The structure described by Pt6AlSi is Uranium Silicide-derived structured and crystallizes in the orthorhombic Cmmm space group. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Pt(2), four equivalent Pt(3), two equivalent Al(1), and two equivalent Si(1) atoms to form distorted PtAl2Si2Pt8 cuboctahedra that share corners with twelve equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with four equivalent Al(1)Pt12 cuboctahedra, edges with four equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with six equivalent Pt(1)Al2Si2Pt8 cuboctahedra. In the second Pt site, Pt(2) is bonded to four equivalent Pt(1), four equivalent Pt(3), two equivalent Al(1), and two equivalent Si(1) atoms to form distorted PtAl2Si2Pt8 cuboctahedra that share corners with twelve equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with four equivalent Al(1)Pt12 cuboctahedra, edges with four equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with six equivalent Pt(2)Al2Si2Pt8 cuboctahedra. In the third Pt site, Pt(3) is bonded to four equivalent Pt(1), four equivalent Pt(2), two equivalent Al(1), and two equivalent Si(1) atoms to form distorted PtAl2Si2Pt8 cuboctahedra that share corners with twelve equivalent Pt(3)Al2Si2Pt8 cuboctahedra, edges with four equivalent Al(1)Pt12 cuboctahedra, edges with four equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, and faces with six equivalent Pt(3)Al2Si2Pt8 cuboctahedra. Al(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Pt(3) atoms to form AlPt12 cuboctahedra that share corners with four equivalent Al(1)Pt12 cuboctahedra, corners with eight equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with four equivalent Si(1)Pt12 cuboctahedra. Si(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Pt(3) atoms to form SiPt12 cuboctahedra that share corners with four equivalent Si(1)Pt12 cuboctahedra, corners with eight equivalent Al(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with four equivalent Al(1)Pt12 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlSiPt6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.543
_cell_length_b   5.543
_cell_length_c   3.917
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.729
_symmetry_Int_Tables_number   1
_cell_volume   120.314
_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
  Al  Al0  1  0.500  0.500  0.500  1.0
  Si  Si1  1  0.000  0.000  0.500  1.0
  Pt  Pt2  1  0.735  0.265  0.000  1.0
  Pt  Pt3  1  0.265  0.735  0.000  1.0
  Pt  Pt4  1  0.234  0.234  0.000  1.0
  Pt  Pt5  1  0.766  0.766  0.000  1.0
  Pt  Pt6  1  0.000  0.500  0.500  1.0
  Pt  Pt7  1  0.500  0.000  0.500  1.0
[/CIF]
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The structure described by Pt6AlSi is Uranium Silicide-derived structured and crystallizes in the orthorhombic Cmmm space group. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Pt(2), four equivalent Pt(3), two equivalent Al(1), and two equivalent Si(1) atoms to form distorted PtAl2Si2Pt8 cuboctahedra that share corners with twelve equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with four equivalent Al(1)Pt12 cuboctahedra, edges with four equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with six equivalent Pt(1)Al2Si2Pt8 cuboctahedra. In the second Pt site, Pt(2) is bonded to four equivalent Pt(1), four equivalent Pt(3), two equivalent Al(1), and two equivalent Si(1) atoms to form distorted PtAl2Si2Pt8 cuboctahedra that share corners with twelve equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with four equivalent Al(1)Pt12 cuboctahedra, edges with four equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with six equivalent Pt(2)Al2Si2Pt8 cuboctahedra. In the third Pt site, Pt(3) is bonded to four equivalent Pt(1), four equivalent Pt(2), two equivalent Al(1), and two equivalent Si(1) atoms to form distorted PtAl2Si2Pt8 cuboctahedra that share corners with twelve equivalent Pt(3)Al2Si2Pt8 cuboctahedra, edges with four equivalent Al(1)Pt12 cuboctahedra, edges with four equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, and faces with six equivalent Pt(3)Al2Si2Pt8 cuboctahedra. Al(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Pt(3) atoms to form AlPt12 cuboctahedra that share corners with four equivalent Al(1)Pt12 cuboctahedra, corners with eight equivalent Si(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Al(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with four equivalent Si(1)Pt12 cuboctahedra. Si(1) is bonded to four equivalent Pt(1), four equivalent Pt(2), and four equivalent Pt(3) atoms to form SiPt12 cuboctahedra that share corners with four equivalent Si(1)Pt12 cuboctahedra, corners with eight equivalent Al(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(2)Al2Si2Pt8 cuboctahedra, edges with eight equivalent Pt(3)Al2Si2Pt8 cuboctahedra, faces with two equivalent Si(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(2)Al2Si2Pt8 cuboctahedra, faces with four equivalent Pt(3)Al2Si2Pt8 cuboctahedra, and faces with four equivalent Al(1)Pt12 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_AlSiPt6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.543
_cell_length_b   5.543
_cell_length_c   3.917
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.729
_symmetry_Int_Tables_number   1
_cell_volume   120.314
_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
  Al  Al0  1  0.500  0.500  0.500  1.0
  Si  Si1  1  0.000  0.000  0.500  1.0
  Pt  Pt2  1  0.735  0.265  0.000  1.0
  Pt  Pt3  1  0.265  0.735  0.000  1.0
  Pt  Pt4  1  0.234  0.234  0.000  1.0
  Pt  Pt5  1  0.766  0.766  0.000  1.0
  Pt  Pt6  1  0.000  0.500  0.500  1.0
  Pt  Pt7  1  0.500  0.000  0.500  1.0
[/CIF]
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