data_FeSnBr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.56
_cell_length_b   9.56
_cell_length_c   9.56
_cell_angle_alpha   21.38
_cell_angle_beta   21.38
_cell_angle_gamma   21.38
_symmetry_Int_Tables_number   1
_chemical_formula_structural   FeSnBr2
_chemical_formula_sum   'Fe1 Sn1 Br2'
_cell_volume   101.71
_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  Fe2  1  0.0  0.0  0.0  1.0
  Sn  Sn3  1  0.0  0.0  0.01  1.0
  Br  Br0  1  0.0  0.0  0.29  1.0
  Br  Br1  1  0.0  0.0  0.72  1.0

data_FeSnBr2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.14
_cell_length_b   3.55
_cell_length_c   9.56
_cell_angle_alpha   90.0
_cell_angle_beta   102.37
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   FeSnBr2
_chemical_formula_sum   'Fe2 Sn2 Br4'
_cell_volume   203.42
_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
  Sn  Sn1  2  0.0  0.0  0.99  1.0
  Br  Br2  2  0.0  0.0  0.28  1.0
  Br  Br3  2  0.0  0.0  0.71  1.0

Fe Sn Br Br
FeSnBr2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two FeSnBr2 clusters. Fe(1) is bonded in a distorted single-bond geometry to one Sn(1) and one Br(2) atom. The Fe(1)-Sn(1) bond length is 0.06 Å. The Fe(1)-Br(2) bond length is 2.63 Å. Sn(1) is bonded in a single-bond geometry to one Fe(1) and one Br(1) atom. The Sn(1)-Br(1) bond length is 2.69 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a single-bond geometry to one Sn(1) atom. In the second Br site, Br(2) is bonded in a single-bond geometry to one Fe(1) atom.