The structure described by SmPt3Si crystallizes in the tetragonal P4mm space group. Sm(1) is bonded in a 16-coordinate geometry to four equivalent Pt(2), eight equivalent Pt(1), and four equivalent Si(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted bent 120 degrees geometry to four equivalent Sm(1) and two equivalent Si(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to four equivalent Sm(1) and one Si(1) atom. Si(1) is bonded in a 5-coordinate geometry to four equivalent Sm(1), one Pt(2), and four equivalent Pt(1) atoms. is represented by the CIF file [CIF]
data_SmSiPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.065
_cell_length_b   4.065
_cell_length_c   5.461
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   90.245
_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
  Sm  Sm0  1  0.500  0.500  0.701  1.0
  Si  Si1  1  0.000  0.000  0.966  1.0
  Pt  Pt2  1  0.500  0.000  0.196  1.0
  Pt  Pt3  1  0.000  0.500  0.196  1.0
  Pt  Pt4  1  0.000  0.000  0.549  1.0
[/CIF]
.
The structure described by SmPt3Si crystallizes in the tetragonal P4mm space group. Sm(1) is bonded in a 16-coordinate geometry to four equivalent Pt(2), eight equivalent Pt(1), and four equivalent Si(1) atoms. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a distorted bent 120 degrees geometry to four equivalent Sm(1) and two equivalent Si(1) atoms. In the second Pt site, Pt(2) is bonded in a 5-coordinate geometry to four equivalent Sm(1) and one Si(1) atom. Si(1) is bonded in a 5-coordinate geometry to four equivalent Sm(1), one Pt(2), and four equivalent Pt(1) atoms. is represented by the CIF file [CIF]
data_SmSiPt3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.065
_cell_length_b   4.065
_cell_length_c   5.461
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   90.245
_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
  Sm  Sm0  1  0.500  0.500  0.701  1.0
  Si  Si1  1  0.000  0.000  0.966  1.0
  Pt  Pt2  1  0.500  0.000  0.196  1.0
  Pt  Pt3  1  0.000  0.500  0.196  1.0
  Pt  Pt4  1  0.000  0.000  0.549  1.0
[/CIF]
.