The structure described by Pt3W is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. W(1) is bonded to four equivalent Pt(2) and eight equivalent Pt(1) atoms to form WPt12 cuboctahedra that share corners with four equivalent W(1)Pt12 cuboctahedra, corners with eight equivalent Pt(2)Pt8W4 cuboctahedra, edges with eight equivalent W(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(1)Pt8W4 cuboctahedra, faces with four equivalent W(1)Pt12 cuboctahedra, faces with six equivalent Pt(2)Pt8W4 cuboctahedra, and faces with eight equivalent Pt(1)Pt8W4 cuboctahedra. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent W(1), four equivalent Pt(1), and four equivalent Pt(2) atoms to form PtPt8W4 cuboctahedra that share corners with twelve equivalent Pt(1)Pt8W4 cuboctahedra, edges with eight equivalent W(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Pt8W4 cuboctahedra, edges with eight equivalent Pt(2)Pt8W4 cuboctahedra, faces with four equivalent W(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Pt8W4 cuboctahedra, and faces with ten equivalent Pt(1)Pt8W4 cuboctahedra. In the second Pt site, Pt(2) is bonded to four equivalent W(1) and eight equivalent Pt(1) atoms to form PtPt8W4 cuboctahedra that share corners with four equivalent Pt(2)Pt8W4 cuboctahedra, corners with eight equivalent W(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Pt8W4 cuboctahedra, edges with sixteen equivalent Pt(1)Pt8W4 cuboctahedra, faces with four equivalent Pt(2)Pt8W4 cuboctahedra, faces with six equivalent W(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(1)Pt8W4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pt3W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.872
_cell_length_b   4.872
_cell_length_c   4.872
_cell_angle_alpha   132.866
_cell_angle_beta   132.866
_cell_angle_gamma   68.865
_symmetry_Int_Tables_number   1
_cell_volume   60.988
_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
  Pt  Pt0  1  0.750  0.250  0.500  1.0
  Pt  Pt1  1  0.250  0.750  0.500  1.0
  Pt  Pt2  1  0.500  0.500  0.000  1.0
  W  W3  1  0.000  0.000  0.000  1.0
[/CIF]
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The structure described by Pt3W is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. W(1) is bonded to four equivalent Pt(2) and eight equivalent Pt(1) atoms to form WPt12 cuboctahedra that share corners with four equivalent W(1)Pt12 cuboctahedra, corners with eight equivalent Pt(2)Pt8W4 cuboctahedra, edges with eight equivalent W(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(1)Pt8W4 cuboctahedra, faces with four equivalent W(1)Pt12 cuboctahedra, faces with six equivalent Pt(2)Pt8W4 cuboctahedra, and faces with eight equivalent Pt(1)Pt8W4 cuboctahedra. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent W(1), four equivalent Pt(1), and four equivalent Pt(2) atoms to form PtPt8W4 cuboctahedra that share corners with twelve equivalent Pt(1)Pt8W4 cuboctahedra, edges with eight equivalent W(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Pt8W4 cuboctahedra, edges with eight equivalent Pt(2)Pt8W4 cuboctahedra, faces with four equivalent W(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Pt8W4 cuboctahedra, and faces with ten equivalent Pt(1)Pt8W4 cuboctahedra. In the second Pt site, Pt(2) is bonded to four equivalent W(1) and eight equivalent Pt(1) atoms to form PtPt8W4 cuboctahedra that share corners with four equivalent Pt(2)Pt8W4 cuboctahedra, corners with eight equivalent W(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Pt8W4 cuboctahedra, edges with sixteen equivalent Pt(1)Pt8W4 cuboctahedra, faces with four equivalent Pt(2)Pt8W4 cuboctahedra, faces with six equivalent W(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(1)Pt8W4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pt3W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.872
_cell_length_b   4.872
_cell_length_c   4.872
_cell_angle_alpha   132.866
_cell_angle_beta   132.866
_cell_angle_gamma   68.865
_symmetry_Int_Tables_number   1
_cell_volume   60.988
_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
  Pt  Pt0  1  0.750  0.250  0.500  1.0
  Pt  Pt1  1  0.250  0.750  0.500  1.0
  Pt  Pt2  1  0.500  0.500  0.000  1.0
  W  W3  1  0.000  0.000  0.000  1.0
[/CIF]
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