data_CrGe5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.22
_cell_length_b   7.22
_cell_length_c   3.95
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   148.47
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrGe5
_chemical_formula_sum   'Cr1 Ge5'
_cell_volume   107.84
_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
  Cr  Cr0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.96  0.23  0.98  1.0
  Ge  Ge2  1  0.96  0.9  0.0  1.0
  Ge  Ge3  1  0.96  0.0  0.98  1.0
  Ge  Ge4  1  0.96  0.1  0.0  1.0
  Ge  Ge5  1  0.96  0.77  0.98  1.0

data_CrGe5
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.92
_cell_length_b   3.95
_cell_length_c   7.22
_cell_angle_alpha   90.0
_cell_angle_beta   105.77
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CrGe5
_chemical_formula_sum   'Cr1 Ge5'
_cell_volume   107.84
_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
  Cr  Cr0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.0  0.02  0.04  1.0
  Ge  Ge2  1  0.1  0.0  0.14  1.0
  Ge  Ge3  1  0.23  0.02  0.27  1.0
  Ge  Ge4  1  0.77  0.02  0.81  1.0
  Ge  Ge5  1  0.9  0.0  0.94  1.0

Cr Ge Ge Ge Ge Ge
CrGe5 is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one CrGe5 cluster. Cr(1) is bonded in a distorted bent 120 degrees geometry to one Ge(2) and one Ge(3) atom. The Cr(1)-Ge(2) bond length is 0.52 Å. The Cr(1)-Ge(3) bond length is 0.29 Å. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a single-bond geometry to one Ge(4) atom. The Ge(1)-Ge(4) bond length is 0.93 Å. In the second Ge site, Ge(2) is bonded in a distorted single-bond geometry to one Cr(1) and one Ge(5) atom. The Ge(2)-Ge(5) bond length is 0.93 Å. In the third Ge site, Ge(3) is bonded in a single-bond geometry to one Cr(1) and one Ge(4) atom. The Ge(3)-Ge(4) bond length is 0.74 Å. In the fourth Ge site, Ge(4) is bonded in a linear geometry to one Ge(1) and one Ge(3) atom. In the fifth Ge site, Ge(5) is bonded in a single-bond geometry to one Ge(2) atom.