The structure described by U2Fe3Al crystallizes in the trigonal R-3m space group. U(1) is bonded in a 16-coordinate geometry to four equivalent U(1), nine equivalent Fe(1), and three equivalent Al(1) atoms. Fe(1) is bonded to six equivalent U(1), four equivalent Fe(1), and two equivalent Al(1) atoms to form a mixture of distorted face, corner, and edge-sharing FeU6Al2Fe4 cuboctahedra. Al(1) is bonded in a 6-coordinate geometry to six equivalent U(1) and six equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2AlFe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.242
_cell_length_b   5.242
_cell_length_c   4.773
_cell_angle_alpha   90.000
_cell_angle_beta   56.694
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   87.819
_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
  U  U0  1  0.504  0.752  0.745  1.0
  U  U1  1  0.996  0.998  0.005  1.0
  Al  Al2  1  0.750  0.375  0.875  1.0
  Fe  Fe3  1  0.250  0.375  0.375  1.0
  Fe  Fe4  1  0.250  0.875  0.375  1.0
  Fe  Fe5  1  0.750  0.375  0.375  1.0
[/CIF]
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The structure described by U2Fe3Al crystallizes in the trigonal R-3m space group. U(1) is bonded in a 16-coordinate geometry to four equivalent U(1), nine equivalent Fe(1), and three equivalent Al(1) atoms. Fe(1) is bonded to six equivalent U(1), four equivalent Fe(1), and two equivalent Al(1) atoms to form a mixture of distorted face, corner, and edge-sharing FeU6Al2Fe4 cuboctahedra. Al(1) is bonded in a 6-coordinate geometry to six equivalent U(1) and six equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_U2AlFe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.242
_cell_length_b   5.242
_cell_length_c   4.773
_cell_angle_alpha   90.000
_cell_angle_beta   56.694
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   87.819
_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
  U  U0  1  0.504  0.752  0.745  1.0
  U  U1  1  0.996  0.998  0.005  1.0
  Al  Al2  1  0.750  0.375  0.875  1.0
  Fe  Fe3  1  0.250  0.375  0.375  1.0
  Fe  Fe4  1  0.250  0.875  0.375  1.0
  Fe  Fe5  1  0.750  0.375  0.375  1.0
[/CIF]
.