data_YBeSb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.05
_cell_length_b   4.05
_cell_length_c   6.12
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   YBeSb2
_chemical_formula_sum   'Y1 Be1 Sb2'
_cell_volume   100.42
_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
  Y  Y3  1  0.02  0.02  0.86  1.0
  Be  Be0  1  0.0  0.0  0.65  1.0
  Sb  Sb1  1  0.02  0.02  0.79  1.0
  Sb  Sb2  1  0.0  0.0  0.01  1.0

data_YBeSb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.73
_cell_length_b   5.73
_cell_length_c   6.12
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   YBeSb2
_chemical_formula_sum   'Y2 Be2 Sb4'
_cell_volume   200.85
_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
  Y  Y0  2  0.02  0.0  0.86  1.0
  Be  Be1  2  0.0  0.0  0.65  1.0
  Sb  Sb2  2  0.0  0.0  0.01  1.0
  Sb  Sb3  2  0.02  0.0  0.79  1.0

Y Be Sb Sb
Y Be Sb Sb 0 2 o o o 0 3 o o + 1 2 o o o 
BeYSb2 is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeYSb2 clusters. Be(1) is bonded in a single-bond geometry to one Sb(1) atom. The Be(1)-Sb(1) bond length is 0.88 Å. Y(1) is bonded in a linear geometry to one Sb(1) and one Sb(2) atom. The Y(1)-Sb(1) bond length is 0.41 Å. The Y(1)-Sb(2) bond length is 0.93 Å. There are two inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a linear geometry to one Be(1) and one Y(1) atom. In the second Sb site, Sb(2) is bonded in a single-bond geometry to one Y(1) atom.