The crystal structure described by YFe3 crystallizes in the trigonal R-3m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 12-coordinate geometry to three equivalent Fe(3) and nine equivalent Fe(1) atoms. In the second Y site, Y(2) is bonded in a 18-coordinate geometry to six equivalent Fe(2) and twelve equivalent Fe(1) atoms. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Y(2), three equivalent Y(1), one Fe(3), two equivalent Fe(2), and four equivalent Fe(1) atoms to form FeY5Fe7 cuboctahedra that share corners with two equivalent Fe(3)Y6Fe6 cuboctahedra, corners with fifteen equivalent Fe(1)Y5Fe7 cuboctahedra, edges with eight equivalent Fe(1)Y5Fe7 cuboctahedra, faces with three equivalent Fe(3)Y6Fe6 cuboctahedra, and faces with eleven equivalent Fe(1)Y5Fe7 cuboctahedra. In the second Fe site, Fe(2) is bonded in a 9-coordinate geometry to three equivalent Y(2) and six equivalent Fe(1) atoms. In the third Fe site, Fe(3) is bonded to six equivalent Y(1) and six equivalent Fe(1) atoms to form FeY6Fe6 cuboctahedra that share corners with twelve equivalent Fe(1)Y5Fe7 cuboctahedra, edges with six equivalent Fe(3)Y6Fe6 cuboctahedra, and faces with eighteen equivalent Fe(1)Y5Fe7 cuboctahedra. is represented by the CIF file [CIF]
data_YFe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.147
_cell_length_b   5.147
_cell_length_c   8.633
_cell_angle_alpha   72.656
_cell_angle_beta   72.656
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   185.945
_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
  Y  Y0  1  0.142  0.142  0.574  1.0
  Y  Y1  1  0.858  0.858  0.426  1.0
  Y  Y2  1  0.000  0.000  0.000  1.0
  Fe  Fe3  1  0.082  0.580  0.757  1.0
  Fe  Fe4  1  0.580  0.580  0.757  1.0
  Fe  Fe5  1  0.580  0.082  0.757  1.0
  Fe  Fe6  1  0.918  0.420  0.243  1.0
  Fe  Fe7  1  0.420  0.420  0.243  1.0
  Fe  Fe8  1  0.420  0.918  0.243  1.0
  Fe  Fe9  1  0.333  0.333  0.002  1.0
  Fe  Fe10  1  0.667  0.667  0.998  1.0
  Fe  Fe11  1  0.500  0.500  0.500  1.0
[/CIF]
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The crystal structure described by YFe3 crystallizes in the trigonal R-3m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 12-coordinate geometry to three equivalent Fe(3) and nine equivalent Fe(1) atoms. In the second Y site, Y(2) is bonded in a 18-coordinate geometry to six equivalent Fe(2) and twelve equivalent Fe(1) atoms. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Y(2), three equivalent Y(1), one Fe(3), two equivalent Fe(2), and four equivalent Fe(1) atoms to form FeY5Fe7 cuboctahedra that share corners with two equivalent Fe(3)Y6Fe6 cuboctahedra, corners with fifteen equivalent Fe(1)Y5Fe7 cuboctahedra, edges with eight equivalent Fe(1)Y5Fe7 cuboctahedra, faces with three equivalent Fe(3)Y6Fe6 cuboctahedra, and faces with eleven equivalent Fe(1)Y5Fe7 cuboctahedra. In the second Fe site, Fe(2) is bonded in a 9-coordinate geometry to three equivalent Y(2) and six equivalent Fe(1) atoms. In the third Fe site, Fe(3) is bonded to six equivalent Y(1) and six equivalent Fe(1) atoms to form FeY6Fe6 cuboctahedra that share corners with twelve equivalent Fe(1)Y5Fe7 cuboctahedra, edges with six equivalent Fe(3)Y6Fe6 cuboctahedra, and faces with eighteen equivalent Fe(1)Y5Fe7 cuboctahedra. is represented by the CIF file [CIF]
data_YFe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.147
_cell_length_b   5.147
_cell_length_c   8.633
_cell_angle_alpha   72.656
_cell_angle_beta   72.656
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   185.945
_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
  Y  Y0  1  0.142  0.142  0.574  1.0
  Y  Y1  1  0.858  0.858  0.426  1.0
  Y  Y2  1  0.000  0.000  0.000  1.0
  Fe  Fe3  1  0.082  0.580  0.757  1.0
  Fe  Fe4  1  0.580  0.580  0.757  1.0
  Fe  Fe5  1  0.580  0.082  0.757  1.0
  Fe  Fe6  1  0.918  0.420  0.243  1.0
  Fe  Fe7  1  0.420  0.420  0.243  1.0
  Fe  Fe8  1  0.420  0.918  0.243  1.0
  Fe  Fe9  1  0.333  0.333  0.002  1.0
  Fe  Fe10  1  0.667  0.667  0.998  1.0
  Fe  Fe11  1  0.500  0.500  0.500  1.0
[/CIF]
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