The crystal structure described by Th3Al2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent Th sites. In the first Th site, Th(1) is bonded in a distorted square co-planar geometry to four equivalent Al(1) atoms. In the second Th site, Th(2) is bonded in a 6-coordinate geometry to six equivalent Al(1) atoms. Al(1) is bonded in a 9-coordinate geometry to two equivalent Th(1), six equivalent Th(2), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Th3Al2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.779
_cell_length_b   8.556
_cell_length_c   8.556
_cell_angle_alpha   90.001
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   276.696
_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  0.000  0.000  0.000  1.0
  Th  Th1  1  0.000  0.500  0.500  1.0
  Th  Th2  1  0.500  0.182  0.682  1.0
  Th  Th3  1  0.500  0.318  0.182  1.0
  Th  Th4  1  0.500  0.682  0.818  1.0
  Th  Th5  1  0.500  0.818  0.318  1.0
  Al  Al6  1  0.000  0.388  0.888  1.0
  Al  Al7  1  0.000  0.112  0.388  1.0
  Al  Al8  1  0.000  0.888  0.612  1.0
  Al  Al9  1  0.000  0.612  0.112  1.0
[/CIF]
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The crystal structure described by Th3Al2 crystallizes in the tetragonal P4/mbm space group. There are two inequivalent Th sites. In the first Th site, Th(1) is bonded in a distorted square co-planar geometry to four equivalent Al(1) atoms. In the second Th site, Th(2) is bonded in a 6-coordinate geometry to six equivalent Al(1) atoms. Al(1) is bonded in a 9-coordinate geometry to two equivalent Th(1), six equivalent Th(2), and one Al(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Th3Al2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.779
_cell_length_b   8.556
_cell_length_c   8.556
_cell_angle_alpha   90.001
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   276.696
_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  0.000  0.000  0.000  1.0
  Th  Th1  1  0.000  0.500  0.500  1.0
  Th  Th2  1  0.500  0.182  0.682  1.0
  Th  Th3  1  0.500  0.318  0.182  1.0
  Th  Th4  1  0.500  0.682  0.818  1.0
  Th  Th5  1  0.500  0.818  0.318  1.0
  Al  Al6  1  0.000  0.388  0.888  1.0
  Al  Al7  1  0.000  0.112  0.388  1.0
  Al  Al8  1  0.000  0.888  0.612  1.0
  Al  Al9  1  0.000  0.612  0.112  1.0
[/CIF]
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