data_SrHf3Pt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.2
_cell_length_b   5.2
_cell_length_c   5.2
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrHf3Pt
_chemical_formula_sum   'Sr1 Hf3 Pt1'
_cell_volume   140.32
_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  Sr0  1  0.0  0.0  0.0  1.0
  Hf  Hf1  1  0.6  0.0  0.6  1.0
  Hf  Hf2  1  0.6  0.6  0.0  1.0
  Hf  Hf3  1  0.0  0.6  0.6  1.0
  Pt  Pt4  1  0.6  0.6  0.6  1.0

data_SrHf3Pt
_symmetry_space_group_name_H-M   R3m
_cell_length_a   7.35
_cell_length_b   7.35
_cell_length_c   9.0
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrHf3Pt
_chemical_formula_sum   'Sr3 Hf9 Pt3'
_cell_volume   420.97
_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  0.0  1.0
  Hf  Hf1  9  0.2  0.4  0.4  1.0
  Pt  Pt2  3  0.0  0.0  0.6  1.0

Sr Hf Hf Hf Pt
SrHf3Pt crystallizes in the trigonal R3m space group. Sr(1) is bonded in a 3-coordinate geometry to three equivalent Hf(1) atoms. All Sr(1)-Hf(1) bond lengths are 2.95 Å. Hf(1) is bonded in a distorted single-bond geometry to one Sr(1) and two equivalent Pt(1) atoms. There is one shorter (2.09 Å) and one longer (3.11 Å) Hf(1)-Pt(1) bond length. Pt(1) is bonded to six equivalent Hf(1) atoms to form distorted corner-sharing PtHf6 octahedra. The corner-sharing octahedra are not tilted.