The compound described by Al(SnO2)2 is Spinel structured and crystallizes in the trigonal R-3m space group. Al(1) is bonded to one O(2) and three equivalent O(1) atoms to form AlO4 tetrahedra that share corners with three equivalent Sn(2)O6 octahedra and corners with nine equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-54°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form distorted SnO6 octahedra that share corners with six equivalent Al(1)O4 tetrahedra, edges with two equivalent Sn(2)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. In the second Sn site, Sn(2) is bonded to six equivalent O(1) atoms to form SnO6 octahedra that share corners with six equivalent Al(1)O4 tetrahedra and edges with six equivalent Sn(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Al(1), one Sn(2), and two equivalent Sn(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Al(1) and three equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.859
_cell_length_b   6.859
_cell_length_c   6.859
_cell_angle_alpha   53.249
_cell_angle_beta   53.249
_cell_angle_gamma   53.249
_symmetry_Int_Tables_number   1
_cell_volume   192.085
_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  0.637  0.637  0.637  1.0
  Al  Al1  1  0.363  0.363  0.363  1.0
  Sn  Sn2  1  0.500  0.000  0.000  1.0
  Sn  Sn3  1  0.000  0.000  0.000  1.0
  Sn  Sn4  1  0.000  0.500  0.000  1.0
  Sn  Sn5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.763  0.274  0.763  1.0
  O  O7  1  0.237  0.237  0.726  1.0
  O  O8  1  0.726  0.237  0.237  1.0
  O  O9  1  0.263  0.263  0.263  1.0
  O  O10  1  0.763  0.763  0.274  1.0
  O  O11  1  0.237  0.726  0.237  1.0
  O  O12  1  0.274  0.763  0.763  1.0
  O  O13  1  0.737  0.737  0.737  1.0
[/CIF]
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The compound described by Al(SnO2)2 is Spinel structured and crystallizes in the trigonal R-3m space group. Al(1) is bonded to one O(2) and three equivalent O(1) atoms to form AlO4 tetrahedra that share corners with three equivalent Sn(2)O6 octahedra and corners with nine equivalent Sn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-54°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form distorted SnO6 octahedra that share corners with six equivalent Al(1)O4 tetrahedra, edges with two equivalent Sn(2)O6 octahedra, and edges with four equivalent Sn(1)O6 octahedra. In the second Sn site, Sn(2) is bonded to six equivalent O(1) atoms to form SnO6 octahedra that share corners with six equivalent Al(1)O4 tetrahedra and edges with six equivalent Sn(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Al(1), one Sn(2), and two equivalent Sn(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Al(1) and three equivalent Sn(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al(SnO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.859
_cell_length_b   6.859
_cell_length_c   6.859
_cell_angle_alpha   53.249
_cell_angle_beta   53.249
_cell_angle_gamma   53.249
_symmetry_Int_Tables_number   1
_cell_volume   192.085
_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  0.637  0.637  0.637  1.0
  Al  Al1  1  0.363  0.363  0.363  1.0
  Sn  Sn2  1  0.500  0.000  0.000  1.0
  Sn  Sn3  1  0.000  0.000  0.000  1.0
  Sn  Sn4  1  0.000  0.500  0.000  1.0
  Sn  Sn5  1  0.000  0.000  0.500  1.0
  O  O6  1  0.763  0.274  0.763  1.0
  O  O7  1  0.237  0.237  0.726  1.0
  O  O8  1  0.726  0.237  0.237  1.0
  O  O9  1  0.263  0.263  0.263  1.0
  O  O10  1  0.763  0.763  0.274  1.0
  O  O11  1  0.237  0.726  0.237  1.0
  O  O12  1  0.274  0.763  0.763  1.0
  O  O13  1  0.737  0.737  0.737  1.0
[/CIF]
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