data_Sn2SbSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.26
_cell_length_b   5.26
_cell_length_c   5.26
_cell_angle_alpha   109.52
_cell_angle_beta   109.52
_cell_angle_gamma   109.38
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sn2SbSe
_chemical_formula_sum   'Sn2 Sb1 Se1'
_cell_volume   112.33
_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
  Sn  Sn2  1  0.0  0.04  0.0  1.0
  Sn  Sn3  1  0.04  0.0  0.0  1.0
  Sb  Sb0  1  0.0  0.0  0.04  1.0
  Se  Se1  1  0.0  0.0  0.0  1.0

data_Sn2SbSe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.09
_cell_length_b   8.59
_cell_length_c   5.26
_cell_angle_alpha   90.0
_cell_angle_beta   125.31
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sn2SbSe
_chemical_formula_sum   'Sn4 Sb2 Se2'
_cell_volume   224.67
_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
  Sn  Sn0  4  0.02  0.02  0.0  1.0
  Sb  Sb1  2  0.46  0.5  0.96  1.0
  Se  Se2  2  0.0  0.0  0.0  1.0

Sn Sn Sb Se
Sn Sn Sb Se 0 3 o o o 1 3 o o o 2 3 o o o 
Sn2SbSe is Ammonia-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Sn2SbSe clusters. Sn(1) is bonded in a single-bond geometry to one Se(1) atom. The Sn(1)-Se(1) bond length is 0.20 Å. Sb(1) is bonded in a single-bond geometry to one Se(1) atom. The Sb(1)-Se(1) bond length is 0.23 Å. Se(1) is bonded in a trigonal non-coplanar geometry to two equivalent Sn(1) and one Sb(1) atom.