The crystal structure described by Pt3Sb is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Sb(1) atoms to form PtSb4Pt8 cuboctahedra that share corners with twelve equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, and faces with ten equivalent Pt(1)Sb4Pt8 cuboctahedra. In the second Pt site, Pt(2) is bonded to eight equivalent Pt(1) and four equivalent Sb(1) atoms to form PtSb4Pt8 cuboctahedra that share corners with four equivalent Pt(2)Sb4Pt8 cuboctahedra, corners with eight equivalent Sb(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with sixteen equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with six equivalent Sb(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(1)Sb4Pt8 cuboctahedra. Sb(1) is bonded to four equivalent Pt(2) and eight equivalent Pt(1) atoms to form SbPt12 cuboctahedra that share corners with four equivalent Sb(1)Pt12 cuboctahedra, corners with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, faces with six equivalent Pt(2)Sb4Pt8 cuboctahedra, and faces with eight equivalent Pt(1)Sb4Pt8 cuboctahedra. is represented by the CIF file [CIF]
data_SbPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.091
_cell_length_b   5.091
_cell_length_c   5.091
_cell_angle_alpha   133.143
_cell_angle_beta   133.143
_cell_angle_gamma   68.430
_symmetry_Int_Tables_number   1
_cell_volume   68.996
_cell_formula_units_Z   1
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
  Sb  Sb0  1  0.000  0.000  0.000  1.0
  Pt  Pt1  1  0.750  0.250  0.500  1.0
  Pt  Pt2  1  0.250  0.750  0.500  1.0
  Pt  Pt3  1  0.500  0.500  0.000  1.0
[/CIF]
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The crystal structure described by Pt3Sb is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Sb(1) atoms to form PtSb4Pt8 cuboctahedra that share corners with twelve equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, and faces with ten equivalent Pt(1)Sb4Pt8 cuboctahedra. In the second Pt site, Pt(2) is bonded to eight equivalent Pt(1) and four equivalent Sb(1) atoms to form PtSb4Pt8 cuboctahedra that share corners with four equivalent Pt(2)Sb4Pt8 cuboctahedra, corners with eight equivalent Sb(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with sixteen equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with six equivalent Sb(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(1)Sb4Pt8 cuboctahedra. Sb(1) is bonded to four equivalent Pt(2) and eight equivalent Pt(1) atoms to form SbPt12 cuboctahedra that share corners with four equivalent Sb(1)Pt12 cuboctahedra, corners with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, faces with six equivalent Pt(2)Sb4Pt8 cuboctahedra, and faces with eight equivalent Pt(1)Sb4Pt8 cuboctahedra. is represented by the CIF file [CIF]
data_SbPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.091
_cell_length_b   5.091
_cell_length_c   5.091
_cell_angle_alpha   133.143
_cell_angle_beta   133.143
_cell_angle_gamma   68.430
_symmetry_Int_Tables_number   1
_cell_volume   68.996
_cell_formula_units_Z   1
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
  Sb  Sb0  1  0.000  0.000  0.000  1.0
  Pt  Pt1  1  0.750  0.250  0.500  1.0
  Pt  Pt2  1  0.250  0.750  0.500  1.0
  Pt  Pt3  1  0.500  0.500  0.000  1.0
[/CIF]
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