data_PrGePt2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.86
_cell_length_b   4.86
_cell_length_c   4.86
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   PrGePt2
_chemical_formula_sum   'Pr1 Ge1 Pt2'
_cell_volume   81.32
_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
  Pr  Pr1  1  0.44  0.44  0.44  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0
  Pt  Pt2  1  0.72  0.72  0.72  1.0
  Pt  Pt3  1  0.16  0.16  0.16  1.0

data_PrGePt2
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.86
_cell_length_b   4.86
_cell_length_c   11.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   PrGePt2
_chemical_formula_sum   'Pr3 Ge3 Pt6'
_cell_volume   243.95
_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
  Pr  Pr0  3  0.0  0.0  0.56  1.0
  Ge  Ge1  3  0.0  0.0  0.0  1.0
  Pt  Pt2  3  0.0  0.0  0.28  1.0
  Pt  Pt3  3  0.0  0.0  0.84  1.0

Pr Ge Pt Pt
PrPt2Ge is Heusler structured and crystallizes in the trigonal R3m space group. Pr(1) is bonded in a 11-coordinate geometry to four equivalent Pt(1), four equivalent Pt(2), and three equivalent Ge(1) atoms. There are three shorter (2.88 Å) and one longer (3.34 Å) Pr(1)-Pt(1) bond length. There are three shorter (2.88 Å) and one longer (3.34 Å) Pr(1)-Pt(2) bond length. All Pr(1)-Ge(1) bond lengths are 3.07 Å. There are two inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 7-coordinate geometry to four equivalent Pr(1) and three equivalent Ge(1) atoms. All Pt(1)-Ge(1) bond lengths are 2.88 Å. In the second Pt site, Pt(2) is bonded in a distorted single-bond geometry to four equivalent Pr(1) and one Ge(1) atom. The Pt(2)-Ge(1) bond length is 1.88 Å. Ge(1) is bonded in a single-bond geometry to three equivalent Pr(1), one Pt(2), and three equivalent Pt(1) atoms.