data_KSnBr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.57
_cell_length_b   4.57
_cell_length_c   6.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.82
_symmetry_Int_Tables_number   1
_chemical_formula_structural   KSnBr2
_chemical_formula_sum   'K1 Sn1 Br2'
_cell_volume   138.97
_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
  K  K2  1  0.0  0.0  0.09  1.0
  Sn  Sn3  1  0.18  0.0  0.81  1.0
  Br  Br0  1  0.0  0.0  0.78  1.0
  Br  Br1  1  0.18  0.0  0.31  1.0

data_KSnBr2
_symmetry_space_group_name_H-M   Pm
_cell_length_a   4.57
_cell_length_b   4.57
_cell_length_c   6.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   KSnBr2
_chemical_formula_sum   'K1 Sn1 Br2'
_cell_volume   139.04
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  K  K0  1  0.0  0.0  0.09  1.0
  Sn  Sn1  1  0.18  0.0  0.81  1.0
  Br  Br2  1  0.0  0.0  0.78  1.0
  Br  Br3  1  0.18  0.0  0.31  1.0

K Sn Br Br
KSnBr2 crystallizes in the monoclinic Pm space group. The structure is zero-dimensional and consists of one KSnBr2 cluster. K(1) is bonded in a 3-coordinate geometry to one Sn(1), one Br(1), and one Br(2) atom. The K(1)-Sn(1) bond length is 2.08 Å. The K(1)-Br(1) bond length is 2.09 Å. The K(1)-Br(2) bond length is 1.64 Å. Sn(1) is bonded in a single-bond geometry to one K(1) and one Br(1) atom. The Sn(1)-Br(1) bond length is 0.84 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted single-bond geometry to one K(1) and one Sn(1) atom. In the second Br site, Br(2) is bonded in a single-bond geometry to one K(1) atom.