data_La2ZrBe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.54
_cell_length_b   3.54
_cell_length_c   8.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2ZrBe
_chemical_formula_sum   'La2 Zr1 Be1'
_cell_volume   105.5
_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  La1  1  0.77  0.77  0.78  1.0
  La  La2  1  0.77  0.77  0.64  1.0
  Zr  Zr3  1  0.0  0.0  0.21  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0

data_La2ZrBe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.01
_cell_length_b   5.01
_cell_length_c   8.41
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   La2ZrBe
_chemical_formula_sum   'La4 Zr2 Be2'
_cell_volume   211.0
_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  0.27  0.5  0.64  1.0
  La  La1  2  0.27  0.5  0.78  1.0
  Zr  Zr2  2  0.0  0.0  0.21  1.0
  Be  Be3  2  0.0  0.0  0.0  1.0

La La Zr Be
BeLa2Zr crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeLa2Zr clusters. Be(1) is bonded in a bent 150 degrees geometry to one La(1) and one Zr(1) atom. The Be(1)-La(1) bond length is 2.21 Å. The Be(1)-Zr(1) bond length is 1.74 Å. There are two inequivalent La sites. In the first La site, La(1) is bonded in a bent 150 degrees geometry to one Be(1) and one La(2) atom. The La(1)-La(2) bond length is 1.16 Å. In the second La site, La(2) is bonded in a single-bond geometry to one La(1) atom. Zr(1) is bonded in a single-bond geometry to one Be(1) atom.