The crystal structure described by RuAl12 crystallizes in the cubic P-43m space group. Ru(1) is bonded in a 9-coordinate geometry to three equivalent Al(2), three equivalent Al(5), and three equivalent Al(7) atoms. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Al(2), one Al(3), one Al(4), one Al(5), two equivalent Al(6), and four equivalent Al(7) atoms. In the second Al site, Al(7) is bonded in a distorted single-bond geometry to one Ru(1), one Al(4), one Al(6), and four equivalent Al(1) atoms. In the third Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Ru(1) and three equivalent Al(1) atoms. In the fourth Al site, Al(3) is bonded in a distorted q6 geometry to three equivalent Al(1), three equivalent Al(3), three equivalent Al(4), and three equivalent Al(6) atoms. In the fifth Al site, Al(4) is bonded in a distorted q6 geometry to three equivalent Al(1), three equivalent Al(3), three equivalent Al(6), and three equivalent Al(7) atoms. In the sixth Al site, Al(5) is bonded in a 2-coordinate geometry to two equivalent Ru(1) and two equivalent Al(1) atoms. In the seventh Al site, Al(6) is bonded in a 11-coordinate geometry to one Al(6), two equivalent Al(3), two equivalent Al(4), two equivalent Al(7), and four equivalent Al(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al12Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.495
_cell_length_b   9.495
_cell_length_c   9.495
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   855.887
_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
  Al  Al0  1  0.447  0.197  0.803  1.0
  Al  Al1  1  0.197  0.197  0.553  1.0
  Al  Al2  1  0.197  0.447  0.803  1.0
  Al  Al3  1  0.447  0.803  0.197  1.0
  Al  Al4  1  0.197  0.803  0.447  1.0
  Al  Al5  1  0.197  0.553  0.197  1.0
  Al  Al6  1  0.553  0.197  0.197  1.0
  Al  Al7  1  0.803  0.197  0.447  1.0
  Al  Al8  1  0.803  0.447  0.197  1.0
  Al  Al9  1  0.553  0.803  0.803  1.0
  Al  Al10  1  0.803  0.803  0.553  1.0
  Al  Al11  1  0.803  0.553  0.803  1.0
  Al  Al12  1  0.153  0.153  0.847  1.0
  Al  Al13  1  0.153  0.847  0.153  1.0
  Al  Al14  1  0.847  0.153  0.153  1.0
  Al  Al15  1  0.847  0.847  0.847  1.0
  Al  Al16  1  0.399  0.399  0.601  1.0
  Al  Al17  1  0.399  0.601  0.399  1.0
  Al  Al18  1  0.601  0.399  0.399  1.0
  Al  Al19  1  0.601  0.601  0.601  1.0
  Al  Al20  1  0.670  0.670  0.330  1.0
  Al  Al21  1  0.670  0.330  0.670  1.0
  Al  Al22  1  0.330  0.670  0.670  1.0
  Al  Al23  1  0.330  0.330  0.330  1.0
  Al  Al24  1  0.000  0.000  0.352  1.0
  Al  Al25  1  0.000  0.648  0.000  1.0
  Al  Al26  1  0.648  0.000  0.000  1.0
  Al  Al27  1  0.000  0.000  0.648  1.0
  Al  Al28  1  0.000  0.352  0.000  1.0
  Al  Al29  1  0.352  0.000  0.000  1.0
  Al  Al30  1  0.500  0.500  0.862  1.0
  Al  Al31  1  0.500  0.138  0.500  1.0
  Al  Al32  1  0.138  0.500  0.500  1.0
  Al  Al33  1  0.500  0.500  0.138  1.0
  Al  Al34  1  0.500  0.862  0.500  1.0
  Al  Al35  1  0.862  0.500  0.500  1.0
  Al  Al36  1  0.956  0.696  0.304  1.0
  Al  Al37  1  0.696  0.696  0.044  1.0
  Al  Al38  1  0.696  0.956  0.304  1.0
  Al  Al39  1  0.956  0.304  0.696  1.0
  Al  Al40  1  0.696  0.304  0.956  1.0
  Al  Al41  1  0.696  0.044  0.696  1.0
  Al  Al42  1  0.044  0.696  0.696  1.0
  Al  Al43  1  0.304  0.696  0.956  1.0
  Al  Al44  1  0.304  0.956  0.696  1.0
  Al  Al45  1  0.044  0.304  0.304  1.0
  Al  Al46  1  0.304  0.304  0.044  1.0
  Al  Al47  1  0.304  0.044  0.304  1.0
  Ru  Ru48  1  0.883  0.883  0.117  1.0
  Ru  Ru49  1  0.883  0.117  0.883  1.0
  Ru  Ru50  1  0.117  0.883  0.883  1.0
  Ru  Ru51  1  0.117  0.117  0.117  1.0
[/CIF]
.
