data_ReNiGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.02
_cell_length_b   4.02
_cell_length_c   4.02
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ReNiGe
_chemical_formula_sum   'Re1 Ni1 Ge1'
_cell_volume   45.98
_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
  Re  Re2  1  0.84  0.84  0.84  1.0
  Ni  Ni1  1  0.0  0.0  0.0  1.0
  Ge  Ge0  1  0.42  0.42  0.42  1.0

data_ReNiGe
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.02
_cell_length_b   4.02
_cell_length_c   9.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   ReNiGe
_chemical_formula_sum   'Re3 Ni3 Ge3'
_cell_volume   137.94
_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
  Re  Re0  3  0.0  0.0  0.16  1.0
  Ni  Ni1  3  0.0  0.0  0.0  1.0
  Ge  Ge2  3  0.0  0.0  0.58  1.0

Re Ni Ge
ReNiGe crystallizes in the trigonal R3m space group. Re(1) is bonded to one Ni(1) and three equivalent Ge(1) atoms to form distorted ReNiGe3 tetrahedra that share corners with three equivalent Ni(1)ReGe3 tetrahedra, corners with six equivalent Re(1)NiGe3 tetrahedra, and edges with three equivalent Ni(1)ReGe3 tetrahedra. The Re(1)-Ni(1) bond length is 1.54 Å. All Re(1)-Ge(1) bond lengths are 2.48 Å. Ni(1) is bonded to one Re(1) and three equivalent Ge(1) atoms to form distorted NiReGe3 tetrahedra that share corners with three equivalent Re(1)NiGe3 tetrahedra, corners with six equivalent Ni(1)ReGe3 tetrahedra, and edges with three equivalent Re(1)NiGe3 tetrahedra. All Ni(1)-Ge(1) bond lengths are 2.48 Å. Ge(1) is bonded in a 6-coordinate geometry to three equivalent Re(1) and three equivalent Ni(1) atoms.