The compound described by La2Al3Ge4 crystallizes in the orthorhombic Cmce space group. La(1) is bonded in a 8-coordinate geometry to four equivalent Ge(1) and four equivalent Ge(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one Ge(1) and four equivalent Ge(2) atoms. In the second Al site, Al(2) is bonded in a 6-coordinate geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 7-coordinate geometry to four equivalent La(1), one Al(1), and two equivalent Al(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent La(1), one Al(2), and four equivalent Al(1) atoms. is represented by the CIF card [CIF]
data_La2Al3Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.205
_cell_length_b   8.205
_cell_length_c   8.071
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.528
_symmetry_Int_Tables_number   1
_cell_volume   373.879
_cell_formula_units_Z   2
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  La0  1  0.115  0.885  0.582  1.0
  La  La1  1  0.385  0.615  0.082  1.0
  La  La2  1  0.615  0.385  0.918  1.0
  La  La3  1  0.885  0.115  0.418  1.0
  Al  Al4  1  0.034  0.466  0.750  1.0
  Al  Al5  1  0.000  0.000  0.000  1.0
  Al  Al6  1  0.534  0.966  0.750  1.0
  Al  Al7  1  0.500  0.500  0.500  1.0
  Al  Al8  1  0.966  0.534  0.250  1.0
  Al  Al9  1  0.466  0.034  0.250  1.0
  Ge  Ge10  1  0.701  0.799  0.750  1.0
  Ge  Ge11  1  0.201  0.299  0.750  1.0
  Ge  Ge12  1  0.299  0.201  0.250  1.0
  Ge  Ge13  1  0.687  0.313  0.554  1.0
  Ge  Ge14  1  0.799  0.701  0.250  1.0
  Ge  Ge15  1  0.813  0.187  0.054  1.0
  Ge  Ge16  1  0.187  0.813  0.946  1.0
  Ge  Ge17  1  0.313  0.687  0.446  1.0
[/CIF]
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The compound described by La2Al3Ge4 crystallizes in the orthorhombic Cmce space group. La(1) is bonded in a 8-coordinate geometry to four equivalent Ge(1) and four equivalent Ge(2) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one Ge(1) and four equivalent Ge(2) atoms. In the second Al site, Al(2) is bonded in a 6-coordinate geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 7-coordinate geometry to four equivalent La(1), one Al(1), and two equivalent Al(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to four equivalent La(1), one Al(2), and four equivalent Al(1) atoms. is represented by the CIF card [CIF]
data_La2Al3Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.205
_cell_length_b   8.205
_cell_length_c   8.071
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   136.528
_symmetry_Int_Tables_number   1
_cell_volume   373.879
_cell_formula_units_Z   2
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  La0  1  0.115  0.885  0.582  1.0
  La  La1  1  0.385  0.615  0.082  1.0
  La  La2  1  0.615  0.385  0.918  1.0
  La  La3  1  0.885  0.115  0.418  1.0
  Al  Al4  1  0.034  0.466  0.750  1.0
  Al  Al5  1  0.000  0.000  0.000  1.0
  Al  Al6  1  0.534  0.966  0.750  1.0
  Al  Al7  1  0.500  0.500  0.500  1.0
  Al  Al8  1  0.966  0.534  0.250  1.0
  Al  Al9  1  0.466  0.034  0.250  1.0
  Ge  Ge10  1  0.701  0.799  0.750  1.0
  Ge  Ge11  1  0.201  0.299  0.750  1.0
  Ge  Ge12  1  0.299  0.201  0.250  1.0
  Ge  Ge13  1  0.687  0.313  0.554  1.0
  Ge  Ge14  1  0.799  0.701  0.250  1.0
  Ge  Ge15  1  0.813  0.187  0.054  1.0
  Ge  Ge16  1  0.187  0.813  0.946  1.0
  Ge  Ge17  1  0.313  0.687  0.446  1.0
[/CIF]
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