193  0.871  1.0
[/CIF]
.
The material structure described by Mg2Y is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to three equivalent Mg(2), four equivalent Mg(1), and five equivalent Y(1) atoms to form a mixture of face, corner, and edge-sharing MgY5Mg7 cuboctahedra. In the second Mg site, Mg(2) is bonded in a 11-coordinate geometry to three equivalent Mg(1), four equivalent Mg(2), and four equivalent Y(1) atoms. Y(1) is bonded in a 12-coordinate geometry to four equivalent Mg(2), five equivalent Mg(1), and three equivalent Y(1) atoms. is represented by the CIF card [CIF]
data_YMg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.752
_cell_length_b   6.752
_cell_length_c   7.348
_cell_angle_alpha   75.259
_cell_angle_beta   75.259
_cell_angle_gamma   29.049
_symmetry_Int_Tables_number   1
_cell_volume   156.932
_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
  Y  Y0  1  0.519  0.519  0.226  1.0
  Y  Y1  1  0.481  0.481  0.774  1.0
  Mg  Mg2  1  0.807  0.807  0.129  1.0
  Mg  Mg3  1  0.161  0.161  0.459  1.0
  Mg  Mg4  1  0.839  0.839  0.541  1.0
  Mg  Mg5  1  0.193  0.193  0.871  1.0
[/CIF]
.