data_LaSi2Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.3
_cell_length_b   4.26
_cell_length_c   4.64
_cell_angle_alpha   90.0
_cell_angle_beta   100.39
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaSi2Pt
_chemical_formula_sum   'La1 Si2 Pt1'
_cell_volume   83.67
_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
  La  La0  1  0.0  0.0  0.0  1.0
  Si  Si2  1  0.54  0.13  0.31  1.0
  Si  Si3  1  0.92  0.13  0.25  1.0
  Pt  Pt1  1  0.73  0.0  0.28  1.0

data_LaSi2Pt
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.26
_cell_length_b   4.3
_cell_length_c   4.64
_cell_angle_alpha   100.39
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaSi2Pt
_chemical_formula_sum   'La1 Si2 Pt1'
_cell_volume   83.67
_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
  La  La0  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.87  0.08  0.75  1.0
  Si  Si2  1  0.87  0.46  0.69  1.0
  Pt  Pt3  1  0.0  0.27  0.72  1.0

La Si Si Pt
LaPtSi2 is beta Polonium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one LaPtSi2 cluster. La(1) is bonded in a distorted single-bond geometry to one Si(2) atom. The La(1)-Si(2) bond length is 1.38 Å. Pt(1) is bonded in a bent 120 degrees geometry to one Si(1) and one Si(2) atom. The Pt(1)-Si(1) bond length is 1.02 Å. The Pt(1)-Si(2) bond length is 1.02 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a single-bond geometry to one Pt(1) atom. In the second Si site, Si(2) is bonded in a water-like geometry to one La(1) and one Pt(1) atom.