data_LaTaBe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.87
_cell_length_b   4.87
_cell_length_c   2.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaTaBe2
_chemical_formula_sum   'La1 Ta1 Be2'
_cell_volume   69.01
_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
  Ta  Ta3  1  0.44  0.44  0.0  1.0
  Be  Be0  1  0.44  0.0  0.45  1.0
  Be  Be1  1  0.0  0.44  0.45  1.0

data_LaTaBe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.89
_cell_length_b   6.89
_cell_length_c   2.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LaTaBe2
_chemical_formula_sum   'La2 Ta2 Be4'
_cell_volume   138.02
_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
  Ta  Ta1  2  0.44  0.0  0.0  1.0
  Be  Be2  4  0.22  0.22  0.45  1.0

La Ta Be Be
Be2LaTa crystallizes in the monoclinic Cm space group. Be(1) is bonded in a 8-coordinate geometry to four equivalent La(1) and four equivalent Ta(1) atoms. There are a spread of Be(1)-La(1) bond distances ranging from 2.50-3.17 Å. There are a spread of Be(1)-Ta(1) bond distances ranging from 2.50-3.17 Å. La(1) is bonded in a 8-coordinate geometry to eight equivalent Be(1) atoms. Ta(1) is bonded in a 4-coordinate geometry to eight equivalent Be(1) atoms.