The structure described by Pt2Si crystallizes in the hexagonal P-62m space group. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 5-coordinate geometry to one Si(2) and four equivalent Si(1) atoms. In the second Pt site, Pt(2) is bonded to two equivalent Si(1) and two equivalent Si(2) atoms to form a mixture of distorted edge and corner-sharing PtSi4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Pt(2) and six equivalent Pt(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to three equivalent Pt(1) and six equivalent Pt(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SiPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.547
_cell_length_b   6.547
_cell_length_c   3.614
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   134.168
_cell_formula_units_Z   3
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  0.667  0.333  0.000  1.0
  Si  Si1  1  0.333  0.667  0.000  1.0
  Si  Si2  1  0.000  0.000  0.500  1.0
  Pt  Pt3  1  0.619  0.000  0.500  1.0
  Pt  Pt4  1  0.381  0.381  0.500  1.0
  Pt  Pt5  1  0.000  0.619  0.500  1.0
  Pt  Pt6  1  0.000  0.277  0.000  1.0
  Pt  Pt7  1  0.723  0.723  0.000  1.0
  Pt  Pt8  1  0.277  0.000  0.000  1.0
[/CIF]
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The structure described by Pt2Si crystallizes in the hexagonal P-62m space group. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 5-coordinate geometry to one Si(2) and four equivalent Si(1) atoms. In the second Pt site, Pt(2) is bonded to two equivalent Si(1) and two equivalent Si(2) atoms to form a mixture of distorted edge and corner-sharing PtSi4 tetrahedra. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to three equivalent Pt(2) and six equivalent Pt(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to three equivalent Pt(1) and six equivalent Pt(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SiPt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.547
_cell_length_b   6.547
_cell_length_c   3.614
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   134.168
_cell_formula_units_Z   3
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  0.667  0.333  0.000  1.0
  Si  Si1  1  0.333  0.667  0.000  1.0
  Si  Si2  1  0.000  0.000  0.500  1.0
  Pt  Pt3  1  0.619  0.000  0.500  1.0
  Pt  Pt4  1  0.381  0.381  0.500  1.0
  Pt  Pt5  1  0.000  0.619  0.500  1.0
  Pt  Pt6  1  0.000  0.277  0.000  1.0
  Pt  Pt7  1  0.723  0.723  0.000  1.0
  Pt  Pt8  1  0.277  0.000  0.000  1.0
[/CIF]
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