The material structure described by Pt3Sb is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 12-coordinate geometry to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Sb(1) atoms. In the second Pt site, Pt(1) is bonded to four equivalent Pt(1), four equivalent Pt(3), and four equivalent Sb(1) atoms to form PtSb4Pt8 cuboctahedra that share corners with four equivalent Pt(1)Sb4Pt8 cuboctahedra, corners with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, faces with two equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(1)Sb4Pt8 cuboctahedra. In the third Pt site, Pt(2) is bonded to four equivalent Pt(2), four equivalent Pt(3), and four equivalent Sb(1) atoms to form distorted PtSb4Pt8 cuboctahedra that share corners with four equivalent Pt(2)Sb4Pt8 cuboctahedra, corners with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, faces with two equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(2)Sb4Pt8 cuboctahedra. Sb(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Pt(3) atoms to form distorted SbPt12 cuboctahedra that share corners with eight equivalent Sb(1)Pt12 cuboctahedra, edges with four equivalent Sb(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with four equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Pt(2)Sb4Pt8 cuboctahedra, and faces with five equivalent Sb(1)Pt12 cuboctahedra. is represented by the CIF file [CIF]
data_SbPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.045
_cell_length_b   9.045
_cell_length_c   9.045
_cell_angle_alpha   154.752
_cell_angle_beta   154.752
_cell_angle_gamma   36.007
_symmetry_Int_Tables_number   1
_cell_volume   134.471
_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
  Sb  Sb0  1  0.864  0.864  0.000  1.0
  Sb  Sb1  1  0.136  0.136  0.000  1.0
  Pt  Pt2  1  0.000  0.500  0.500  1.0
  Pt  Pt3  1  0.500  0.000  0.500  1.0
  Pt  Pt4  1  0.750  0.250  0.500  1.0
  Pt  Pt5  1  0.250  0.750  0.500  1.0
  Pt  Pt6  1  0.614  0.614  0.000  1.0
  Pt  Pt7  1  0.386  0.386  0.000  1.0
[/CIF]
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The material structure described by Pt3Sb is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. There are three inequivalent Pt sites. In the first Pt site, Pt(3) is bonded in a 12-coordinate geometry to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Sb(1) atoms. In the second Pt site, Pt(1) is bonded to four equivalent Pt(1), four equivalent Pt(3), and four equivalent Sb(1) atoms to form PtSb4Pt8 cuboctahedra that share corners with four equivalent Pt(1)Sb4Pt8 cuboctahedra, corners with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, faces with two equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(1)Sb4Pt8 cuboctahedra. In the third Pt site, Pt(2) is bonded to four equivalent Pt(2), four equivalent Pt(3), and four equivalent Sb(1) atoms to form distorted PtSb4Pt8 cuboctahedra that share corners with four equivalent Pt(2)Sb4Pt8 cuboctahedra, corners with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Sb(1)Pt12 cuboctahedra, faces with two equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Sb(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(2)Sb4Pt8 cuboctahedra. Sb(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Pt(3) atoms to form distorted SbPt12 cuboctahedra that share corners with eight equivalent Sb(1)Pt12 cuboctahedra, edges with four equivalent Sb(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Sb4Pt8 cuboctahedra, edges with eight equivalent Pt(2)Sb4Pt8 cuboctahedra, faces with four equivalent Pt(1)Sb4Pt8 cuboctahedra, faces with four equivalent Pt(2)Sb4Pt8 cuboctahedra, and faces with five equivalent Sb(1)Pt12 cuboctahedra. is represented by the CIF file [CIF]
data_SbPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.045
_cell_length_b   9.045
_cell_length_c   9.045
_cell_angle_alpha   154.752
_cell_angle_beta   154.752
_cell_angle_gamma   36.007
_symmetry_Int_Tables_number   1
_cell_volume   134.471
_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
  Sb  Sb0  1  0.864  0.864  0.000  1.0
  Sb  Sb1  1  0.136  0.136  0.000  1.0
  Pt  Pt2  1  0.000  0.500  0.500  1.0
  Pt  Pt3  1  0.500  0.000  0.500  1.0
  Pt  Pt4  1  0.750  0.250  0.500  1.0
  Pt  Pt5  1  0.250  0.750  0.500  1.0
  Pt  Pt6  1  0.614  0.614  0.000  1.0
  Pt  Pt7  1  0.386  0.386  0.000  1.0
[/CIF]
.