data_SnSbPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.98
_cell_length_b   4.98
_cell_length_c   4.98
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SnSbPt3
_chemical_formula_sum   'Sn1 Sb1 Pt3'
_cell_volume   123.45
_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
  Sn  Sn1  1  0.0  0.0  0.0  1.0
  Sb  Sb0  1  0.49  0.49  0.49  1.0
  Pt  Pt2  1  0.49  0.0  0.49  1.0
  Pt  Pt3  1  0.49  0.49  0.0  1.0
  Pt  Pt4  1  0.0  0.49  0.49  1.0

data_SnSbPt3
_symmetry_space_group_name_H-M   R3m
_cell_length_a   7.04
_cell_length_b   7.04
_cell_length_c   8.62
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SnSbPt3
_chemical_formula_sum   'Sn3 Sb3 Pt9'
_cell_volume   370.36
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Sn  Sn0  3  0.0  0.0  0.0  1.0
  Sb  Sb1  3  0.0  0.0  0.49  1.0
  Pt  Pt2  9  0.01  0.5  0.99  1.0

Sn Sb Pt Pt Pt
Pt3SnSb is (Cubic) Perovskite structured and crystallizes in the trigonal R3m space group. Pt(1) is bonded in a linear geometry to one Sn(1) and two equivalent Sb(1) atoms. The Pt(1)-Sn(1) bond length is 3.45 Å. There is one shorter (2.44 Å) and one longer (2.54 Å) Pt(1)-Sb(1) bond length. Sn(1) is bonded in a 3-coordinate geometry to three equivalent Pt(1) atoms. Sb(1) is bonded to six equivalent Pt(1) atoms to form corner-sharing SbPt6 octahedra. The corner-sharing octahedra are not tilted.