The crystal structure described by Al2Ge(HO3)2 crystallizes in the monoclinic C2/c space group. Al(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with four equivalent Ge(1)O4 tetrahedra and edges with three equivalent Al(1)O6 octahedra. Ge(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with eight equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-60°. H(1) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Al(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Al(1) and one Ge(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Al(1) and one H(1) atom. is represented by the CIF file [CIF]
data_Al2Ge(HO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.016
_cell_length_b   5.016
_cell_length_c   9.062
_cell_angle_alpha   83.071
_cell_angle_beta   83.071
_cell_angle_gamma   114.730
_symmetry_Int_Tables_number   1
_cell_volume   201.849
_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
  Al  Al0  1  0.558  0.292  0.914  1.0
  Al  Al1  1  0.708  0.442  0.586  1.0
  Al  Al2  1  0.442  0.708  0.086  1.0
  Al  Al3  1  0.292  0.558  0.414  1.0
  Ge  Ge4  1  0.276  0.724  0.750  1.0
  Ge  Ge5  1  0.724  0.276  0.250  1.0
  H  H6  1  0.965  0.138  0.932  1.0
  H  H7  1  0.862  0.035  0.568  1.0
  H  H8  1  0.035  0.862  0.068  1.0
  H  H9  1  0.138  0.965  0.432  1.0
  O  O10  1  0.479  0.666  0.589  1.0
  O  O11  1  0.334  0.521  0.911  1.0
  O  O12  1  0.521  0.334  0.411  1.0
  O  O13  1  0.666  0.479  0.089  1.0
  O  O14  1  0.424  0.119  0.739  1.0
  O  O15  1  0.881  0.576  0.761  1.0
  O  O16  1  0.576  0.881  0.261  1.0
  O  O17  1  0.119  0.424  0.239  1.0
  O  O18  1  0.748  0.050  0.956  1.0
  O  O19  1  0.950  0.252  0.544  1.0
  O  O20  1  0.252  0.950  0.044  1.0
  O  O21  1  0.050  0.748  0.456  1.0
[/CIF]
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The crystal structure described by Al2Ge(HO3)2 crystallizes in the monoclinic C2/c space group. Al(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form AlO6 octahedra that share corners with four equivalent Ge(1)O4 tetrahedra and edges with three equivalent Al(1)O6 octahedra. Ge(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form GeO4 tetrahedra that share corners with eight equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-60°. H(1) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to two equivalent Al(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Al(1) and one Ge(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Al(1) and one H(1) atom. is represented by the CIF file [CIF]
data_Al2Ge(HO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.016
_cell_length_b   5.016
_cell_length_c   9.062
_cell_angle_alpha   83.071
_cell_angle_beta   83.071
_cell_angle_gamma   114.730
_symmetry_Int_Tables_number   1
_cell_volume   201.849
_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
  Al  Al0  1  0.558  0.292  0.914  1.0
  Al  Al1  1  0.708  0.442  0.586  1.0
  Al  Al2  1  0.442  0.708  0.086  1.0
  Al  Al3  1  0.292  0.558  0.414  1.0
  Ge  Ge4  1  0.276  0.724  0.750  1.0
  Ge  Ge5  1  0.724  0.276  0.250  1.0
  H  H6  1  0.965  0.138  0.932  1.0
  H  H7  1  0.862  0.035  0.568  1.0
  H  H8  1  0.035  0.862  0.068  1.0
  H  H9  1  0.138  0.965  0.432  1.0
  O  O10  1  0.479  0.666  0.589  1.0
  O  O11  1  0.334  0.521  0.911  1.0
  O  O12  1  0.521  0.334  0.411  1.0
  O  O13  1  0.666  0.479  0.089  1.0
  O  O14  1  0.424  0.119  0.739  1.0
  O  O15  1  0.881  0.576  0.761  1.0
  O  O16  1  0.576  0.881  0.261  1.0
  O  O17  1  0.119  0.424  0.239  1.0
  O  O18  1  0.748  0.050  0.956  1.0
  O  O19  1  0.950  0.252  0.544  1.0
  O  O20  1  0.252  0.950  0.044  1.0
  O  O21  1  0.050  0.748  0.456  1.0
[/CIF]
.