data_FeSiSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.09
_cell_length_b   6.09
_cell_length_c   6.09
_cell_angle_alpha   152.24
_cell_angle_beta   152.24
_cell_angle_gamma   39.66
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeSiSn
_chemical_formula_sum   'Fe1 Si1 Sn1'
_cell_volume   48.79
_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  0.18  1.0
  Si  Si1  1  0.0  0.0  0.33  1.0
  Sn  Sn2  1  0.0  0.0  0.39  1.0

data_FeSiSn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.13
_cell_length_b   4.13
_cell_length_c   6.09
_cell_angle_alpha   90.0
_cell_angle_beta   109.83
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   FeSiSn
_chemical_formula_sum   'Fe2 Si2 Sn2'
_cell_volume   97.59
_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  0.82  1.0
  Si  Si1  2  0.0  0.0  0.67  1.0
  Sn  Sn2  2  0.0  0.0  0.61  1.0

Fe Si Sn
FeSnSi is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two FeSnSi clusters. Fe(1) is bonded in a single-bond geometry to one Si(1) atom. The Fe(1)-Si(1) bond length is 0.91 Å. Sn(1) is bonded in a single-bond geometry to one Si(1) atom. The Sn(1)-Si(1) bond length is 0.41 Å. Si(1) is bonded in a linear geometry to one Fe(1) and one Sn(1) atom.