The structure described by YFe4Si2 crystallizes in the tetragonal P4_2/mnm space group. Y(1) is bonded in a 18-coordinate geometry to twelve equivalent Fe(1) and six equivalent Si(1) atoms. Fe(1) is bonded in a 12-coordinate geometry to three equivalent Y(1), six equivalent Fe(1), and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Y(1) and six equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_Y(Fe2Si)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.085
_cell_length_b   7.085
_cell_length_c   3.760
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   188.720
_cell_formula_units_Z   2
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  0.500  0.500  0.000  1.0
  Y  Y1  1  0.000  0.000  0.500  1.0
  Fe  Fe2  1  0.586  0.146  0.500  1.0
  Fe  Fe3  1  0.414  0.854  0.500  1.0
  Fe  Fe4  1  0.086  0.354  0.000  1.0
  Fe  Fe5  1  0.914  0.646  0.000  1.0
  Fe  Fe6  1  0.146  0.586  0.500  1.0
  Fe  Fe7  1  0.854  0.414  0.500  1.0
  Fe  Fe8  1  0.354  0.086  0.000  1.0
  Fe  Fe9  1  0.646  0.914  0.000  1.0
  Si  Si10  1  0.719  0.719  0.500  1.0
  Si  Si11  1  0.281  0.281  0.500  1.0
  Si  Si12  1  0.219  0.781  0.000  1.0
  Si  Si13  1  0.781  0.219  0.000  1.0
[/CIF]
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The structure described by YFe4Si2 crystallizes in the tetragonal P4_2/mnm space group. Y(1) is bonded in a 18-coordinate geometry to twelve equivalent Fe(1) and six equivalent Si(1) atoms. Fe(1) is bonded in a 12-coordinate geometry to three equivalent Y(1), six equivalent Fe(1), and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Y(1) and six equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_Y(Fe2Si)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.085
_cell_length_b   7.085
_cell_length_c   3.760
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   188.720
_cell_formula_units_Z   2
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  0.500  0.500  0.000  1.0
  Y  Y1  1  0.000  0.000  0.500  1.0
  Fe  Fe2  1  0.586  0.146  0.500  1.0
  Fe  Fe3  1  0.414  0.854  0.500  1.0
  Fe  Fe4  1  0.086  0.354  0.000  1.0
  Fe  Fe5  1  0.914  0.646  0.000  1.0
  Fe  Fe6  1  0.146  0.586  0.500  1.0
  Fe  Fe7  1  0.854  0.414  0.500  1.0
  Fe  Fe8  1  0.354  0.086  0.000  1.0
  Fe  Fe9  1  0.646  0.914  0.000  1.0
  Si  Si10  1  0.719  0.719  0.500  1.0
  Si  Si11  1  0.281  0.281  0.500  1.0
  Si  Si12  1  0.219  0.781  0.000  1.0
  Si  Si13  1  0.781  0.219  0.000  1.0
[/CIF]
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