data_AlFe2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.69
_cell_length_b   2.69
_cell_length_c   7.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlFe2Ge
_chemical_formula_sum   'Al1 Fe2 Ge1'
_cell_volume   52.5
_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
  Al  Al0  1  0.0  0.0  0.8  1.0
  Fe  Fe1  1  0.34  0.34  0.17  1.0
  Fe  Fe2  1  0.0  0.0  0.6  1.0
  Ge  Ge3  1  0.34  0.34  0.35  1.0

data_AlFe2Ge
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.8
_cell_length_b   3.8
_cell_length_c   7.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlFe2Ge
_chemical_formula_sum   'Al2 Fe4 Ge2'
_cell_volume   105.0
_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
  Al  Al0  2  0.0  0.0  0.8  1.0
  Fe  Fe1  2  0.0  0.0  0.6  1.0
  Fe  Fe2  2  0.34  0.0  0.17  1.0
  Ge  Ge3  2  0.34  0.0  0.35  1.0

Al Fe Fe Ge
FeAlFeGe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two alumanylidyneiron molecules and two FeGe clusters. In each FeGe cluster, Fe(1) is bonded in a single-bond geometry to one Ge(1) atom. The Fe(1)-Ge(1) bond length is 1.32 Å. Ge(1) is bonded in a distorted single-bond geometry to one Fe(1) atom.