data_SrHf2Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.54
_cell_length_b   4.54
_cell_length_c   4.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrHf2Ga
_chemical_formula_sum   'Sr1 Hf2 Ga1'
_cell_volume   94.71
_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
  Sr  Sr3  1  0.27  0.27  0.0  1.0
  Hf  Hf1  1  0.0  0.27  0.3  1.0
  Hf  Hf2  1  0.27  0.0  0.3  1.0
  Ga  Ga0  1  0.0  0.0  0.0  1.0

data_SrHf2Ga
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.42
_cell_length_b   6.42
_cell_length_c   4.6
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrHf2Ga
_chemical_formula_sum   'Sr2 Hf4 Ga2'
_cell_volume   189.42
_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
  Sr  Sr0  2  0.27  0.0  0.0  1.0
  Hf  Hf1  4  0.13  0.13  0.3  1.0
  Ga  Ga2  2  0.0  0.0  0.0  1.0

Sr Hf Hf Ga
Sr Hf Hf Ga 0 3 o o o 0 1 o o o 0 2 o o o 1 3 o o o 1 2 o o o 2 3 o o o 
SrHf2Ga is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrHf2Ga clusters. Sr(1) is bonded in a 3-coordinate geometry to two equivalent Hf(1) and one Ga(1) atom. Both Sr(1)-Hf(1) bond lengths are 1.84 Å. The Sr(1)-Ga(1) bond length is 1.72 Å. Hf(1) is bonded in a 3-coordinate geometry to one Sr(1), one Hf(1), and one Ga(1) atom. The Hf(1)-Hf(1) bond length is 1.72 Å. The Hf(1)-Ga(1) bond length is 1.84 Å. Ga(1) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Hf(1) atoms.