data_CrGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.51
_cell_length_b   4.51
_cell_length_c   4.51
_cell_angle_alpha   34.85
_cell_angle_beta   34.85
_cell_angle_gamma   34.85
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrGa
_chemical_formula_sum   'Cr1 Ga1'
_cell_volume   26.78
_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
  Cr  Cr0  1  0.0  0.0  0.0  1.0
  Ga  Ga1  1  0.0  0.0  0.35  1.0

data_CrGa
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.68
_cell_length_b   2.7
_cell_length_c   4.51
_cell_angle_alpha   90.0
_cell_angle_beta   110.23
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CrGa
_chemical_formula_sum   'Cr2 Ga2'
_cell_volume   53.55
_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
  Cr  Cr0  2  0.0  0.0  0.0  1.0
  Ga  Ga1  2  0.0  0.0  0.65  1.0

Cr Ga
Cr Ga 0 1 o o o 
CrGa crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CrGa clusters. Cr(1) is bonded in a single-bond geometry to one Ga(1) atom. The Cr(1)-Ga(1) bond length is 1.59 Å. Ga(1) is bonded in a single-bond geometry to one Cr(1) atom.