data_AlGeB2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.82
_cell_length_b   3.82
_cell_length_c   3.16
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AlGeB2
_chemical_formula_sum   'Al1 Ge1 B2'
_cell_volume   46.12
_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  0.0  1.0
  Ge  Ge3  1  0.91  0.91  0.0  1.0
  B  B1  1  0.0  0.91  0.58  1.0
  B  B2  1  0.91  0.0  0.58  1.0

data_AlGeB2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.41
_cell_length_b   5.41
_cell_length_c   3.16
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AlGeB2
_chemical_formula_sum   'Al2 Ge2 B4'
_cell_volume   92.24
_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  0.0  1.0
  Ge  Ge1  2  0.41  0.5  -0.0  1.0
  B  B2  4  0.46  0.46  0.58  1.0

Al Ge B B
Al Ge B B 0 1 - - o 2 3 - + o 
(B)2AlGe crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two 14452-61-0 molecules and two AlGe clusters. In each AlGe cluster, Al(1) is bonded in a single-bond geometry to one Ge(1) atom. The Al(1)-Ge(1) bond length is 0.48 Å. Ge(1) is bonded in a single-bond geometry to one Al(1) atom.