data_LaBe2W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.88
_cell_length_b   2.88
_cell_length_c   7.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaBe2W
_chemical_formula_sum   'La1 Be2 W1'
_cell_volume   63.51
_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  0.0  1.0
  Be  Be0  1  0.44  0.44  0.37  1.0
  Be  Be1  1  0.44  0.44  0.3  1.0
  W  W3  1  0.0  0.0  0.83  1.0

data_LaBe2W
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.07
_cell_length_b   4.07
_cell_length_c   7.66
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LaBe2W
_chemical_formula_sum   'La2 Be4 W2'
_cell_volume   127.02
_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  0.0  1.0
  Be  Be1  2  0.44  0.0  0.3  1.0
  Be  Be2  2  0.44  0.0  0.37  1.0
  W  W3  2  0.0  0.0  0.83  1.0

La Be Be W
La Be Be W 0 3 o o - 1 2 o o o 
(Be)2WLa is beta oxygen-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two lanthanum;tungsten molecules and two Be clusters. In each Be cluster, there are two inequivalent Be sites. In the first Be site, Be(1) is bonded in a single-bond geometry to one Be(2) atom. The Be(1)-Be(2) bond length is 0.52 Å. In the second Be site, Be(2) is bonded in a single-bond geometry to one Be(1) atom.