data_Be2ZnBi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.19
_cell_length_b   4.19
_cell_length_c   3.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Be2ZnBi
_chemical_formula_sum   'Be2 Zn1 Bi1'
_cell_volume   67.32
_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  0.0  0.09  0.92  1.0
  Be  Be1  1  0.09  0.0  0.92  1.0
  Zn  Zn3  1  0.0  0.0  0.0  1.0
  Bi  Bi2  1  0.09  0.09  0.0  1.0

data_Be2ZnBi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.92
_cell_length_b   5.92
_cell_length_c   3.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Be2ZnBi
_chemical_formula_sum   'Be4 Zn2 Bi2'
_cell_volume   134.64
_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  0.05  0.05  0.92  1.0
  Zn  Zn1  2  0.0  0.0  0.0  1.0
  Bi  Bi2  2  0.09  0.0  0.0  1.0

Be Be Zn Bi
Be2ZnBi is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Be2ZnBi clusters. Be(1) is bonded in a 3-coordinate geometry to one Be(1), one Zn(1), and one Bi(1) atom. The Be(1)-Be(1) bond length is 0.55 Å. The Be(1)-Zn(1) bond length is 0.49 Å. The Be(1)-Bi(1) bond length is 0.49 Å. Zn(1) is bonded in a 3-coordinate geometry to two equivalent Be(1) and one Bi(1) atom. The Zn(1)-Bi(1) bond length is 0.55 Å. Bi(1) is bonded in a 3-coordinate geometry to two equivalent Be(1) and one Zn(1) atom.