data_Si2BiPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.7
_cell_length_b   5.58
_cell_length_c   4.02
_cell_angle_alpha   70.65
_cell_angle_beta   67.63
_cell_angle_gamma   41.73
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2BiPt
_chemical_formula_sum   'Si2 Bi1 Pt1'
_cell_volume   78.41
_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
  Si  Si2  1  0.73  0.48  0.44  1.0
  Si  Si3  1  0.0  0.48  0.44  1.0
  Bi  Bi0  1  0.73  0.95  0.87  1.0
  Pt  Pt1  1  0.0  0.0  0.0  1.0

data_Si2BiPt
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.02
_cell_length_b   4.02
_cell_length_c   5.58
_cell_angle_alpha   109.35
_cell_angle_beta   109.35
_cell_angle_gamma   94.53
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2BiPt
_chemical_formula_sum   'Si2 Bi1 Pt1'
_cell_volume   78.41
_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
  Si  Si0  1  0.0  0.56  0.48  1.0
  Si  Si1  1  0.73  0.56  0.2  1.0
  Bi  Bi2  1  0.73  0.13  0.68  1.0
  Pt  Pt3  1  0.0  0.0  0.0  1.0

Si Si Bi Pt
PtSi2Bi crystallizes in the triclinic P1 space group. Pt(1) is bonded in a 7-coordinate geometry to two equivalent Si(2), three equivalent Si(1), and two equivalent Bi(1) atoms. There is one shorter (2.86 Å) and one longer (2.87 Å) Pt(1)-Si(2) bond length. There are a spread of Pt(1)-Si(1) bond distances ranging from 2.67-3.16 Å. There is one shorter (2.02 Å) and one longer (3.26 Å) Pt(1)-Bi(1) bond length. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 6-coordinate geometry to three equivalent Pt(1), one Si(2), and two equivalent Bi(1) atoms. The Si(1)-Si(2) bond length is 1.56 Å. There is one shorter (2.86 Å) and one longer (2.87 Å) Si(1)-Bi(1) bond length. In the second Si site, Si(2) is bonded in a 6-coordinate geometry to two equivalent Pt(1), one Si(1), and three equivalent Bi(1) atoms. There are a spread of Si(2)-Bi(1) bond distances ranging from 2.67-3.16 Å. Bi(1) is bonded in a distorted single-bond geometry to two equivalent Pt(1), two equivalent Si(1), and three equivalent Si(2) atoms.