The material structure described by Ho2(IrAl3)3 crystallizes in the orthorhombic Cmcm space group. Ho(1) is bonded in a 17-coordinate geometry to two equivalent Ir(2), four equivalent Ir(1), one Al(1), two equivalent Al(3), two equivalent Al(4), and six equivalent Al(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to four equivalent Ho(1), two equivalent Al(3), two equivalent Al(4), and four equivalent Al(2) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to four equivalent Ho(1), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(2) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Ho(1) and two equivalent Ir(2) atoms. In the second Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Ho(1), one Ir(2), and two equivalent Ir(1) atoms. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to two equivalent Ho(1), one Ir(2), and two equivalent Ir(1) atoms. In the fourth Al site, Al(4) is bonded in a 2-coordinate geometry to two equivalent Ho(1) and two equivalent Ir(1) atoms. is represented by the CIF card [CIF]
data_Ho2(Al3Ir)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.493
_cell_length_b   7.493
_cell_length_c   9.410
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.451
_symmetry_Int_Tables_number   1
_cell_volume   459.994
_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
  Ho  Ho0  1  0.995  0.672  0.250  1.0
  Ho  Ho1  1  0.005  0.328  0.750  1.0
  Ho  Ho2  1  0.672  0.995  0.250  1.0
  Ho  Ho3  1  0.328  0.005  0.750  1.0
  Al  Al4  1  0.130  0.130  0.250  1.0
  Al  Al5  1  0.870  0.870  0.750  1.0
  Al  Al6  1  0.001  0.336  0.074  1.0
  Al  Al7  1  0.999  0.664  0.926  1.0
  Al  Al8  1  0.999  0.664  0.574  1.0
  Al  Al9  1  0.336  0.001  0.426  1.0
  Al  Al10  1  0.001  0.336  0.426  1.0
  Al  Al11  1  0.664  0.999  0.574  1.0
  Al  Al12  1  0.664  0.999  0.926  1.0
  Al  Al13  1  0.336  0.001  0.074  1.0
  Al  Al14  1  0.334  0.334  0.551  1.0
  Al  Al15  1  0.666  0.666  0.449  1.0
  Al  Al16  1  0.666  0.666  0.051  1.0
  Al  Al17  1  0.334  0.334  0.949  1.0
  Al  Al18  1  0.340  0.549  0.250  1.0
  Al  Al19  1  0.660  0.451  0.750  1.0
  Al  Al20  1  0.549  0.340  0.250  1.0
  Al  Al21  1  0.451  0.660  0.750  1.0
  Ir  Ir22  1  0.672  0.328  0.000  1.0
  Ir  Ir23  1  0.328  0.672  0.000  1.0
  Ir  Ir24  1  0.328  0.672  0.500  1.0
  Ir  Ir25  1  0.672  0.328  0.500  1.0
  Ir  Ir26  1  0.000  0.000  0.000  1.0
  Ir  Ir27  1  0.000  0.000  0.500  1.0
[/CIF]
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The material structure described by Ho2(IrAl3)3 crystallizes in the orthorhombic Cmcm space group. Ho(1) is bonded in a 17-coordinate geometry to two equivalent Ir(2), four equivalent Ir(1), one Al(1), two equivalent Al(3), two equivalent Al(4), and six equivalent Al(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to four equivalent Ho(1), two equivalent Al(3), two equivalent Al(4), and four equivalent Al(2) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to four equivalent Ho(1), two equivalent Al(1), two equivalent Al(3), and four equivalent Al(2) atoms. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded in a 2-coordinate geometry to two equivalent Ho(1) and two equivalent Ir(2) atoms. In the second Al site, Al(2) is bonded in a 3-coordinate geometry to three equivalent Ho(1), one Ir(2), and two equivalent Ir(1) atoms. In the third Al site, Al(3) is bonded in a 3-coordinate geometry to two equivalent Ho(1), one Ir(2), and two equivalent Ir(1) atoms. In the fourth Al site, Al(4) is bonded in a 2-coordinate geometry to two equivalent Ho(1) and two equivalent Ir(1) atoms. is represented by the CIF card [CIF]
data_Ho2(Al3Ir)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.493
_cell_length_b   7.493
_cell_length_c   9.410
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.451
_symmetry_Int_Tables_number   1
_cell_volume   459.994
_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
  Ho  Ho0  1  0.995  0.672  0.250  1.0
  Ho  Ho1  1  0.005  0.328  0.750  1.0
  Ho  Ho2  1  0.672  0.995  0.250  1.0
  Ho  Ho3  1  0.328  0.005  0.750  1.0
  Al  Al4  1  0.130  0.130  0.250  1.0
  Al  Al5  1  0.870  0.870  0.750  1.0
  Al  Al6  1  0.001  0.336  0.074  1.0
  Al  Al7  1  0.999  0.664  0.926  1.0
  Al  Al8  1  0.999  0.664  0.574  1.0
  Al  Al9  1  0.336  0.001  0.426  1.0
  Al  Al10  1  0.001  0.336  0.426  1.0
  Al  Al11  1  0.664  0.999  0.574  1.0
  Al  Al12  1  0.664  0.999  0.926  1.0
  Al  Al13  1  0.336  0.001  0.074  1.0
  Al  Al14  1  0.334  0.334  0.551  1.0
  Al  Al15  1  0.666  0.666  0.449  1.0
  Al  Al16  1  0.666  0.666  0.051  1.0
  Al  Al17  1  0.334  0.334  0.949  1.0
  Al  Al18  1  0.340  0.549  0.250  1.0
  Al  Al19  1  0.660  0.451  0.750  1.0
  Al  Al20  1  0.549  0.340  0.250  1.0
  Al  Al21  1  0.451  0.660  0.750  1.0
  Ir  Ir22  1  0.672  0.328  0.000  1.0
  Ir  Ir23  1  0.328  0.672  0.000  1.0
  Ir  Ir24  1  0.328  0.672  0.500  1.0
  Ir  Ir25  1  0.672  0.328  0.500  1.0
  Ir  Ir26  1  0.000  0.000  0.000  1.0
  Ir  Ir27  1  0.000  0.000  0.500  1.0
[/CIF]
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