The structure described by Ag3Sn is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to eight equivalent Ag(2) and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with two equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, corners with eight equivalent Sn(1)Ag12 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra. In the second Ag site, Ag(2) is bonded to four equivalent Ag(1), four equivalent Ag(2), and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with four equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with four equivalent Sn(1)Ag12 cuboctahedra, corners with ten equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, faces with four equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with four equivalent Sn(1)Ag12 cuboctahedra, and faces with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra. Sn(1) is bonded to four equivalent Ag(1) and eight equivalent Ag(2) atoms to form SnAg12 cuboctahedra that share corners with two equivalent Sn(1)Ag12 cuboctahedra, corners with eight equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra. is represented by the CIF card [CIF]
data_Ag3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.775
_cell_length_b   5.215
_cell_length_c   6.056
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   150.814
_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
  Ag  Ag0  1  0.750  0.325  0.250  1.0
  Ag  Ag1  1  0.250  0.675  0.750  1.0
  Ag  Ag2  1  0.250  0.164  0.501  1.0
  Ag  Ag3  1  0.750  0.836  0.499  1.0
  Ag  Ag4  1  0.250  0.164  0.999  1.0
  Ag  Ag5  1  0.750  0.836  0.001  1.0
  Sn  Sn6  1  0.250  0.670  0.250  1.0
  Sn  Sn7  1  0.750  0.330  0.750  1.0
[/CIF]
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The structure described by Ag3Sn is beta Cu3Ti structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to eight equivalent Ag(2) and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with two equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, corners with eight equivalent Sn(1)Ag12 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra. In the second Ag site, Ag(2) is bonded to four equivalent Ag(1), four equivalent Ag(2), and four equivalent Sn(1) atoms to form AgAg8Sn4 cuboctahedra that share corners with four equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with four equivalent Sn(1)Ag12 cuboctahedra, corners with ten equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(1)Ag8Sn4 cuboctahedra, edges with six equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, faces with four equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with four equivalent Sn(1)Ag12 cuboctahedra, and faces with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra. Sn(1) is bonded to four equivalent Ag(1) and eight equivalent Ag(2) atoms to form SnAg12 cuboctahedra that share corners with two equivalent Sn(1)Ag12 cuboctahedra, corners with eight equivalent Ag(1)Ag8Sn4 cuboctahedra, corners with eight equivalent Ag(2)Ag8Sn4 cuboctahedra, edges with six equivalent Sn(1)Ag12 cuboctahedra, edges with twelve equivalent Ag(2)Ag8Sn4 cuboctahedra, faces with six equivalent Ag(1)Ag8Sn4 cuboctahedra, faces with six equivalent Sn(1)Ag12 cuboctahedra, and faces with eight equivalent Ag(2)Ag8Sn4 cuboctahedra. is represented by the CIF card [CIF]
data_Ag3Sn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.775
_cell_length_b   5.215
_cell_length_c   6.056
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   150.814
_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
  Ag  Ag0  1  0.750  0.325  0.250  1.0
  Ag  Ag1  1  0.250  0.675  0.750  1.0
  Ag  Ag2  1  0.250  0.164  0.501  1.0
  Ag  Ag3  1  0.750  0.836  0.499  1.0
  Ag  Ag4  1  0.250  0.164  0.999  1.0
  Ag  Ag5  1  0.750  0.836  0.001  1.0
  Sn  Sn6  1  0.250  0.670  0.250  1.0
  Sn  Sn7  1  0.750  0.330  0.750  1.0
[/CIF]
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