data_HfGePt
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.45
_cell_length_b   4.45
_cell_length_c   4.45
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HfGePt
_chemical_formula_sum   'Hf1 Ge1 Pt1'
_cell_volume   62.46
_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
  Hf  Hf1  1  0.57  0.57  0.57  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0
  Pt  Pt2  1  0.15  0.15  0.15  1.0

data_HfGePt
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.45
_cell_length_b   4.45
_cell_length_c   10.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   HfGePt
_chemical_formula_sum   'Hf3 Ge3 Pt3'
_cell_volume   187.37
_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
  Hf  Hf0  3  0.0  0.0  0.43  1.0
  Ge  Ge1  3  0.0  0.0  0.0  1.0
  Pt  Pt2  3  0.0  0.0  0.85  1.0

Hf Ge Pt
HfPtGe crystallizes in the trigonal R3m space group. Hf(1) is bonded in a 6-coordinate geometry to three equivalent Pt(1) and three equivalent Ge(1) atoms. All Hf(1)-Pt(1) bond lengths are 2.76 Å. All Hf(1)-Ge(1) bond lengths are 2.76 Å. Pt(1) is bonded to three equivalent Hf(1) and one Ge(1) atom to form distorted PtHf3Ge tetrahedra that share corners with three equivalent Ge(1)Hf3Pt tetrahedra, corners with six equivalent Pt(1)Hf3Ge tetrahedra, and edges with three equivalent Ge(1)Hf3Pt tetrahedra. The Pt(1)-Ge(1) bond length is 1.63 Å. Ge(1) is bonded to three equivalent Hf(1) and one Pt(1) atom to form distorted GeHf3Pt tetrahedra that share corners with three equivalent Pt(1)Hf3Ge tetrahedra, corners with six equivalent Ge(1)Hf3Pt tetrahedra, and edges with three equivalent Pt(1)Hf3Ge tetrahedra.