data_LaAlGe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.53
_cell_length_b   5.53
_cell_length_c   5.53
_cell_angle_alpha   132.81
_cell_angle_beta   132.81
_cell_angle_gamma   68.95
_symmetry_Int_Tables_number   1
_chemical_formula_structural   LaAlGe2
_chemical_formula_sum   'La1 Al1 Ge2'
_cell_volume   89.12
_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
  La  La3  1  0.0  0.0  0.55  1.0
  Al  Al0  1  0.0  0.0  0.0  1.0
  Ge  Ge1  1  0.21  0.0  0.28  1.0
  Ge  Ge2  1  0.0  0.21  0.28  1.0

data_LaAlGe2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.26
_cell_length_b   6.26
_cell_length_c   5.53
_cell_angle_alpha   90.0
_cell_angle_beta   124.48
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   LaAlGe2
_chemical_formula_sum   'La2 Al2 Ge4'
_cell_volume   178.24
_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
  La  La0  2  0.45  0.0  0.45  1.0
  Al  Al1  2  0.0  0.0  0.0  1.0
  Ge  Ge2  4  0.33  0.39  0.93  1.0

La Al Ge Ge
La Al Ge Ge 0 3 o o o 0 2 o o o 0 1 o o + 1 3 o o o 1 2 o o o 2 3 o o o 
LaAlGe2 crystallizes in the monoclinic Cm space group. La(1) is bonded in a 5-coordinate geometry to one Al(1) and four equivalent Ge(1) atoms. The La(1)-Al(1) bond length is 2.46 Å. There are two shorter (2.48 Å) and two longer (3.50 Å) La(1)-Ge(1) bond lengths. Al(1) is bonded in a 3-coordinate geometry to one La(1) and two equivalent Ge(1) atoms. Both Al(1)-Ge(1) bond lengths are 1.13 Å. Ge(1) is bonded in a distorted single-bond geometry to two equivalent La(1) and one Al(1) atom.