data_CoNiGe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.86
_cell_length_b   3.86
_cell_length_c   3.86
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoNiGe
_chemical_formula_sum   'Co1 Ni1 Ge1'
_cell_volume   40.68
_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
  Co  Co0  1  0.0  0.0  0.0  1.0
  Ni  Ni2  1  0.09  0.09  0.09  1.0
  Ge  Ge1  1  0.36  0.36  0.36  1.0

data_CoNiGe
_symmetry_space_group_name_H-M   R3m
_cell_length_a   3.86
_cell_length_b   3.86
_cell_length_c   9.46
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   CoNiGe
_chemical_formula_sum   'Co3 Ni3 Ge3'
_cell_volume   122.05
_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
  Co  Co0  3  0.0  0.0  0.0  1.0
  Ni  Ni1  3  0.0  0.0  0.91  1.0
  Ge  Ge2  3  0.0  0.0  0.64  1.0

Co Ni Ge
NiCoGe crystallizes in the trigonal R3m space group. Co(1) is bonded in a single-bond geometry to one Ni(1) and three equivalent Ge(1) atoms. The Co(1)-Ni(1) bond length is 0.90 Å. All Co(1)-Ge(1) bond lengths are 2.25 Å. Ni(1) is bonded in a single-bond geometry to one Co(1) and four equivalent Ge(1) atoms. There are three shorter (2.31 Å) and one longer (2.56 Å) Ni(1)-Ge(1) bond length. Ge(1) is bonded to three equivalent Co(1) and four equivalent Ni(1) atoms to form a mixture of corner and edge-sharing GeCo3Ni4 hexagonal pyramids.