The material described by SmPtSi3 crystallizes in the tetragonal I4mm space group. Sm(1) is bonded in a 17-coordinate geometry to five equivalent Pt(1), four equivalent Si(2), and eight equivalent Si(1) atoms. Pt(1) is bonded in a 5-coordinate geometry to five equivalent Sm(1), one Si(2), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted bent 120 degrees geometry to four equivalent Sm(1) and two equivalent Pt(1) atoms. In the second Si site, Si(2) is bonded in a distorted single-bond geometry to four equivalent Sm(1) and one Pt(1) atom. is represented by the CIF card [CIF]
data_SmSi3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.320
_cell_length_b   4.320
_cell_length_c   5.688
_cell_angle_alpha   112.321
_cell_angle_beta   112.321
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   89.546
_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  0.577  0.577  0.153  1.0
  Si  Si1  1  0.340  0.840  0.681  1.0
  Si  Si2  1  0.840  0.340  0.681  1.0
  Si  Si3  1  0.976  0.976  0.952  1.0
  Pt  Pt4  1  0.224  0.224  0.449  1.0
[/CIF]
.
The material described by SmPtSi3 crystallizes in the tetragonal I4mm space group. Sm(1) is bonded in a 17-coordinate geometry to five equivalent Pt(1), four equivalent Si(2), and eight equivalent Si(1) atoms. Pt(1) is bonded in a 5-coordinate geometry to five equivalent Sm(1), one Si(2), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted bent 120 degrees geometry to four equivalent Sm(1) and two equivalent Pt(1) atoms. In the second Si site, Si(2) is bonded in a distorted single-bond geometry to four equivalent Sm(1) and one Pt(1) atom. is represented by the CIF card [CIF]
data_SmSi3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.320
_cell_length_b   4.320
_cell_length_c   5.688
_cell_angle_alpha   112.321
_cell_angle_beta   112.321
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   89.546
_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  0.577  0.577  0.153  1.0
  Si  Si1  1  0.340  0.840  0.681  1.0
  Si  Si2  1  0.840  0.340  0.681  1.0
  Si  Si3  1  0.976  0.976  0.952  1.0
  Pt  Pt4  1  0.224  0.224  0.449  1.0
[/CIF]
.