The compound described by Th2Al is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. Th(1) is bonded in a 4-coordinate geometry to four equivalent Al(1) atoms. Al(1) is bonded in a distorted q6 geometry to eight equivalent Th(1) and two equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_Th2Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.715
_cell_length_b   6.148
_cell_length_c   6.148
_cell_angle_alpha   77.525
_cell_angle_beta   62.304
_cell_angle_gamma   62.304
_symmetry_Int_Tables_number   1
_cell_volume   169.353
_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
  Th  Th0  1  0.158  0.500  0.185  1.0
  Th  Th1  1  0.342  0.815  0.500  1.0
  Th  Th2  1  0.658  0.185  0.500  1.0
  Th  Th3  1  0.842  0.500  0.815  1.0
  Al  Al4  1  0.250  0.000  0.000  1.0
  Al  Al5  1  0.750  0.000  0.000  1.0
[/CIF]
.
The compound described by Th2Al is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. Th(1) is bonded in a 4-coordinate geometry to four equivalent Al(1) atoms. Al(1) is bonded in a distorted q6 geometry to eight equivalent Th(1) and two equivalent Al(1) atoms. is represented by the CIF file [CIF]
data_Th2Al
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.715
_cell_length_b   6.148
_cell_length_c   6.148
_cell_angle_alpha   77.525
_cell_angle_beta   62.304
_cell_angle_gamma   62.304
_symmetry_Int_Tables_number   1
_cell_volume   169.353
_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
  Th  Th0  1  0.158  0.500  0.185  1.0
  Th  Th1  1  0.342  0.815  0.500  1.0
  Th  Th2  1  0.658  0.185  0.500  1.0
  Th  Th3  1  0.842  0.500  0.815  1.0
  Al  Al4  1  0.250  0.000  0.000  1.0
  Al  Al5  1  0.750  0.000  0.000  1.0
[/CIF]
.