The compound described by Hf(FeSi)2 crystallizes in the orthorhombic Pbcm space group. Hf(1) is bonded in a 16-coordinate geometry to four equivalent Fe(1), four equivalent Fe(2), four equivalent Si(1), and four equivalent Si(2) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 9-coordinate geometry to four equivalent Hf(1), one Si(1), and four equivalent Si(2) atoms. In the second Fe site, Fe(2) is bonded in a 9-coordinate geometry to four equivalent Hf(1), two equivalent Fe(2), one Si(2), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Hf(1), one Fe(1), and four equivalent Fe(2) atoms. In the second Si site, Si(2) is bonded in a 11-coordinate geometry to four equivalent Hf(1), one Fe(2), four equivalent Fe(1), and two equivalent Si(2) atoms. is represented by the CIF file [CIF]
data_Hf(FeSi)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.024
_cell_length_b   7.027
_cell_length_c   7.430
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   262.290
_cell_formula_units_Z   4
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
  Hf  Hf0  1  0.750  0.907  0.249  1.0
  Hf  Hf1  1  0.250  0.093  0.751  1.0
  Hf  Hf2  1  0.750  0.407  0.751  1.0
  Hf  Hf3  1  0.250  0.593  0.249  1.0
  Fe  Fe4  1  0.750  0.517  0.108  1.0
  Fe  Fe5  1  0.250  0.483  0.892  1.0
  Fe  Fe6  1  0.750  0.017  0.892  1.0
  Fe  Fe7  1  0.250  0.983  0.108  1.0
  Fe  Fe8  1  0.000  0.750  0.610  1.0
  Fe  Fe9  1  0.500  0.250  0.390  1.0
  Fe  Fe10  1  0.000  0.250  0.390  1.0
  Fe  Fe11  1  0.500  0.750  0.610  1.0
  Si  Si12  1  0.750  0.549  0.414  1.0
  Si  Si13  1  0.250  0.451  0.586  1.0
  Si  Si14  1  0.750  0.049  0.586  1.0
  Si  Si15  1  0.250  0.951  0.414  1.0
  Si  Si16  1  0.000  0.750  0.944  1.0
  Si  Si17  1  0.500  0.250  0.056  1.0
  Si  Si18  1  0.000  0.250  0.056  1.0
  Si  Si19  1  0.500  0.750  0.944  1.0
[/CIF]
.
The compound described by Hf(FeSi)2 crystallizes in the orthorhombic Pbcm space group. Hf(1) is bonded in a 16-coordinate geometry to four equivalent Fe(1), four equivalent Fe(2), four equivalent Si(1), and four equivalent Si(2) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 9-coordinate geometry to four equivalent Hf(1), one Si(1), and four equivalent Si(2) atoms. In the second Fe site, Fe(2) is bonded in a 9-coordinate geometry to four equivalent Hf(1), two equivalent Fe(2), one Si(2), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent Hf(1), one Fe(1), and four equivalent Fe(2) atoms. In the second Si site, Si(2) is bonded in a 11-coordinate geometry to four equivalent Hf(1), one Fe(2), four equivalent Fe(1), and two equivalent Si(2) atoms. is represented by the CIF file [CIF]
data_Hf(FeSi)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.024
_cell_length_b   7.027
_cell_length_c   7.430
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   262.290
_cell_formula_units_Z   4
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
  Hf  Hf0  1  0.750  0.907  0.249  1.0
  Hf  Hf1  1  0.250  0.093  0.751  1.0
  Hf  Hf2  1  0.750  0.407  0.751  1.0
  Hf  Hf3  1  0.250  0.593  0.249  1.0
  Fe  Fe4  1  0.750  0.517  0.108  1.0
  Fe  Fe5  1  0.250  0.483  0.892  1.0
  Fe  Fe6  1  0.750  0.017  0.892  1.0
  Fe  Fe7  1  0.250  0.983  0.108  1.0
  Fe  Fe8  1  0.000  0.750  0.610  1.0
  Fe  Fe9  1  0.500  0.250  0.390  1.0
  Fe  Fe10  1  0.000  0.250  0.390  1.0
  Fe  Fe11  1  0.500  0.750  0.610  1.0
  Si  Si12  1  0.750  0.549  0.414  1.0
  Si  Si13  1  0.250  0.451  0.586  1.0
  Si  Si14  1  0.750  0.049  0.586  1.0
  Si  Si15  1  0.250  0.951  0.414  1.0
  Si  Si16  1  0.000  0.750  0.944  1.0
  Si  Si17  1  0.500  0.250  0.056  1.0
  Si  Si18  1  0.000  0.250  0.056  1.0
  Si  Si19  1  0.500  0.750  0.944  1.0
[/CIF]
.