data_La2WSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.66
_cell_length_b   5.11
_cell_length_c   5.36
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2WSe
_chemical_formula_sum   'La2 W1 Se1'
_cell_volume   100.13
_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  La0  1  0.83  0.55  0.0  1.0
  La  La1  1  0.83  0.0  0.68  1.0
  W  W3  1  0.0  0.55  0.68  1.0
  Se  Se2  1  0.0  0.0  0.0  1.0

data_La2WSe
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.66
_cell_length_b   5.11
_cell_length_c   5.36
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2WSe
_chemical_formula_sum   'La2 W1 Se1'
_cell_volume   100.13
_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  La0  1  0.83  0.0  0.68  1.0
  La  La1  1  0.83  0.55  0.0  1.0
  W  W2  1  0.0  0.55  0.68  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

La La W Se
La La W Se 0 2 + o - 1 3 + o + 
WLaLaSe crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one lanthanum;tungsten molecule and one LaSe cluster. In the LaSe cluster, La(2) is bonded in a 1-coordinate geometry to one Se(1) atom. The La(2)-Se(1) bond length is 1.83 Å. Se(1) is bonded in a 1-coordinate geometry to one La(2) atom.