data_Cr2GeAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.2
_cell_length_b   4.2
_cell_length_c   4.9
_cell_angle_alpha   99.23
_cell_angle_beta   99.23
_cell_angle_gamma   43.17
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr2GeAs
_chemical_formula_sum   'Cr2 Ge1 As1'
_cell_volume   58.15
_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  Cr1  1  0.63  0.0  0.24  1.0
  Cr  Cr2  1  0.33  0.0  0.58  1.0
  Ge  Ge3  1  0.0  0.0  0.0  1.0
  As  As0  1  0.48  0.0  0.41  1.0

data_Cr2GeAs
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.09
_cell_length_b   4.2
_cell_length_c   4.9
_cell_angle_alpha   99.23
_cell_angle_beta   90.0
_cell_angle_gamma   111.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr2GeAs
_chemical_formula_sum   'Cr2 Ge1 As1'
_cell_volume   58.15
_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  0.37  0.76  1.0
  Cr  Cr1  1  0.0  0.67  0.42  1.0
  Ge  Ge2  1  0.0  0.0  0.0  1.0
  As  As3  1  0.0  0.52  0.59  1.0

Cr Cr Ge As
Cr2GeAs crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Cr2GeAs cluster. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a distorted single-bond geometry to one Ge(1) and one As(1) atom. The Cr(1)-Ge(1) bond length is 2.11 Å. The Cr(1)-As(1) bond length is 1.10 Å. In the second Cr site, Cr(2) is bonded in a single-bond geometry to one As(1) atom. The Cr(2)-As(1) bond length is 1.10 Å. Ge(1) is bonded in a 1-coordinate geometry to one Cr(1) atom. As(1) is bonded in a linear geometry to one Cr(1) and one Cr(2) atom.