data_FeSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.13
_cell_length_b   3.13
_cell_length_c   3.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeSb
_chemical_formula_sum   'Fe1 Sb1'
_cell_volume   31.56
_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  0.0  0.0  0.0  1.0
  Sb  Sb1  1  0.56  0.56  0.62  1.0

data_FeSb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.42
_cell_length_b   4.42
_cell_length_c   3.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   FeSb
_chemical_formula_sum   'Fe2 Sb2'
_cell_volume   63.12
_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
  Fe  Fe0  2  0.0  0.0  0.0  1.0
  Sb  Sb1  2  0.06  0.5  0.62  1.0

Fe Sb
Fe Sb 0 1 - - - 0 1 - - o 0 1 - o - 0 1 - o o 0 1 o - - 0 1 o - o 0 1 o o - 0 0 + o o 0 0 o + o 1 1 + o o 1 1 o + o 
FeSb is Tetraauricupride structured and crystallizes in the monoclinic Cm space group. Fe(1) is bonded in a 8-coordinate geometry to eight equivalent Sb(1) atoms. There are a spread of Fe(1)-Sb(1) bond distances ranging from 2.30-3.18 Å. Sb(1) is bonded in a 8-coordinate geometry to eight equivalent Fe(1) atoms.