data_FeW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.25
_cell_length_b   12.25
_cell_length_c   12.25
_cell_angle_alpha   162.13
_cell_angle_beta   162.13
_cell_angle_gamma   25.38
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeW2
_chemical_formula_sum   'Fe4 W8'
_cell_volume   173.1
_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
  Fe  Fe0  1  0.0  0.9  0.87  1.0
  Fe  Fe1  1  0.0  0.9  0.08  1.0
  Fe  Fe2  1  0.0  0.0  0.8  1.0
  Fe  Fe3  1  0.0  0.0  0.11  1.0
  W  W4  1  0.9  0.0  0.92  1.0
  W  W5  1  0.9  0.0  0.04  1.0
  W  W6  1  0.0  0.0  0.89  1.0
  W  W7  1  0.0  0.0  0.01  1.0
  W  W8  1  0.9  0.0  0.05  1.0
  W  W9  1  0.9  0.0  0.9  1.0
  W  W10  1  0.0  0.0  0.02  1.0
  W  W11  1  0.0  0.0  0.88  1.0

data_FeW2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.81
_cell_length_b   3.81
_cell_length_c   12.25
_cell_angle_alpha   98.93
_cell_angle_beta   98.93
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeW2
_chemical_formula_sum   'Fe4 W8'
_cell_volume   173.1
_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
  Fe  Fe0  1  0.11  0.11  0.11  1.0
  Fe  Fe1  1  0.18  0.08  0.18  1.0
  Fe  Fe2  1  0.8  0.8  0.8  1.0
  Fe  Fe3  1  0.97  0.87  0.97  1.0
  W  W4  1  0.01  0.01  0.01  1.0
  W  W5  1  0.02  0.02  0.02  1.0
  W  W6  1  0.04  0.13  0.13  1.0
  W  W7  1  0.05  0.15  0.15  1.0
  W  W8  1  0.88  0.88  0.88  1.0
  W  W9  1  0.89  0.89  0.89  1.0
  W  W10  1  0.9  0.0  0.0  1.0
  W  W11  1  0.92  0.01  0.01  1.0

Fe Fe Fe Fe W W W W W W W W
W2Fe is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one W2Fe cluster. There are eight inequivalent W sites. In the first W site, W(1) is bonded in a 3-coordinate geometry to one W(4), one W(6), and one W(7) atom. The W(1)-W(4) bond length is 0.37 Å. The W(1)-W(6) bond length is 0.15 Å. The W(1)-W(7) bond length is 0.41 Å. In the second W site, W(2) is bonded in a distorted single-bond geometry to one W(5) and one Fe(4) atom. The W(2)-W(5) bond length is 0.15 Å. The W(2)-Fe(4) bond length is 0.45 Å. In the third W site, W(3) is bonded in a distorted bent 150 degrees geometry to one W(8) and one Fe(1) atom. The W(3)-W(8) bond length is 0.15 Å. The W(3)-Fe(1) bond length is 0.93 Å. In the fourth W site, W(4) is bonded in a 4-coordinate geometry to one W(1), one W(6), one W(7), and one Fe(1) atom. The W(4)-W(6) bond length is 0.41 Å. The W(4)-W(7) bond length is 0.15 Å. The W(4)-Fe(1) bond length is 0.71 Å. In the fifth W site, W(5) is bonded in a distorted bent 120 degrees geometry to one W(2) and one Fe(2) atom. The W(5)-Fe(2) bond length is 0.67 Å. In the sixth W site, W(6) is bonded in a 3-coordinate geometry to one W(1), one W(4), and one Fe(1) atom. The W(6)-Fe(1) bond length is 0.67 Å. In the seventh W site, W(7) is bonded in a distorted trigonal planar geometry to one W(1), one W(4), and one Fe(4) atom. The W(7)-Fe(4) bond length is 1.00 Å. In the eighth W site, W(8) is bonded in a linear geometry to one W(3) and one Fe(3) atom. The W(8)-Fe(3) bond length is 1.00 Å. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a trigonal planar geometry to one W(3), one W(4), and one W(6) atom. In the second Fe site, Fe(2) is bonded in a single-bond geometry to one W(5) atom. In the third Fe site, Fe(3) is bonded in a single-bond geometry to one W(8) atom. In the fourth Fe site, Fe(4) is bonded in a distorted single-bond geometry to one W(2) and one W(7) atom.