data_TaCr2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.96
_cell_length_b   7.96
_cell_length_c   7.96
_cell_angle_alpha   21.69
_cell_angle_beta   21.69
_cell_angle_gamma   21.69
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaCr2Ge
_chemical_formula_sum   'Ta1 Cr2 Ge1'
_cell_volume   60.45
_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
  Ta  Ta3  1  0.0  0.0  0.66  1.0
  Cr  Cr0  1  0.0  0.0  0.88  1.0
  Cr  Cr1  1  0.0  0.0  0.44  1.0
  Ge  Ge2  1  0.0  0.0  0.0  1.0

data_TaCr2Ge
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.19
_cell_length_b   3.0
_cell_length_c   7.96
_cell_angle_alpha   90.0
_cell_angle_beta   102.55
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TaCr2Ge
_chemical_formula_sum   'Ta2 Cr4 Ge2'
_cell_volume   120.9
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Ta  Ta0  2  0.0  0.0  0.34  1.0
  Cr  Cr1  2  -0.0  0.0  0.56  1.0
  Cr  Cr2  2  0.0  0.0  0.12  1.0
  Ge  Ge3  2  0.0  0.0  0.0  1.0

Ta Cr Cr Ge
Ta Cr Cr Ge 0 2 o o o 0 1 o o o 1 3 o o + 
TaCr2Ge is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two TaCr2Ge clusters. Ta(1) is bonded in a linear geometry to one Cr(1) and one Cr(2) atom. The Ta(1)-Cr(1) bond length is 1.74 Å. The Ta(1)-Cr(2) bond length is 1.74 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a distorted linear geometry to one Ta(1) and one Ge(1) atom. The Cr(1)-Ge(1) bond length is 0.97 Å. In the second Cr site, Cr(2) is bonded in a single-bond geometry to one Ta(1) atom. Ge(1) is bonded in a single-bond geometry to one Cr(1) atom.