The material structure described by Mg2Cd crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Mg(2) and six equivalent Cd(1) atoms to form distorted MgMg4Cd6 cuboctahedra that share corners with four equivalent Mg(1)Mg4Cd6 cuboctahedra, corners with six equivalent Cd(1)Mg8 cuboctahedra, corners with eight equivalent Mg(2)Mg10Cd2 cuboctahedra,  an edgeedge with one Mg(2)Mg10Cd2 cuboctahedra,  an edgeedge with one Cd(1)Mg8 cuboctahedra, edges with eight equivalent Mg(1)Mg4Cd6 cuboctahedra, faces with six equivalent Mg(1)Mg4Cd6 cuboctahedra, and faces with eight equivalent Mg(2)Mg10Cd2 cuboctahedra. In the second Mg site, Mg(2) is bonded to four equivalent Mg(1), six equivalent Mg(2), and two equivalent Cd(1) atoms to form distorted MgMg10Cd2 cuboctahedra that share corners with six equivalent Mg(2)Mg10Cd2 cuboctahedra, corners with eight equivalent Mg(1)Mg4Cd6 cuboctahedra, corners with twelve equivalent Cd(1)Mg8 cuboctahedra,  an edgeedge with one Mg(1)Mg4Cd6 cuboctahedra, edges with four equivalent Mg(2)Mg10Cd2 cuboctahedra, edges with five equivalent Cd(1)Mg8 cuboctahedra, faces with four equivalent Cd(1)Mg8 cuboctahedra, faces with eight equivalent Mg(2)Mg10Cd2 cuboctahedra, and faces with eight equivalent Mg(1)Mg4Cd6 cuboctahedra. Cd(1) is bonded to two equivalent Mg(2) and six equivalent Mg(1) atoms to form distorted CdMg8 cuboctahedra that share corners with four equivalent Cd(1)Mg8 cuboctahedra, corners with six equivalent Mg(1)Mg4Cd6 cuboctahedra, corners with twelve equivalent Mg(2)Mg10Cd2 cuboctahedra,  an edgeedge with one Mg(1)Mg4Cd6 cuboctahedra, edges with five equivalent Mg(2)Mg10Cd2 cuboctahedra, edges with six equivalent Cd(1)Mg8 cuboctahedra, faces with four equivalent Mg(2)Mg10Cd2 cuboctahedra, and faces with four equivalent Cd(1)Mg8 cuboctahedra. is represented by the CIF file [CIF]
data_Mg2Cd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.120
_cell_length_b   8.120
_cell_length_c   4.994
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   156.988
_symmetry_Int_Tables_number   1
_cell_volume   128.716
_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  0.104  0.896  0.250  1.0
  Mg  Mg1  1  0.778  0.222  0.250  1.0
  Mg  Mg2  1  0.222  0.778  0.750  1.0
  Mg  Mg3  1  0.896  0.104  0.750  1.0
  Cd  Cd4  1  0.441  0.559  0.250  1.0
  Cd  Cd5  1  0.559  0.441  0.750  1.0
[/CIF]
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The material structure described by Mg2Cd crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to four equivalent Mg(2) and six equivalent Cd(1) atoms to form distorted MgMg4Cd6 cuboctahedra that share corners with four equivalent Mg(1)Mg4Cd6 cuboctahedra, corners with six equivalent Cd(1)Mg8 cuboctahedra, corners with eight equivalent Mg(2)Mg10Cd2 cuboctahedra,  an edgeedge with one Mg(2)Mg10Cd2 cuboctahedra,  an edgeedge with one Cd(1)Mg8 cuboctahedra, edges with eight equivalent Mg(1)Mg4Cd6 cuboctahedra, faces with six equivalent Mg(1)Mg4Cd6 cuboctahedra, and faces with eight equivalent Mg(2)Mg10Cd2 cuboctahedra. In the second Mg site, Mg(2) is bonded to four equivalent Mg(1), six equivalent Mg(2), and two equivalent Cd(1) atoms to form distorted MgMg10Cd2 cuboctahedra that share corners with six equivalent Mg(2)Mg10Cd2 cuboctahedra, corners with eight equivalent Mg(1)Mg4Cd6 cuboctahedra, corners with twelve equivalent Cd(1)Mg8 cuboctahedra,  an edgeedge with one Mg(1)Mg4Cd6 cuboctahedra, edges with four equivalent Mg(2)Mg10Cd2 cuboctahedra, edges with five equivalent Cd(1)Mg8 cuboctahedra, faces with four equivalent Cd(1)Mg8 cuboctahedra, faces with eight equivalent Mg(2)Mg10Cd2 cuboctahedra, and faces with eight equivalent Mg(1)Mg4Cd6 cuboctahedra. Cd(1) is bonded to two equivalent Mg(2) and six equivalent Mg(1) atoms to form distorted CdMg8 cuboctahedra that share corners with four equivalent Cd(1)Mg8 cuboctahedra, corners with six equivalent Mg(1)Mg4Cd6 cuboctahedra, corners with twelve equivalent Mg(2)Mg10Cd2 cuboctahedra,  an edgeedge with one Mg(1)Mg4Cd6 cuboctahedra, edges with five equivalent Mg(2)Mg10Cd2 cuboctahedra, edges with six equivalent Cd(1)Mg8 cuboctahedra, faces with four equivalent Mg(2)Mg10Cd2 cuboctahedra, and faces with four equivalent Cd(1)Mg8 cuboctahedra. is represented by the CIF file [CIF]
data_Mg2Cd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.120
_cell_length_b   8.120
_cell_length_c   4.994
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   156.988
_symmetry_Int_Tables_number   1
_cell_volume   128.716
_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  0.104  0.896  0.250  1.0
  Mg  Mg1  1  0.778  0.222  0.250  1.0
  Mg  Mg2  1  0.222  0.778  0.750  1.0
  Mg  Mg3  1  0.896  0.104  0.750  1.0
  Cd  Cd4  1  0.441  0.559  0.250  1.0
  Cd  Cd5  1  0.559  0.441  0.750  1.0
[/CIF]
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