The material described by GdAu3Al7 crystallizes in the trigonal R-3c space group. Gd(1) is bonded in a 18-coordinate geometry to six equivalent Au(1) and twelve equivalent Al(1) atoms. Au(1) is bonded in a 9-coordinate geometry to two equivalent Gd(1), one Al(2), and six equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to two equivalent Gd(1) and three equivalent Au(1) atoms. In the second Al site, Al(2) is bonded in a trigonal planar geometry to three equivalent Au(1) atoms. is represented by the CIF file [CIF]
data_GdAl7Au3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.401
_cell_length_b   8.401
_cell_length_c   8.401
_cell_angle_alpha   57.371
_cell_angle_beta   57.371
_cell_angle_gamma   57.371
_symmetry_Int_Tables_number   1
_cell_volume   393.947
_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
  Gd  Gd0  1  0.000  0.000  0.000  1.0
  Gd  Gd1  1  0.500  0.500  0.500  1.0
  Al  Al2  1  0.932  0.147  0.331  1.0
  Al  Al3  1  0.331  0.932  0.147  1.0
  Al  Al4  1  0.147  0.331  0.932  1.0
  Al  Al5  1  0.568  0.169  0.353  1.0
  Al  Al6  1  0.353  0.568  0.169  1.0
  Al  Al7  1  0.169  0.353  0.568  1.0
  Al  Al8  1  0.068  0.853  0.669  1.0
  Al  Al9  1  0.669  0.068  0.853  1.0
  Al  Al10  1  0.750  0.750  0.750  1.0
  Al  Al11  1  0.250  0.250  0.250  1.0
  Al  Al12  1  0.831  0.647  0.432  1.0
  Al  Al13  1  0.647  0.432  0.831  1.0
  Al  Al14  1  0.432  0.831  0.647  1.0
  Al  Al15  1  0.853  0.669  0.068  1.0
  Au  Au16  1  0.250  0.573  0.927  1.0
  Au  Au17  1  0.927  0.250  0.573  1.0
  Au  Au18  1  0.573  0.927  0.250  1.0
  Au  Au19  1  0.750  0.427  0.073  1.0
  Au  Au20  1  0.073  0.750  0.427  1.0
  Au  Au21  1  0.427  0.073  0.750  1.0
[/CIF]
.
The material described by GdAu3Al7 crystallizes in the trigonal R-3c space group. Gd(1) is bonded in a 18-coordinate geometry to six equivalent Au(1) and twelve equivalent Al(1) atoms. Au(1) is bonded in a 9-coordinate geometry to two equivalent Gd(1), one Al(2), and six equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted trigonal planar geometry to two equivalent Gd(1) and three equivalent Au(1) atoms. In the second Al site, Al(2) is bonded in a trigonal planar geometry to three equivalent Au(1) atoms. is represented by the CIF file [CIF]
data_GdAl7Au3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.401
_cell_length_b   8.401
_cell_length_c   8.401
_cell_angle_alpha   57.371
_cell_angle_beta   57.371
_cell_angle_gamma   57.371
_symmetry_Int_Tables_number   1
_cell_volume   393.947
_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
  Gd  Gd0  1  0.000  0.000  0.000  1.0
  Gd  Gd1  1  0.500  0.500  0.500  1.0
  Al  Al2  1  0.932  0.147  0.331  1.0
  Al  Al3  1  0.331  0.932  0.147  1.0
  Al  Al4  1  0.147  0.331  0.932  1.0
  Al  Al5  1  0.568  0.169  0.353  1.0
  Al  Al6  1  0.353  0.568  0.169  1.0
  Al  Al7  1  0.169  0.353  0.568  1.0
  Al  Al8  1  0.068  0.853  0.669  1.0
  Al  Al9  1  0.669  0.068  0.853  1.0
  Al  Al10  1  0.750  0.750  0.750  1.0
  Al  Al11  1  0.250  0.250  0.250  1.0
  Al  Al12  1  0.831  0.647  0.432  1.0
  Al  Al13  1  0.647  0.432  0.831  1.0
  Al  Al14  1  0.432  0.831  0.647  1.0
  Al  Al15  1  0.853  0.669  0.068  1.0
  Au  Au16  1  0.250  0.573  0.927  1.0
  Au  Au17  1  0.927  0.250  0.573  1.0
  Au  Au18  1  0.573  0.927  0.250  1.0
  Au  Au19  1  0.750  0.427  0.073  1.0
  Au  Au20  1  0.073  0.750  0.427  1.0
  Au  Au21  1  0.427  0.073  0.750  1.0
[/CIF]
.