data_BeCoBi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.77
_cell_length_b   4.77
_cell_length_c   3.42
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeCoBi2
_chemical_formula_sum   'Be1 Co1 Bi2'
_cell_volume   77.96
_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  0.0  0.0  1.0
  Co  Co3  1  0.39  0.39  0.0  1.0
  Bi  Bi1  1  0.0  0.39  0.71  1.0
  Bi  Bi2  1  0.39  0.0  0.71  1.0

data_BeCoBi2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.75
_cell_length_b   6.75
_cell_length_c   3.42
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BeCoBi2
_chemical_formula_sum   'Be2 Co2 Bi4'
_cell_volume   155.92
_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  2  0.0  0.0  0.0  1.0
  Co  Co1  2  0.39  0.0  0.0  1.0
  Bi  Bi2  4  0.19  0.19  0.71  1.0

Be Co Bi Bi
Be Co Bi Bi 0 3 o o - 0 2 o o - 1 2 o o - 1 3 o o - 
BeCoBi2 is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BeCoBi2 clusters. Be(1) is bonded in a 2-coordinate geometry to two equivalent Bi(1) atoms. Both Be(1)-Bi(1) bond lengths are 2.10 Å. Co(1) is bonded in a 2-coordinate geometry to two equivalent Bi(1) atoms. Both Co(1)-Bi(1) bond lengths are 2.10 Å. Bi(1) is bonded in a 2-coordinate geometry to one Be(1) and one Co(1) atom.