The material described by FePt6Ni is Uranium Silicide-derived structured and crystallizes in the tetragonal P4/mmm space group. Fe(1) is bonded to four equivalent Pt(1) and eight equivalent Pt(3) atoms to form FePt12 cuboctahedra that share corners with four equivalent Fe(1)Pt12 cuboctahedra, corners with eight equivalent Ni(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Ni4Pt8 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Ni(1)Pt12 cuboctahedra, faces with four equivalent Fe(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Fe4Pt8 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Fe(1) and eight equivalent Pt(3) atoms to form distorted PtFe4Pt8 cuboctahedra that share corners with four equivalent Pt(1)Fe4Pt8 cuboctahedra, corners with eight equivalent Pt(2)Ni4Pt8 cuboctahedra, edges with eight equivalent Ni(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with four equivalent Fe(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Fe4Pt8 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. In the second Pt site, Pt(2) is bonded to eight equivalent Pt(3) and four equivalent Ni(1) atoms to form PtNi4Pt8 cuboctahedra that share corners with four equivalent Pt(2)Ni4Pt8 cuboctahedra, corners with eight equivalent Pt(1)Fe4Pt8 cuboctahedra, edges with eight equivalent Fe(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Pt(1)Fe4Pt8 cuboctahedra, faces with four equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with four equivalent Ni(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. In the third Pt site, Pt(3) is bonded to two equivalent Fe(1), two equivalent Pt(1), two equivalent Pt(2), four equivalent Pt(3), and two equivalent Ni(1) atoms to form distorted PtFe2Ni2Pt8 cuboctahedra that share corners with twelve equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, edges with four equivalent Fe(1)Pt12 cuboctahedra, edges with four equivalent Pt(1)Fe4Pt8 cuboctahedra, edges with four equivalent Pt(2)Ni4Pt8 cuboctahedra, edges with four equivalent Ni(1)Pt12 cuboctahedra, edges with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Fe(1)Pt12 cuboctahedra, faces with two equivalent Pt(1)Fe4Pt8 cuboctahedra, faces with two equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with two equivalent Ni(1)Pt12 cuboctahedra, and faces with ten equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. Ni(1) is bonded to four equivalent Pt(2) and eight equivalent Pt(3) atoms to form NiPt12 cuboctahedra that share corners with four equivalent Ni(1)Pt12 cuboctahedra, corners with eight equivalent Fe(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Fe4Pt8 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Fe(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with four equivalent Ni(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. is represented by the CIF card [CIF]
data_FeNiPt6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.878
_cell_length_b   3.878
_cell_length_c   7.714
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   115.991
_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
  Fe  Fe0  1  0.000  0.000  0.000  1.0
  Ni  Ni1  1  0.000  0.000  0.500  1.0
  Pt  Pt2  1  0.500  0.500  0.000  1.0
  Pt  Pt3  1  0.500  0.500  0.500  1.0
  Pt  Pt4  1  0.500  0.000  0.249  1.0
  Pt  Pt5  1  0.500  0.000  0.751  1.0
  Pt  Pt6  1  0.000  0.500  0.249  1.0
  Pt  Pt7  1  0.000  0.500  0.751  1.0
[/CIF]
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The material described by FePt6Ni is Uranium Silicide-derived structured and crystallizes in the tetragonal P4/mmm space group. Fe(1) is bonded to four equivalent Pt(1) and eight equivalent Pt(3) atoms to form FePt12 cuboctahedra that share corners with four equivalent Fe(1)Pt12 cuboctahedra, corners with eight equivalent Ni(1)Pt12 cuboctahedra, edges with eight equivalent Pt(2)Ni4Pt8 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Ni(1)Pt12 cuboctahedra, faces with four equivalent Fe(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Fe4Pt8 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded to four equivalent Fe(1) and eight equivalent Pt(3) atoms to form distorted PtFe4Pt8 cuboctahedra that share corners with four equivalent Pt(1)Fe4Pt8 cuboctahedra, corners with eight equivalent Pt(2)Ni4Pt8 cuboctahedra, edges with eight equivalent Ni(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with four equivalent Fe(1)Pt12 cuboctahedra, faces with four equivalent Pt(1)Fe4Pt8 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. In the second Pt site, Pt(2) is bonded to eight equivalent Pt(3) and four equivalent Ni(1) atoms to form PtNi4Pt8 cuboctahedra that share corners with four equivalent Pt(2)Ni4Pt8 cuboctahedra, corners with eight equivalent Pt(1)Fe4Pt8 cuboctahedra, edges with eight equivalent Fe(1)Pt12 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Pt(1)Fe4Pt8 cuboctahedra, faces with four equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with four equivalent Ni(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. In the third Pt site, Pt(3) is bonded to two equivalent Fe(1), two equivalent Pt(1), two equivalent Pt(2), four equivalent Pt(3), and two equivalent Ni(1) atoms to form distorted PtFe2Ni2Pt8 cuboctahedra that share corners with twelve equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, edges with four equivalent Fe(1)Pt12 cuboctahedra, edges with four equivalent Pt(1)Fe4Pt8 cuboctahedra, edges with four equivalent Pt(2)Ni4Pt8 cuboctahedra, edges with four equivalent Ni(1)Pt12 cuboctahedra, edges with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Fe(1)Pt12 cuboctahedra, faces with two equivalent Pt(1)Fe4Pt8 cuboctahedra, faces with two equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with two equivalent Ni(1)Pt12 cuboctahedra, and faces with ten equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. Ni(1) is bonded to four equivalent Pt(2) and eight equivalent Pt(3) atoms to form NiPt12 cuboctahedra that share corners with four equivalent Ni(1)Pt12 cuboctahedra, corners with eight equivalent Fe(1)Pt12 cuboctahedra, edges with eight equivalent Pt(1)Fe4Pt8 cuboctahedra, edges with sixteen equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra, faces with two equivalent Fe(1)Pt12 cuboctahedra, faces with four equivalent Pt(2)Ni4Pt8 cuboctahedra, faces with four equivalent Ni(1)Pt12 cuboctahedra, and faces with eight equivalent Pt(3)Fe2Ni2Pt8 cuboctahedra. is represented by the CIF card [CIF]
data_FeNiPt6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.878
_cell_length_b   3.878
_cell_length_c   7.714
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   115.991
_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
  Fe  Fe0  1  0.000  0.000  0.000  1.0
  Ni  Ni1  1  0.000  0.000  0.500  1.0
  Pt  Pt2  1  0.500  0.500  0.000  1.0
  Pt  Pt3  1  0.500  0.500  0.500  1.0
  Pt  Pt4  1  0.500  0.000  0.249  1.0
  Pt  Pt5  1  0.500  0.000  0.751  1.0
  Pt  Pt6  1  0.000  0.500  0.249  1.0
  Pt  Pt7  1  0.000  0.500  0.751  1.0
[/CIF]
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