The crystal structure described by SmPtSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Sm(1) is bonded to six Pt(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing SmSi6Pt6 cuboctahedra. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. In the second Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three Pt(1,1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmSiPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.778
_cell_length_b   7.778
_cell_length_c   7.778
_cell_angle_alpha   148.960
_cell_angle_beta   148.960
_cell_angle_gamma   44.469
_symmetry_Int_Tables_number   1
_cell_volume   124.721
_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
  Sm  Sm0  1  0.752  0.252  0.500  1.0
  Sm  Sm1  1  0.002  0.002  0.000  1.0
  Si  Si2  1  0.333  0.833  0.500  1.0
  Si  Si3  1  0.583  0.583  0.000  1.0
  Pt  Pt4  1  0.165  0.665  0.500  1.0
  Pt  Pt5  1  0.415  0.415  0.000  1.0
[/CIF]
.
The crystal structure described by SmPtSi is hexagonal omega structure-derived structured and crystallizes in the tetragonal I4_1md space group. Sm(1) is bonded to six Pt(1,1) and six equivalent Si(1) atoms to form a mixture of edge and face-sharing SmSi6Pt6 cuboctahedra. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. In the second Pt site, Pt(1) is bonded in a 9-coordinate geometry to six equivalent Sm(1) and three equivalent Si(1) atoms. Si(1) is bonded in a distorted trigonal planar geometry to six equivalent Sm(1) and three Pt(1,1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmSiPt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.778
_cell_length_b   7.778
_cell_length_c   7.778
_cell_angle_alpha   148.960
_cell_angle_beta   148.960
_cell_angle_gamma   44.469
_symmetry_Int_Tables_number   1
_cell_volume   124.721
_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
  Sm  Sm0  1  0.752  0.252  0.500  1.0
  Sm  Sm1  1  0.002  0.002  0.000  1.0
  Si  Si2  1  0.333  0.833  0.500  1.0
  Si  Si3  1  0.583  0.583  0.000  1.0
  Pt  Pt4  1  0.165  0.665  0.500  1.0
  Pt  Pt5  1  0.415  0.415  0.000  1.0
[/CIF]
.