The crystal structure described by RuAl12 crystallizes in the cubic P-43m space group. Ru(1) is bonded in a 9-coordinate geometry to three equivalent Al(2), three equivalent Al(5), and three equivalent Al(7) atoms. There are seven inequivalent Al sites. In the first Al site, Al(1) is bonded in a 10-coordinate geometry to one Al(2), one Al(3), one Al(4), one Al(5), two equivalent Al(6), and four equivalent Al(7) atoms. In the second Al site, Al(7) is bonded in a distorted single-bond geometry to one Ru(1), one Al(4), one Al(6), and four equivalent Al(1) atoms. In the third Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Ru(1) and three equivalent Al(1) atoms. In the fourth Al site, Al(3) is bonded in a distorted q6 geometry to three equivalent Al(1), three equivalent Al(3), three equivalent Al(4), and three equivalent Al(6) atoms. In the fifth Al site, Al(4) is bonded in a distorted q6 geometry to three equivalent Al(1), three equivalent Al(3), three equivalent Al(6), and three equivalent Al(7) atoms. In the sixth Al site, Al(5) is bonded in a 2-coordinate geometry to two equivalent Ru(1) and two equivalent Al(1) atoms. In the seventh Al site, Al(6) is bonded in a 11-coordinate geometry to one Al(6), two equivalent Al(3), two equivalent Al(4), two equivalent Al(7), and four equivalent Al(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al12Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.495
_cell_length_b   9.495
_cell_length_c   9.495
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   855.887
_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
  Al  Al0  1  0.447  0.197  0.803  1.0
  Al  Al1  1  0.197  0.197  0.553  1.0
  Al  Al2  1  0.197  0.447  0.803  1.0
  Al  Al3  1  0.447  0.803  0.197  1.0
  Al  Al4  1  0.197  0.803  0.447  1.0
  Al  Al5  1  0.197  0.553  0.197  1.0
  Al  Al6  1  0.553  0.197  0.197  1.0
  Al  Al7  1  0.803  0.197  0.447  1.0
  Al  Al8  1  0.803  0.447  0.197  1.0
  Al  Al9  1  0.553  0.803  0.803  1.0
  Al  Al10  1  0.803  0.803  0.553  1.0
  Al  Al11  1  0.803  0.553  0.803  1.0
  Al  Al12  1  0.153  0.153  0.847  1.0
  Al  Al13  1  0.153  0.847  0.153  1.0
  Al  Al14  1  0.847  0.153  0.153  1.0
  Al  Al15  1  0.847  0.847  0.847  1.0
  Al  Al16  1  0.399  0.399  0.601  1.0
  Al  Al17  1  0.399  0.601  0.399  1.0
  Al  Al18  1  0.601  0.399  0.399  1.0
  Al  Al19  1  0.601  0.601  0.601  1.0
  Al  Al20  1  0.670  0.670  0.330  1.0
  Al  Al21  1  0.670  0.330  0.670  1.0
  Al  Al22  1  0.330  0.670  0.670  1.0
  Al  Al23  1  0.330  0.330  0.330  1.0
  Al  Al24  1  0.000  0.000  0.352  1.0
  Al  Al25  1  0.000  0.648  0.000  1.0
  Al  Al26  1  0.648  0.000  0.000  1.0
  Al  Al27  1  0.000  0.000  0.648  1.0
  Al  Al28  1  0.000  0.352  0.000  1.0
  Al  Al29  1  0.352  0.000  0.000  1.0
  Al  Al30  1  0.500  0.500  0.862  1.0
  Al  Al31  1  0.500  0.138  0.500  1.0
  Al  Al32  1  0.138  0.500  0.500  1.0
  Al  Al33  1  0.500  0.500  0.138  1.0
  Al  Al34  1  0.500  0.862  0.500  1.0
  Al  Al35  1  0.862  0.500  0.500  1.0
  Al  Al36  1  0.956  0.696  0.304  1.0
  Al  Al37  1  0.696  0.696  0.044  1.0
  Al  Al38  1  0.696  0.956  0.304  1.0
  Al  Al39  1  0.956  0.304  0.696  1.0
  Al  Al40  1  0.696  0.304  0.956  1.0
  Al  Al41  1  0.696  0.044  0.696  1.0
  Al  Al42  1  0.044  0.696  0.696  1.0
  Al  Al43  1  0.304  0.696  0.956  1.0
  Al  Al44  1  0.304  0.956  0.696  1.0
  Al  Al45  1  0.044  0.304  0.304  1.0
  Al  Al46  1  0.304  0.304  0.044  1.0
  Al  Al47  1  0.304  0.044  0.304  1.0
  Ru  Ru48  1  0.883  0.883  0.117  1.0
  Ru  Ru49  1  0.883  0.117  0.883  1.0
  Ru  Ru50  1  0.117  0.883  0.883  1.0
  Ru  Ru51  1  0.117  0.117  0.117  1.0
[/CIF]
.