data_Be2GaPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.25
_cell_length_b   4.25
_cell_length_c   3.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2GaPb
_chemical_formula_sum   'Be2 Ga1 Pb1'
_cell_volume   68.53
_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
  Be  Be0  1  0.13  0.0  0.9  1.0
  Be  Be1  1  0.0  0.13  0.9  1.0
  Ga  Ga2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.13  0.13  0.0  1.0

data_Be2GaPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.01
_cell_length_b   6.01
_cell_length_c   3.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2GaPb
_chemical_formula_sum   'Be4 Ga2 Pb2'
_cell_volume   137.06
_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
  Be  Be0  4  0.06  0.06  0.9  1.0
  Ga  Ga1  2  0.0  0.0  0.0  1.0
  Pb  Pb2  2  0.13  0.0  0.0  1.0

Be Be Ga Pb
Be Be Ga Pb 0 2 o o + 0 1 o o o 0 3 o o + 1 2 o o + 1 3 o o + 2 3 o o o 
Be2GaPb is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Be2GaPb clusters. Be(1) is bonded in a 2-coordinate geometry to one Ga(1) and one Pb(1) atom. The Be(1)-Ga(1) bond length is 0.66 Å. The Be(1)-Pb(1) bond length is 0.66 Å. Ga(1) is bonded in a 3-coordinate geometry to two equivalent Be(1) and one Pb(1) atom. The Ga(1)-Pb(1) bond length is 0.75 Å. Pb(1) is bonded in a 3-coordinate geometry to two equivalent Be(1) and one Ga(1) atom.