data_SrMnTlAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.17
_cell_length_b   5.17
_cell_length_c   5.17
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrMnTlAu
_chemical_formula_sum   'Sr1 Mn1 Tl1 Au1'
_cell_volume   97.84
_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  Sr2  1  0.49  0.49  0.49  1.0
  Mn  Mn1  1  0.0  0.0  0.0  1.0
  Tl  Tl3  1  0.83  0.83  0.83  1.0
  Au  Au0  1  0.66  0.66  0.66  1.0

data_SrMnTlAu
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.17
_cell_length_b   5.17
_cell_length_c   12.67
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrMnTlAu
_chemical_formula_sum   'Sr3 Mn3 Tl3 Au3'
_cell_volume   293.51
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  3  0.0  0.0  0.51  1.0
  Mn  Mn1  3  0.0  0.0  1.0  1.0
  Tl  Tl2  3  0.0  0.0  0.17  1.0
  Au  Au3  3  0.0  0.0  0.34  1.0

Sr Mn Tl Au
SrMnAuTl crystallizes in the trigonal R3m space group. Sr(1) is bonded in a distorted single-bond geometry to one Au(1) and three equivalent Tl(1) atoms. The Sr(1)-Au(1) bond length is 2.17 Å. All Sr(1)-Tl(1) bond lengths are 2.99 Å. Mn(1) is bonded to three equivalent Au(1) and one Tl(1) atom to form distorted MnTlAu3 trigonal pyramids that share corners with three equivalent Tl(1)Sr3MnAu trigonal bipyramids and corners with six equivalent Mn(1)TlAu3 trigonal pyramids. All Mn(1)-Au(1) bond lengths are 2.99 Å. The Mn(1)-Tl(1) bond length is 2.17 Å. Au(1) is bonded in a distorted linear geometry to one Sr(1), three equivalent Mn(1), and one Tl(1) atom. The Au(1)-Tl(1) bond length is 2.17 Å. Tl(1) is bonded to three equivalent Sr(1), one Mn(1), and one Au(1) atom to form distorted TlSr3MnAu trigonal bipyramids that share corners with six equivalent Tl(1)Sr3MnAu trigonal bipyramids and corners with three equivalent Mn(1)TlAu3 trigonal pyramids.