data_GaSiNi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.83
_cell_length_b   3.83
_cell_length_c   3.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaSiNi2
_chemical_formula_sum   'Ga1 Si1 Ni2'
_cell_volume   47.42
_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
  Ga  Ga0  1  0.91  0.91  0.0  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Ni  Ni1  1  0.91  0.0  0.62  1.0
  Ni  Ni2  1  0.0  0.91  0.62  1.0

data_GaSiNi2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.41
_cell_length_b   5.41
_cell_length_c   3.24
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   GaSiNi2
_chemical_formula_sum   'Ga2 Si2 Ni4'
_cell_volume   94.84
_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
  Ga  Ga0  2  0.41  0.5  0.0  1.0
  Si  Si1  2  0.0  0.0  0.0  1.0
  Ni  Ni2  4  0.46  0.46  0.62  1.0

Ga Si Ni Ni
(Ni)2SiGa crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Ni clusters and two SiGa clusters. In each Ni cluster, Ni(1) is bonded in a single-bond geometry to one Ni(1) atom. The Ni(1)-Ni(1) bond length is 0.47 Å. In each SiGa cluster, Ga(1) is bonded in a single-bond geometry to one Si(1) atom. The Ga(1)-Si(1) bond length is 0.47 Å. Si(1) is bonded in a single-bond geometry to one Ga(1) atom.