The compound described by Fe2CoSi is Tungsten-derived structured and crystallizes in the cubic F-43m space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 14-coordinate geometry to four equivalent Fe(2), four equivalent Co(1), and six equivalent Si(1) atoms. In the second Fe site, Fe(2) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Si(1) atoms. Co(1) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Si(1) atoms. Si(1) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(2), six equivalent Fe(1), and four equivalent Co(1) atoms. is represented by the CIF card [CIF]
data_Fe2CoSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.931
_cell_length_b   3.931
_cell_length_c   3.931
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   42.952
_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
  Fe  Fe0  1  0.750  0.750  0.750  1.0
  Fe  Fe1  1  0.500  0.500  0.500  1.0
  Co  Co2  1  0.000  0.000  0.000  1.0
  Si  Si3  1  0.250  0.250  0.250  1.0
[/CIF]
.
The compound described by Fe2CoSi is Tungsten-derived structured and crystallizes in the cubic F-43m space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 14-coordinate geometry to four equivalent Fe(2), four equivalent Co(1), and six equivalent Si(1) atoms. In the second Fe site, Fe(2) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Si(1) atoms. Co(1) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Si(1) atoms. Si(1) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(2), six equivalent Fe(1), and four equivalent Co(1) atoms. is represented by the CIF card [CIF]
data_Fe2CoSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.931
_cell_length_b   3.931
_cell_length_c   3.931
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   42.952
_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
  Fe  Fe0  1  0.750  0.750  0.750  1.0
  Fe  Fe1  1  0.500  0.500  0.500  1.0
  Co  Co2  1  0.000  0.000  0.000  1.0
  Si  Si3  1  0.250  0.250  0.250  1.0
[/CIF]
.