The compound described by Y5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent Ir(2) and three equivalent Ir(1) atoms to form distorted YIr5 trigonal bipyramids that share corners with four equivalent Y(2)Ir4 tetrahedra, corners with eleven equivalent Y(1)Ir5 trigonal bipyramids,  an edgeedge with one Y(2)Ir4 tetrahedra, edges with six equivalent Y(1)Ir5 trigonal bipyramids, and faces with two equivalent Y(1)Ir5 trigonal bipyramids. In the second Y site, Y(2) is bonded to four equivalent Ir(1) atoms to form YIr4 tetrahedra that share corners with sixteen equivalent Y(1)Ir5 trigonal bipyramids, edges with two equivalent Y(2)Ir4 tetrahedra, and edges with four equivalent Y(1)Ir5 trigonal bipyramids. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to two equivalent Y(2) and six equivalent Y(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to eight equivalent Y(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y5Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.390
_cell_length_b   10.880
_cell_length_c   10.881
_cell_angle_alpha   90.000
_cell_angle_beta   90.001
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   756.443
_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
  Y  Y0  1  0.384  0.838  0.542  1.0
  Y  Y1  1  0.884  0.662  0.542  1.0
  Y  Y2  1  0.884  0.838  0.958  1.0
  Y  Y3  1  0.384  0.662  0.958  1.0
  Y  Y4  1  0.884  0.542  0.838  1.0
  Y  Y5  1  0.384  0.958  0.838  1.0
  Y  Y6  1  0.384  0.542  0.662  1.0
  Y  Y7  1  0.884  0.958  0.662  1.0
  Y  Y8  1  0.616  0.162  0.458  1.0
  Y  Y9  1  0.116  0.338  0.458  1.0
  Y  Y10  1  0.116  0.162  0.042  1.0
  Y  Y11  1  0.616  0.338  0.042  1.0
  Y  Y12  1  0.116  0.458  0.162  1.0
  Y  Y13  1  0.616  0.042  0.162  1.0
  Y  Y14  1  0.616  0.458  0.338  1.0
  Y  Y15  1  0.116  0.042  0.338  1.0
  Y  Y16  1  0.500  0.750  0.250  1.0
  Y  Y17  1  0.000  0.750  0.250  1.0
  Y  Y18  1  0.000  0.250  0.750  1.0
  Y  Y19  1  0.500  0.250  0.750  1.0
  Ir  Ir20  1  0.250  0.903  0.097  1.0
  Ir  Ir21  1  0.750  0.597  0.097  1.0
  Ir  Ir22  1  0.750  0.903  0.403  1.0
  Ir  Ir23  1  0.250  0.597  0.403  1.0
  Ir  Ir24  1  0.750  0.097  0.903  1.0
  Ir  Ir25  1  0.250  0.403  0.903  1.0
  Ir  Ir26  1  0.250  0.097  0.597  1.0
  Ir  Ir27  1  0.750  0.403  0.597  1.0
  Ir  Ir28  1  0.130  0.750  0.750  1.0
  Ir  Ir29  1  0.630  0.750  0.750  1.0
  Ir  Ir30  1  0.870  0.250  0.250  1.0
  Ir  Ir31  1  0.370  0.250  0.250  1.0
[/CIF]
.
The compound described by Y5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded to two equivalent Ir(2) and three equivalent Ir(1) atoms to form distorted YIr5 trigonal bipyramids that share corners with four equivalent Y(2)Ir4 tetrahedra, corners with eleven equivalent Y(1)Ir5 trigonal bipyramids,  an edgeedge with one Y(2)Ir4 tetrahedra, edges with six equivalent Y(1)Ir5 trigonal bipyramids, and faces with two equivalent Y(1)Ir5 trigonal bipyramids. In the second Y site, Y(2) is bonded to four equivalent Ir(1) atoms to form YIr4 tetrahedra that share corners with sixteen equivalent Y(1)Ir5 trigonal bipyramids, edges with two equivalent Y(2)Ir4 tetrahedra, and edges with four equivalent Y(1)Ir5 trigonal bipyramids. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to two equivalent Y(2) and six equivalent Y(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to eight equivalent Y(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Y5Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.390
_cell_length_b   10.880
_cell_length_c   10.881
_cell_angle_alpha   90.000
_cell_angle_beta   90.001
_cell_angle_gamma   90.001
_symmetry_Int_Tables_number   1
_cell_volume   756.443
_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
  Y  Y0  1  0.384  0.838  0.542  1.0
  Y  Y1  1  0.884  0.662  0.542  1.0
  Y  Y2  1  0.884  0.838  0.958  1.0
  Y  Y3  1  0.384  0.662  0.958  1.0
  Y  Y4  1  0.884  0.542  0.838  1.0
  Y  Y5  1  0.384  0.958  0.838  1.0
  Y  Y6  1  0.384  0.542  0.662  1.0
  Y  Y7  1  0.884  0.958  0.662  1.0
  Y  Y8  1  0.616  0.162  0.458  1.0
  Y  Y9  1  0.116  0.338  0.458  1.0
  Y  Y10  1  0.116  0.162  0.042  1.0
  Y  Y11  1  0.616  0.338  0.042  1.0
  Y  Y12  1  0.116  0.458  0.162  1.0
  Y  Y13  1  0.616  0.042  0.162  1.0
  Y  Y14  1  0.616  0.458  0.338  1.0
  Y  Y15  1  0.116  0.042  0.338  1.0
  Y  Y16  1  0.500  0.750  0.250  1.0
  Y  Y17  1  0.000  0.750  0.250  1.0
  Y  Y18  1  0.000  0.250  0.750  1.0
  Y  Y19  1  0.500  0.250  0.750  1.0
  Ir  Ir20  1  0.250  0.903  0.097  1.0
  Ir  Ir21  1  0.750  0.597  0.097  1.0
  Ir  Ir22  1  0.750  0.903  0.403  1.0
  Ir  Ir23  1  0.250  0.597  0.403  1.0
  Ir  Ir24  1  0.750  0.097  0.903  1.0
  Ir  Ir25  1  0.250  0.403  0.903  1.0
  Ir  Ir26  1  0.250  0.097  0.597  1.0
  Ir  Ir27  1  0.750  0.403  0.597  1.0
  Ir  Ir28  1  0.130  0.750  0.750  1.0
  Ir  Ir29  1  0.630  0.750  0.750  1.0
  Ir  Ir30  1  0.870  0.250  0.250  1.0
  Ir  Ir31  1  0.370  0.250  0.250  1.0
[/CIF]
.