The structure described by FeSi(CrSi) crystallizes in the monoclinic P2_1 space group. Cr(1) is bonded in a 7-coordinate geometry to three equivalent Si(1) and four equivalent Si(2) atoms. Fe(1) is bonded in a 7-coordinate geometry to three equivalent 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 7-coordinate geometry to three equivalent Cr(1) and four equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 7-coordinate geometry to four equivalent Cr(1) and three equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrFeSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.500
_cell_length_b   4.533
_cell_length_c   4.542
_cell_angle_alpha   89.122
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   92.644
_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
  Cr  Cr0  1  0.637  0.630  0.894  1.0
  Cr  Cr1  1  0.137  0.370  0.106  1.0
  Fe  Fe2  1  0.362  0.859  0.386  1.0
  Fe  Fe3  1  0.862  0.141  0.614  1.0
  Si  Si4  1  0.346  0.336  0.591  1.0
  Si  Si5  1  0.846  0.664  0.409  1.0
  Si  Si6  1  0.655  0.145  0.098  1.0
  Si  Si7  1  0.155  0.855  0.902  1.0
[/CIF]
.
The structure described by FeSi(CrSi) crystallizes in the monoclinic P2_1 space group. Cr(1) is bonded in a 7-coordinate geometry to three equivalent Si(1) and four equivalent Si(2) atoms. Fe(1) is bonded in a 7-coordinate geometry to three equivalent 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 7-coordinate geometry to three equivalent Cr(1) and four equivalent Fe(1) atoms. In the second Si site, Si(2) is bonded in a 7-coordinate geometry to four equivalent Cr(1) and three equivalent Fe(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CrFeSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.500
_cell_length_b   4.533
_cell_length_c   4.542
_cell_angle_alpha   89.122
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   92.644
_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
  Cr  Cr0  1  0.637  0.630  0.894  1.0
  Cr  Cr1  1  0.137  0.370  0.106  1.0
  Fe  Fe2  1  0.362  0.859  0.386  1.0
  Fe  Fe3  1  0.862  0.141  0.614  1.0
  Si  Si4  1  0.346  0.336  0.591  1.0
  Si  Si5  1  0.846  0.664  0.409  1.0
  Si  Si6  1  0.655  0.145  0.098  1.0
  Si  Si7  1  0.155  0.855  0.902  1.0
[/CIF]
.