data_SrTlGa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.86
_cell_length_b   4.86
_cell_length_c   4.35
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrTlGa
_chemical_formula_sum   'Sr1 Tl1 Ga1'
_cell_volume   89.19
_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  Sr1  1  0.0  0.81  0.4  1.0
  Tl  Tl2  1  0.43  0.4  0.41  1.0
  Ga  Ga0  1  0.0  0.0  0.9  1.0

data_SrTlGa
_symmetry_space_group_name_H-M   Pm
_cell_length_a   4.86
_cell_length_b   4.35
_cell_length_c   4.86
_cell_angle_alpha   90.0
_cell_angle_beta   120.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   SrTlGa
_chemical_formula_sum   'Sr1 Tl1 Ga1'
_cell_volume   89.19
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  Sr0  1  0.0  0.5  0.81  1.0
  Tl  Tl1  1  0.43  0.5  0.4  1.0
  Ga  Ga2  1  0.0  0.0  0.0  1.0

Sr Tl Ga
Sr Tl Ga 0 1 - o o 0 1 o + o 0 2 o + - 0 2 o + o 1 2 o o - 1 2 o o o 
SrTlGa crystallizes in the triclinic P1 space group. Sr(1) is bonded in a 5-coordinate geometry to three equivalent Tl(1) and two equivalent Ga(1) atoms. There are a spread of Sr(1)-Tl(1) bond distances ranging from 2.46-3.52 Å. There is one shorter (2.36 Å) and one longer (2.37 Å) Sr(1)-Ga(1) bond length. Tl(1) is bonded in a 5-coordinate geometry to three equivalent Sr(1) and two equivalent Ga(1) atoms. There is one shorter (2.96 Å) and one longer (3.00 Å) Tl(1)-Ga(1) bond length. Ga(1) is bonded in a 2-coordinate geometry to two equivalent Sr(1) and two equivalent Tl(1) atoms.