data_NbGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.72
_cell_length_b   9.72
_cell_length_c   9.72
_cell_angle_alpha   17.28
_cell_angle_beta   17.28
_cell_angle_gamma   17.28
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NbGa
_chemical_formula_sum   'Nb2 Ga2'
_cell_volume   70.65
_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
  Nb  Nb2  1  0.0  0.0  0.86  1.0
  Nb  Nb3  1  0.0  0.0  0.85  1.0
  Ga  Ga0  1  0.0  0.0  0.11  1.0
  Ga  Ga1  1  0.0  0.0  0.6  1.0

data_NbGa
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   5.06
_cell_length_b   2.92
_cell_length_c   9.72
_cell_angle_alpha   90.0
_cell_angle_beta   99.99
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   NbGa
_chemical_formula_sum   'Nb4 Ga4'
_cell_volume   141.3
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-x, y, -z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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
  Nb  Nb0  4  0.0  0.0  0.01  1.0
  Ga  Ga1  4  0.0  0.0  0.26  1.0

Nb Nb Ga Ga
Ga(Nb) crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of two Ga(Nb) clusters. Nb(1) is bonded in a single-bond geometry to one Nb(1) and one Ga(1) atom. The Nb(1)-Nb(1) bond length is 0.16 Å. The Nb(1)-Ga(1) bond length is 2.42 Å. Ga(1) is bonded in a single-bond geometry to one Nb(1) atom.