data_BeGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.66
_cell_length_b   4.99
_cell_length_c   4.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeGa
_chemical_formula_sum   'Be2 Ga2'
_cell_volume   53.82
_cell_formula_units_Z   2
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  0.5  1.0
  Be  Be1  1  0.33  0.5  0.56  1.0
  Ga  Ga2  1  0.33  0.0  0.48  1.0
  Ga  Ga3  1  0.0  0.5  0.57  1.0

data_BeGa
_symmetry_space_group_name_H-M   P2_1/m
_cell_length_a   2.66
_cell_length_b   4.99
_cell_length_c   4.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   11
_chemical_formula_structural   BeGa
_chemical_formula_sum   'Be2 Ga2'
_cell_volume   53.82
_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, y+1/2, -z'
  4  'x, -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  0.16  0.25  0.53  1.0
  Ga  Ga1  2  0.16  0.75  0.45  1.0

Be Be Ga Ga
BeGa crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two BeGa clusters. Be(1) is bonded in a 1-coordinate geometry to one Ga(1) atom. The Be(1)-Ga(1) bond length is 0.88 Å. Ga(1) is bonded in a 1-coordinate geometry to one Be(1) atom.