The compound described by MgCd2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to two equivalent Cd(2) and four equivalent Cd(1) atoms to form distorted MgCd6 cuboctahedra that share corners with two equivalent Mg(1)Cd6 cuboctahedra, corners with six equivalent Cd(1)Mg4Cd8 cuboctahedra, corners with twelve equivalent Cd(2)Mg2Cd10 cuboctahedra, edges with six equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Cd(2)Mg2Cd10 cuboctahedra, edges with seven equivalent Cd(1)Mg4Cd8 cuboctahedra, and faces with two equivalent Cd(2)Mg2Cd10 cuboctahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to four equivalent Mg(1), two equivalent Cd(1), and six equivalent Cd(2) atoms to form distorted CdMg4Cd8 cuboctahedra that share corners with six equivalent Mg(1)Cd6 cuboctahedra, corners with six equivalent Cd(2)Mg2Cd10 cuboctahedra, corners with six equivalent Cd(1)Mg4Cd8 cuboctahedra, edges with seven equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Cd(2)Mg2Cd10 cuboctahedra, edges with eight equivalent Cd(1)Mg4Cd8 cuboctahedra, faces with six equivalent Cd(2)Mg2Cd10 cuboctahedra, and faces with six equivalent Cd(1)Mg4Cd8 cuboctahedra. In the second Cd site, Cd(2) is bonded to two equivalent Mg(1), four equivalent Cd(2), and six equivalent Cd(1) atoms to form distorted CdMg2Cd10 cuboctahedra that share corners with six equivalent Cd(2)Mg2Cd10 cuboctahedra, corners with six equivalent Cd(1)Mg4Cd8 cuboctahedra, corners with twelve equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Cd(1)Mg4Cd8 cuboctahedra, faces with two equivalent Mg(1)Cd6 cuboctahedra, faces with six equivalent Cd(1)Mg4Cd8 cuboctahedra, and faces with ten equivalent Cd(2)Mg2Cd10 cuboctahedra. is represented by the CIF card [CIF]
data_MgCd2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.029
_cell_length_b   8.029
_cell_length_c   5.118
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   157.100
_symmetry_Int_Tables_number   1
_cell_volume   128.378
_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  0.280  0.720  0.250  1.0
  Mg  Mg1  1  0.720  0.280  0.750  1.0
  Cd  Cd2  1  0.616  0.384  0.250  1.0
  Cd  Cd3  1  0.946  0.054  0.250  1.0
  Cd  Cd4  1  0.054  0.946  0.750  1.0
  Cd  Cd5  1  0.384  0.616  0.750  1.0
[/CIF]
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The compound described by MgCd2 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to two equivalent Cd(2) and four equivalent Cd(1) atoms to form distorted MgCd6 cuboctahedra that share corners with two equivalent Mg(1)Cd6 cuboctahedra, corners with six equivalent Cd(1)Mg4Cd8 cuboctahedra, corners with twelve equivalent Cd(2)Mg2Cd10 cuboctahedra, edges with six equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Cd(2)Mg2Cd10 cuboctahedra, edges with seven equivalent Cd(1)Mg4Cd8 cuboctahedra, and faces with two equivalent Cd(2)Mg2Cd10 cuboctahedra. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to four equivalent Mg(1), two equivalent Cd(1), and six equivalent Cd(2) atoms to form distorted CdMg4Cd8 cuboctahedra that share corners with six equivalent Mg(1)Cd6 cuboctahedra, corners with six equivalent Cd(2)Mg2Cd10 cuboctahedra, corners with six equivalent Cd(1)Mg4Cd8 cuboctahedra, edges with seven equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Cd(2)Mg2Cd10 cuboctahedra, edges with eight equivalent Cd(1)Mg4Cd8 cuboctahedra, faces with six equivalent Cd(2)Mg2Cd10 cuboctahedra, and faces with six equivalent Cd(1)Mg4Cd8 cuboctahedra. In the second Cd site, Cd(2) is bonded to two equivalent Mg(1), four equivalent Cd(2), and six equivalent Cd(1) atoms to form distorted CdMg2Cd10 cuboctahedra that share corners with six equivalent Cd(2)Mg2Cd10 cuboctahedra, corners with six equivalent Cd(1)Mg4Cd8 cuboctahedra, corners with twelve equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Mg(1)Cd6 cuboctahedra, edges with seven equivalent Cd(1)Mg4Cd8 cuboctahedra, faces with two equivalent Mg(1)Cd6 cuboctahedra, faces with six equivalent Cd(1)Mg4Cd8 cuboctahedra, and faces with ten equivalent Cd(2)Mg2Cd10 cuboctahedra. is represented by the CIF card [CIF]
data_MgCd2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.029
_cell_length_b   8.029
_cell_length_c   5.118
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   157.100
_symmetry_Int_Tables_number   1
_cell_volume   128.378
_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  0.280  0.720  0.250  1.0
  Mg  Mg1  1  0.720  0.280  0.750  1.0
  Cd  Cd2  1  0.616  0.384  0.250  1.0
  Cd  Cd3  1  0.946  0.054  0.250  1.0
  Cd  Cd4  1  0.054  0.946  0.750  1.0
  Cd  Cd5  1  0.384  0.616  0.750  1.0
[/CIF]
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