The structure described by Mg2Cd crystallizes in the monoclinic C2/c space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to seven Mg(1,1,1) and five equivalent Cd(1) atoms to form distorted MgMg7Cd5 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1)Mg7Cd5 cuboctahedra; edges with four equivalent Cd(1)Mg10Cd2 cuboctahedra; edges with fourteen Mg(1,1,1)Mg7Cd5 cuboctahedra; faces with eight equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra. In the second Mg site, Mg(1) is bonded to seven Mg(1,1,1) and five equivalent Cd(1) atoms to form distorted MgMg7Cd5 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1)Mg7Cd5 cuboctahedra; edges with four equivalent Cd(1)Mg10Cd2 cuboctahedra; edges with fourteen Mg(1,1,1)Mg7Cd5 cuboctahedra; faces with eight equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra. In the third Mg site, Mg(1) is bonded to seven Mg(1,1) and five equivalent Cd(1) atoms to form distorted MgMg7Cd5 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra; edges with four equivalent Cd(1)Mg10Cd2 cuboctahedra; edges with fourteen Mg(1,1,1)Mg7Cd5 cuboctahedra; faces with eight equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with twelve Mg(1,1)Mg7Cd5 cuboctahedra. Cd(1) is bonded to ten Mg(1,1,1) and two equivalent Cd(1) atoms to form distorted CdMg10Cd2 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra; edges with eight Mg(1,1)Mg7Cd5 cuboctahedra; edges with ten equivalent Cd(1)Mg10Cd2 cuboctahedra; faces with four equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with sixteen Mg(1,1,1)Mg7Cd5 cuboctahedra. is represented by the CIF card [CIF]
data_Mg2Cd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.353
_cell_length_b   5.353
_cell_length_c   6.150
_cell_angle_alpha   62.045
_cell_angle_beta   62.045
_cell_angle_gamma   59.466
_symmetry_Int_Tables_number   1
_cell_volume   127.756
_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  0.247  0.415  0.753  1.0
  Mg  Mg1  1  0.585  0.753  0.747  1.0
  Mg  Mg2  1  0.415  0.247  0.253  1.0
  Mg  Mg3  1  0.753  0.585  0.247  1.0
  Cd  Cd4  1  0.085  0.915  0.250  1.0
  Cd  Cd5  1  0.915  0.085  0.750  1.0
[/CIF]
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The structure described by Mg2Cd crystallizes in the monoclinic C2/c space group. There are three inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to seven Mg(1,1,1) and five equivalent Cd(1) atoms to form distorted MgMg7Cd5 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1)Mg7Cd5 cuboctahedra; edges with four equivalent Cd(1)Mg10Cd2 cuboctahedra; edges with fourteen Mg(1,1,1)Mg7Cd5 cuboctahedra; faces with eight equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra. In the second Mg site, Mg(1) is bonded to seven Mg(1,1,1) and five equivalent Cd(1) atoms to form distorted MgMg7Cd5 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1)Mg7Cd5 cuboctahedra; edges with four equivalent Cd(1)Mg10Cd2 cuboctahedra; edges with fourteen Mg(1,1,1)Mg7Cd5 cuboctahedra; faces with eight equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra. In the third Mg site, Mg(1) is bonded to seven Mg(1,1) and five equivalent Cd(1) atoms to form distorted MgMg7Cd5 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra; edges with four equivalent Cd(1)Mg10Cd2 cuboctahedra; edges with fourteen Mg(1,1,1)Mg7Cd5 cuboctahedra; faces with eight equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with twelve Mg(1,1)Mg7Cd5 cuboctahedra. Cd(1) is bonded to ten Mg(1,1,1) and two equivalent Cd(1) atoms to form distorted CdMg10Cd2 cuboctahedra that share corners with six equivalent Cd(1)Mg10Cd2 cuboctahedra; corners with twelve Mg(1,1,1)Mg7Cd5 cuboctahedra; edges with eight Mg(1,1)Mg7Cd5 cuboctahedra; edges with ten equivalent Cd(1)Mg10Cd2 cuboctahedra; faces with four equivalent Cd(1)Mg10Cd2 cuboctahedra; and faces with sixteen Mg(1,1,1)Mg7Cd5 cuboctahedra. is represented by the CIF card [CIF]
data_Mg2Cd
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.353
_cell_length_b   5.353
_cell_length_c   6.150
_cell_angle_alpha   62.045
_cell_angle_beta   62.045
_cell_angle_gamma   59.466
_symmetry_Int_Tables_number   1
_cell_volume   127.756
_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  0.247  0.415  0.753  1.0
  Mg  Mg1  1  0.585  0.753  0.747  1.0
  Mg  Mg2  1  0.415  0.247  0.253  1.0
  Mg  Mg3  1  0.753  0.585  0.247  1.0
  Cd  Cd4  1  0.085  0.915  0.250  1.0
  Cd  Cd5  1  0.915  0.085  0.750  1.0
[/CIF]
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