The material structure described by Al3Mg2 crystallizes in the tetragonal I4_1/amd space group. Mg(1) is bonded in a 11-coordinate geometry to three equivalent Mg(1), three equivalent Al(2), and five equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to five equivalent Mg(1), two equivalent Al(2), and three equivalent Al(1) atoms. In the second Al site, Al(2) is bonded in a 10-coordinate geometry to six equivalent Mg(1) and four equivalent Al(1) atoms. is represented by the CIF card [CIF]
data_Mg2Al3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.445
_cell_length_b   6.445
_cell_length_c   10.634
_cell_angle_alpha   107.640
_cell_angle_beta   107.640
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   399.051
_cell_formula_units_Z   4
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
  Mg  Mg0  1  0.293  0.517  0.587  1.0
  Mg  Mg1  1  0.293  0.069  0.587  1.0
  Mg  Mg2  1  0.319  0.043  0.087  1.0
  Mg  Mg3  1  0.957  0.681  0.913  1.0
  Mg  Mg4  1  0.957  0.233  0.913  1.0
  Mg  Mg5  1  0.767  0.043  0.087  1.0
  Mg  Mg6  1  0.931  0.707  0.413  1.0
  Mg  Mg7  1  0.483  0.707  0.413  1.0
  Al  Al8  1  0.803  0.091  0.606  1.0
  Al  Al9  1  0.803  0.516  0.606  1.0
  Al  Al10  1  0.766  0.553  0.106  1.0
  Al  Al11  1  0.447  0.234  0.894  1.0
  Al  Al12  1  0.447  0.659  0.894  1.0
  Al  Al13  1  0.341  0.553  0.106  1.0
  Al  Al14  1  0.484  0.197  0.394  1.0
  Al  Al15  1  0.909  0.197  0.394  1.0
  Al  Al16  1  0.125  0.375  0.250  1.0
  Al  Al17  1  0.125  0.875  0.250  1.0
  Al  Al18  1  0.125  0.875  0.750  1.0
  Al  Al19  1  0.625  0.875  0.750  1.0
[/CIF]
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The material structure described by Al3Mg2 crystallizes in the tetragonal I4_1/amd space group. Mg(1) is bonded in a 11-coordinate geometry to three equivalent Mg(1), three equivalent Al(2), and five equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to five equivalent Mg(1), two equivalent Al(2), and three equivalent Al(1) atoms. In the second Al site, Al(2) is bonded in a 10-coordinate geometry to six equivalent Mg(1) and four equivalent Al(1) atoms. is represented by the CIF card [CIF]
data_Mg2Al3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.445
_cell_length_b   6.445
_cell_length_c   10.634
_cell_angle_alpha   107.640
_cell_angle_beta   107.640
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   399.051
_cell_formula_units_Z   4
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
  Mg  Mg0  1  0.293  0.517  0.587  1.0
  Mg  Mg1  1  0.293  0.069  0.587  1.0
  Mg  Mg2  1  0.319  0.043  0.087  1.0
  Mg  Mg3  1  0.957  0.681  0.913  1.0
  Mg  Mg4  1  0.957  0.233  0.913  1.0
  Mg  Mg5  1  0.767  0.043  0.087  1.0
  Mg  Mg6  1  0.931  0.707  0.413  1.0
  Mg  Mg7  1  0.483  0.707  0.413  1.0
  Al  Al8  1  0.803  0.091  0.606  1.0
  Al  Al9  1  0.803  0.516  0.606  1.0
  Al  Al10  1  0.766  0.553  0.106  1.0
  Al  Al11  1  0.447  0.234  0.894  1.0
  Al  Al12  1  0.447  0.659  0.894  1.0
  Al  Al13  1  0.341  0.553  0.106  1.0
  Al  Al14  1  0.484  0.197  0.394  1.0
  Al  Al15  1  0.909  0.197  0.394  1.0
  Al  Al16  1  0.125  0.375  0.250  1.0
  Al  Al17  1  0.125  0.875  0.250  1.0
  Al  Al18  1  0.125  0.875  0.750  1.0
  Al  Al19  1  0.625  0.875  0.750  1.0
[/CIF]
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