The structure described by Ag3Cd is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to eight equivalent Ag(1) and four equivalent Cd(1) atoms to form AgCd4Ag8 cuboctahedra that share corners with four equivalent Cd(1)Ag12 cuboctahedra; corners with fourteen Ag(1,1)Cd4Ag8 cuboctahedra; edges with six equivalent Cd(1)Ag12 cuboctahedra; edges with twelve equivalent Ag(1)Cd4Ag8 cuboctahedra; faces with four equivalent Cd(1)Ag12 cuboctahedra; and faces with sixteen Ag(1,1,1)Cd4Ag8 cuboctahedra. In the second Ag site, Ag(1) is bonded to eight Ag(1,1,1) and four equivalent Cd(1) atoms to form AgCd4Ag8 cuboctahedra that share corners with four equivalent Cd(1)Ag12 cuboctahedra; corners with fourteen Ag(1,1)Cd4Ag8 cuboctahedra; edges with six equivalent Cd(1)Ag12 cuboctahedra; edges with twelve Ag(1,1,1)Cd4Ag8 cuboctahedra; faces with four equivalent Cd(1)Ag12 cuboctahedra; and faces with sixteen Ag(1,1,1)Cd4Ag8 cuboctahedra. In the third Ag site, Ag(1) is bonded to eight equivalent Ag(1) and four equivalent Cd(1) atoms to form AgCd4Ag8 cuboctahedra that share corners with four equivalent Cd(1)Ag12 cuboctahedra; corners with fourteen Ag(1,1)Cd4Ag8 cuboctahedra; edges with six equivalent Cd(1)Ag12 cuboctahedra; edges with twelve equivalent Ag(1)Cd4Ag8 cuboctahedra; faces with four equivalent Cd(1)Ag12 cuboctahedra; and faces with sixteen Ag(1,1,1)Cd4Ag8 cuboctahedra. Cd(1) is bonded to twelve Ag(1,1,1) atoms to form CdAg12 cuboctahedra that share corners with six equivalent Cd(1)Ag12 cuboctahedra; corners with twelve Ag(1,1)Cd4Ag8 cuboctahedra; edges with eighteen Ag(1,1,1)Cd4Ag8 cuboctahedra; faces with eight equivalent Cd(1)Ag12 cuboctahedra; and faces with twelve Ag(1,1,1)Cd4Ag8 cuboctahedra. is represented by the CIF file [CIF]
data_CdAg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.844
_cell_length_b   5.844
_cell_length_c   4.868
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   143.986
_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
  Cd  Cd0  1  0.333  0.667  0.750  1.0
  Cd  Cd1  1  0.667  0.333  0.250  1.0
  Ag  Ag2  1  0.166  0.331  0.250  1.0
  Ag  Ag3  1  0.669  0.834  0.250  1.0
  Ag  Ag4  1  0.166  0.834  0.250  1.0
  Ag  Ag5  1  0.834  0.669  0.750  1.0
  Ag  Ag6  1  0.331  0.166  0.750  1.0
  Ag  Ag7  1  0.834  0.166  0.750  1.0
[/CIF]
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The structure described by Ag3Cd is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to eight equivalent Ag(1) and four equivalent Cd(1) atoms to form AgCd4Ag8 cuboctahedra that share corners with four equivalent Cd(1)Ag12 cuboctahedra; corners with fourteen Ag(1,1)Cd4Ag8 cuboctahedra; edges with six equivalent Cd(1)Ag12 cuboctahedra; edges with twelve equivalent Ag(1)Cd4Ag8 cuboctahedra; faces with four equivalent Cd(1)Ag12 cuboctahedra; and faces with sixteen Ag(1,1,1)Cd4Ag8 cuboctahedra. In the second Ag site, Ag(1) is bonded to eight Ag(1,1,1) and four equivalent Cd(1) atoms to form AgCd4Ag8 cuboctahedra that share corners with four equivalent Cd(1)Ag12 cuboctahedra; corners with fourteen Ag(1,1)Cd4Ag8 cuboctahedra; edges with six equivalent Cd(1)Ag12 cuboctahedra; edges with twelve Ag(1,1,1)Cd4Ag8 cuboctahedra; faces with four equivalent Cd(1)Ag12 cuboctahedra; and faces with sixteen Ag(1,1,1)Cd4Ag8 cuboctahedra. In the third Ag site, Ag(1) is bonded to eight equivalent Ag(1) and four equivalent Cd(1) atoms to form AgCd4Ag8 cuboctahedra that share corners with four equivalent Cd(1)Ag12 cuboctahedra; corners with fourteen Ag(1,1)Cd4Ag8 cuboctahedra; edges with six equivalent Cd(1)Ag12 cuboctahedra; edges with twelve equivalent Ag(1)Cd4Ag8 cuboctahedra; faces with four equivalent Cd(1)Ag12 cuboctahedra; and faces with sixteen Ag(1,1,1)Cd4Ag8 cuboctahedra. Cd(1) is bonded to twelve Ag(1,1,1) atoms to form CdAg12 cuboctahedra that share corners with six equivalent Cd(1)Ag12 cuboctahedra; corners with twelve Ag(1,1)Cd4Ag8 cuboctahedra; edges with eighteen Ag(1,1,1)Cd4Ag8 cuboctahedra; faces with eight equivalent Cd(1)Ag12 cuboctahedra; and faces with twelve Ag(1,1,1)Cd4Ag8 cuboctahedra. is represented by the CIF file [CIF]
data_CdAg3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.844
_cell_length_b   5.844
_cell_length_c   4.868
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   143.986
_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
  Cd  Cd0  1  0.333  0.667  0.750  1.0
  Cd  Cd1  1  0.667  0.333  0.250  1.0
  Ag  Ag2  1  0.166  0.331  0.250  1.0
  Ag  Ag3  1  0.669  0.834  0.250  1.0
  Ag  Ag4  1  0.166  0.834  0.250  1.0
  Ag  Ag5  1  0.834  0.669  0.750  1.0
  Ag  Ag6  1  0.331  0.166  0.750  1.0
  Ag  Ag7  1  0.834  0.166  0.750  1.0
[/CIF]
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