data_SrFeW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.18
_cell_length_b   3.18
_cell_length_c   7.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrFeW2
_chemical_formula_sum   'Sr1 Fe1 W2'
_cell_volume   78.14
_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
  Sr  Sr1  1  0.59  0.59  0.7  1.0
  Fe  Fe0  1  0.0  0.0  0.25  1.0
  W  W2  1  0.0  0.0  0.58  1.0
  W  W3  1  0.59  0.59  0.06  1.0

data_SrFeW2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.5
_cell_length_b   4.5
_cell_length_c   7.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrFeW2
_chemical_formula_sum   'Sr2 Fe2 W4'
_cell_volume   156.27
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Sr  Sr0  2  0.09  0.5  0.7  1.0
  Fe  Fe1  2  0.0  0.0  0.25  1.0
  W  W2  2  0.0  0.0  0.58  1.0
  W  W3  2  0.09  0.5  0.06  1.0

Sr Fe W W
SrW2Fe crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 5-coordinate geometry to one W(2) and four equivalent W(1) atoms. The Sr(1)-W(2) bond length is 2.76 Å. There are a spread of Sr(1)-W(1) bond distances ranging from 2.09-2.83 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to four equivalent Sr(1) and one Fe(1) atom. The W(1)-Fe(1) bond length is 2.50 Å. In the second W site, W(2) is bonded in a 5-coordinate geometry to one Sr(1) and four equivalent Fe(1) atoms. There are a spread of W(2)-Fe(1) bond distances ranging from 2.37-3.04 Å. Fe(1) is bonded in a 5-coordinate geometry to one W(1) and four equivalent W(2) atoms.