data_Be2SnSb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.48
_cell_length_b   4.48
_cell_length_c   3.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2SnSb
_chemical_formula_sum   'Be2 Sn1 Sb1'
_cell_volume   73.6
_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
  Be  Be0  1  0.0  0.24  0.83  1.0
  Be  Be1  1  0.24  0.0  0.83  1.0
  Sn  Sn3  1  0.0  0.0  0.0  1.0
  Sb  Sb2  1  0.24  0.24  0.0  1.0

data_Be2SnSb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.34
_cell_length_b   6.34
_cell_length_c   3.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2SnSb
_chemical_formula_sum   'Be4 Sn2 Sb2'
_cell_volume   147.2
_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
  Be  Be0  4  0.12  0.12  0.83  1.0
  Sn  Sn1  2  0.0  0.0  0.0  1.0
  Sb  Sb2  2  0.24  0.0  -0.0  1.0

Be Be Sn Sb
Be Be Sn Sb 0 2 o o + 0 3 o o + 1 2 o o + 1 3 o o + 
Be2SnSb is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Be2SnSb clusters. Be(1) is bonded in a 2-coordinate geometry to one Sn(1) and one Sb(1) atom. The Be(1)-Sn(1) bond length is 1.25 Å. The Be(1)-Sb(1) bond length is 1.25 Å. Sn(1) is bonded in a 2-coordinate geometry to two equivalent Be(1) atoms. Sb(1) is bonded in a 2-coordinate geometry to two equivalent Be(1) atoms.