data_LaBe2Sb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.81
_cell_length_b   4.81
_cell_length_c   4.81
_cell_angle_alpha   121.82
_cell_angle_beta   121.82
_cell_angle_gamma   86.88
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaBe2Sb
_chemical_formula_sum   'La1 Be2 Sb1'
_cell_volume   76.28
_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
  La  La2  1  0.0  0.0  0.49  1.0
  Be  Be0  1  0.34  0.0  0.75  1.0
  Be  Be1  1  0.0  0.34  0.75  1.0
  Sb  Sb3  1  0.0  0.0  0.0  1.0

data_LaBe2Sb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.61
_cell_length_b   6.61
_cell_length_c   4.81
_cell_angle_alpha   90.0
_cell_angle_beta   133.44
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LaBe2Sb
_chemical_formula_sum   'La2 Be4 Sb2'
_cell_volume   152.55
_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
  La  La0  2  0.0  0.0  0.49  1.0
  Be  Be1  4  0.33  0.33  0.41  1.0
  Sb  Sb2  2  0.0  0.0  0.0  1.0

La Be Be Sb
La Be Be Sb 0 2 o o o 0 1 o o o 0 3 o o + 0 3 o o o 1 3 + o + 1 3 o o + 2 3 o o + 2 3 o + + 
Be2LaSb crystallizes in the monoclinic Cm space group. Be(1) is bonded in a distorted single-bond geometry to one La(1) and two equivalent Sb(1) atoms. The Be(1)-La(1) bond length is 1.43 Å. There is one shorter (2.49 Å) and one longer (2.74 Å) Be(1)-Sb(1) bond length. La(1) is bonded in a 2-coordinate geometry to two equivalent Be(1) and two equivalent Sb(1) atoms. There is one shorter (2.36 Å) and one longer (2.45 Å) La(1)-Sb(1) bond length. Sb(1) is bonded in a 6-coordinate geometry to four equivalent Be(1) and two equivalent La(1) atoms.