The crystal structure described by Mg2Cd crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Mg(1), five equivalent Mg(2), and three equivalent Cd(1) atoms to form distorted MgMg9Cd3 cuboctahedra that share corners with six equivalent Mg(2)Mg8Cd4 cuboctahedra, corners with six equivalent Mg(1)Mg9Cd3 cuboctahedra, corners with six equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with five equivalent Mg(2)Mg8Cd4 cuboctahedra, edges with six equivalent Mg(1)Mg9Cd3 cuboctahedra, edges with seven equivalent Cd(1)Mg7Cd5 cuboctahedra, faces with five equivalent Mg(1)Mg9Cd3 cuboctahedra, faces with seven equivalent Cd(1)Mg7Cd5 cuboctahedra, and faces with eight equivalent Mg(2)Mg8Cd4 cuboctahedra. In the second Mg site, Mg(2) is bonded to three equivalent Mg(2), five equivalent Mg(1), and four equivalent Cd(1) atoms to form distorted MgMg8Cd4 cuboctahedra that share corners with six equivalent Mg(2)Mg8Cd4 cuboctahedra, corners with six equivalent Mg(1)Mg9Cd3 cuboctahedra, corners with six equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with four equivalent Mg(2)Mg8Cd4 cuboctahedra, edges with five equivalent Mg(1)Mg9Cd3 cuboctahedra, edges with nine equivalent Cd(1)Mg7Cd5 cuboctahedra, faces with six equivalent Mg(2)Mg8Cd4 cuboctahedra, faces with six equivalent Cd(1)Mg7Cd5 cuboctahedra, and faces with eight equivalent Mg(1)Mg9Cd3 cuboctahedra. Cd(1) is bonded to three equivalent Mg(1), four equivalent Mg(2), and five equivalent Cd(1) atoms to form distorted CdMg7Cd5 cuboctahedra that share corners with six equivalent Mg(2)Mg8Cd4 cuboctahedra, corners with six equivalent Mg(1)Mg9Cd3 cuboctahedra, corners with six equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with two equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with seven equivalent Mg(1)Mg9Cd3 cuboctahedra, edges with nine equivalent Mg(2)Mg8Cd4 cuboctahedra, faces with six equivalent Mg(2)Mg8Cd4 cuboctahedra, faces with seven equivalent Mg(1)Mg9Cd3 cuboctahedra, and faces with seven equivalent Cd(1)Mg7Cd5 cuboctahedra. is represented by the CIF file [CIF]
data_Mg2Cd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.127
_cell_length_b   6.127
_cell_length_c   7.305
_cell_angle_alpha   74.540
_cell_angle_beta   74.540
_cell_angle_gamma   29.445
_symmetry_Int_Tables_number   1
_cell_volume   129.600
_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
  Mg  Mg0  1  0.304  0.304  0.144  1.0
  Mg  Mg1  1  0.027  0.027  0.201  1.0
  Mg  Mg2  1  0.973  0.973  0.799  1.0
  Mg  Mg3  1  0.696  0.696  0.856  1.0
  Cd  Cd4  1  0.638  0.638  0.473  1.0
  Cd  Cd5  1  0.362  0.362  0.527  1.0
[/CIF]
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The crystal structure described by Mg2Cd crystallizes in the monoclinic C2/m space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Mg(1), five equivalent Mg(2), and three equivalent Cd(1) atoms to form distorted MgMg9Cd3 cuboctahedra that share corners with six equivalent Mg(2)Mg8Cd4 cuboctahedra, corners with six equivalent Mg(1)Mg9Cd3 cuboctahedra, corners with six equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with five equivalent Mg(2)Mg8Cd4 cuboctahedra, edges with six equivalent Mg(1)Mg9Cd3 cuboctahedra, edges with seven equivalent Cd(1)Mg7Cd5 cuboctahedra, faces with five equivalent Mg(1)Mg9Cd3 cuboctahedra, faces with seven equivalent Cd(1)Mg7Cd5 cuboctahedra, and faces with eight equivalent Mg(2)Mg8Cd4 cuboctahedra. In the second Mg site, Mg(2) is bonded to three equivalent Mg(2), five equivalent Mg(1), and four equivalent Cd(1) atoms to form distorted MgMg8Cd4 cuboctahedra that share corners with six equivalent Mg(2)Mg8Cd4 cuboctahedra, corners with six equivalent Mg(1)Mg9Cd3 cuboctahedra, corners with six equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with four equivalent Mg(2)Mg8Cd4 cuboctahedra, edges with five equivalent Mg(1)Mg9Cd3 cuboctahedra, edges with nine equivalent Cd(1)Mg7Cd5 cuboctahedra, faces with six equivalent Mg(2)Mg8Cd4 cuboctahedra, faces with six equivalent Cd(1)Mg7Cd5 cuboctahedra, and faces with eight equivalent Mg(1)Mg9Cd3 cuboctahedra. Cd(1) is bonded to three equivalent Mg(1), four equivalent Mg(2), and five equivalent Cd(1) atoms to form distorted CdMg7Cd5 cuboctahedra that share corners with six equivalent Mg(2)Mg8Cd4 cuboctahedra, corners with six equivalent Mg(1)Mg9Cd3 cuboctahedra, corners with six equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with two equivalent Cd(1)Mg7Cd5 cuboctahedra, edges with seven equivalent Mg(1)Mg9Cd3 cuboctahedra, edges with nine equivalent Mg(2)Mg8Cd4 cuboctahedra, faces with six equivalent Mg(2)Mg8Cd4 cuboctahedra, faces with seven equivalent Mg(1)Mg9Cd3 cuboctahedra, and faces with seven equivalent Cd(1)Mg7Cd5 cuboctahedra. is represented by the CIF file [CIF]
data_Mg2Cd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.127
_cell_length_b   6.127
_cell_length_c   7.305
_cell_angle_alpha   74.540
_cell_angle_beta   74.540
_cell_angle_gamma   29.445
_symmetry_Int_Tables_number   1
_cell_volume   129.600
_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
  Mg  Mg0  1  0.304  0.304  0.144  1.0
  Mg  Mg1  1  0.027  0.027  0.201  1.0
  Mg  Mg2  1  0.973  0.973  0.799  1.0
  Mg  Mg3  1  0.696  0.696  0.856  1.0
  Cd  Cd4  1  0.638  0.638  0.473  1.0
  Cd  Cd5  1  0.362  0.362  0.527  1.0
[/CIF]
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