data_SrGa2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.77
_cell_length_b   5.77
_cell_length_c   5.77
_cell_angle_alpha   132.63
_cell_angle_beta   132.63
_cell_angle_gamma   69.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrGa2As
_chemical_formula_sum   'Sr1 Ga2 As1'
_cell_volume   102.06
_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  0.0  0.0  0.75  1.0
  Ga  Ga1  1  0.32  0.0  0.37  1.0
  Ga  Ga2  1  0.0  0.32  0.37  1.0
  As  As0  1  0.0  0.0  0.0  1.0

data_SrGa2As
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.56
_cell_length_b   6.56
_cell_length_c   5.77
_cell_angle_alpha   90.0
_cell_angle_beta   124.62
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrGa2As
_chemical_formula_sum   'Sr2 Ga4 As2'
_cell_volume   204.12
_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  0.0  0.0  0.75  1.0
  Ga  Ga1  4  0.34  0.34  0.06  1.0
  As  As2  2  0.0  0.0  0.0  1.0

Sr Ga Ga As
SrGa2As is alpha Niobium phosphide-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrGa2As clusters. Sr(1) is bonded in a single-bond geometry to one As(1) atom. The Sr(1)-As(1) bond length is 1.45 Å. Ga(1) is bonded in a distorted single-bond geometry to one As(1) atom. The Ga(1)-As(1) bond length is 1.63 Å. As(1) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent Ga(1) atoms.