The material described by Er5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to four equivalent Ir(2) atoms to form ErIr4 tetrahedra that share corners with sixteen equivalent Er(2)Ir5 trigonal bipyramids, edges with two equivalent Er(1)Ir4 tetrahedra, and edges with four equivalent Er(2)Ir5 trigonal bipyramids. In the second Er site, Er(2) is bonded to two equivalent Ir(1) and three equivalent Ir(2) atoms to form distorted ErIr5 trigonal bipyramids that share corners with four equivalent Er(1)Ir4 tetrahedra, corners with eleven equivalent Er(2)Ir5 trigonal bipyramids,  an edgeedge with one Er(1)Ir4 tetrahedra, edges with six equivalent Er(2)Ir5 trigonal bipyramids, and faces with two equivalent Er(2)Ir5 trigonal bipyramids. There are two inequivalent Ir sites. In the first Ir site, Ir(2) is bonded in a 8-coordinate geometry to two equivalent Er(1) and six equivalent Er(2) atoms. In the second Ir site, Ir(1) is bonded in a 8-coordinate geometry to eight equivalent Er(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er5Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.296
_cell_length_b   10.717
_cell_length_c   10.717
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   723.188
_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
  Er  Er0  1  0.500  0.500  0.500  1.0
  Er  Er1  1  0.000  0.500  0.500  1.0
  Er  Er2  1  0.500  0.000  0.000  1.0
  Er  Er3  1  0.000  0.000  0.000  1.0
  Er  Er4  1  0.382  0.588  0.792  1.0
  Er  Er5  1  0.882  0.588  0.208  1.0
  Er  Er6  1  0.618  0.912  0.708  1.0
  Er  Er7  1  0.118  0.088  0.708  1.0
  Er  Er8  1  0.382  0.412  0.208  1.0
  Er  Er9  1  0.882  0.412  0.792  1.0
  Er  Er10  1  0.618  0.088  0.292  1.0
  Er  Er11  1  0.118  0.912  0.292  1.0
  Er  Er12  1  0.618  0.792  0.412  1.0
  Er  Er13  1  0.118  0.208  0.412  1.0
  Er  Er14  1  0.382  0.292  0.912  1.0
  Er  Er15  1  0.882  0.708  0.912  1.0
  Er  Er16  1  0.618  0.208  0.588  1.0
  Er  Er17  1  0.118  0.792  0.588  1.0
  Er  Er18  1  0.382  0.708  0.088  1.0
  Er  Er19  1  0.882  0.292  0.088  1.0
  Ir  Ir20  1  0.372  0.000  0.500  1.0
  Ir  Ir21  1  0.872  0.000  0.500  1.0
  Ir  Ir22  1  0.628  0.500  0.000  1.0
  Ir  Ir23  1  0.128  0.500  0.000  1.0
  Ir  Ir24  1  0.750  0.654  0.654  1.0
  Ir  Ir25  1  0.250  0.654  0.346  1.0
  Ir  Ir26  1  0.250  0.846  0.846  1.0
  Ir  Ir27  1  0.750  0.154  0.846  1.0
  Ir  Ir28  1  0.750  0.346  0.346  1.0
  Ir  Ir29  1  0.250  0.346  0.654  1.0
  Ir  Ir30  1  0.250  0.154  0.154  1.0
  Ir  Ir31  1  0.750  0.846  0.154  1.0
[/CIF]
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The material described by Er5Ir3 crystallizes in the tetragonal P4/ncc space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded to four equivalent Ir(2) atoms to form ErIr4 tetrahedra that share corners with sixteen equivalent Er(2)Ir5 trigonal bipyramids, edges with two equivalent Er(1)Ir4 tetrahedra, and edges with four equivalent Er(2)Ir5 trigonal bipyramids. In the second Er site, Er(2) is bonded to two equivalent Ir(1) and three equivalent Ir(2) atoms to form distorted ErIr5 trigonal bipyramids that share corners with four equivalent Er(1)Ir4 tetrahedra, corners with eleven equivalent Er(2)Ir5 trigonal bipyramids,  an edgeedge with one Er(1)Ir4 tetrahedra, edges with six equivalent Er(2)Ir5 trigonal bipyramids, and faces with two equivalent Er(2)Ir5 trigonal bipyramids. There are two inequivalent Ir sites. In the first Ir site, Ir(2) is bonded in a 8-coordinate geometry to two equivalent Er(1) and six equivalent Er(2) atoms. In the second Ir site, Ir(1) is bonded in a 8-coordinate geometry to eight equivalent Er(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er5Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.296
_cell_length_b   10.717
_cell_length_c   10.717
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   723.188
_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
  Er  Er0  1  0.500  0.500  0.500  1.0
  Er  Er1  1  0.000  0.500  0.500  1.0
  Er  Er2  1  0.500  0.000  0.000  1.0
  Er  Er3  1  0.000  0.000  0.000  1.0
  Er  Er4  1  0.382  0.588  0.792  1.0
  Er  Er5  1  0.882  0.588  0.208  1.0
  Er  Er6  1  0.618  0.912  0.708  1.0
  Er  Er7  1  0.118  0.088  0.708  1.0
  Er  Er8  1  0.382  0.412  0.208  1.0
  Er  Er9  1  0.882  0.412  0.792  1.0
  Er  Er10  1  0.618  0.088  0.292  1.0
  Er  Er11  1  0.118  0.912  0.292  1.0
  Er  Er12  1  0.618  0.792  0.412  1.0
  Er  Er13  1  0.118  0.208  0.412  1.0
  Er  Er14  1  0.382  0.292  0.912  1.0
  Er  Er15  1  0.882  0.708  0.912  1.0
  Er  Er16  1  0.618  0.208  0.588  1.0
  Er  Er17  1  0.118  0.792  0.588  1.0
  Er  Er18  1  0.382  0.708  0.088  1.0
  Er  Er19  1  0.882  0.292  0.088  1.0
  Ir  Ir20  1  0.372  0.000  0.500  1.0
  Ir  Ir21  1  0.872  0.000  0.500  1.0
  Ir  Ir22  1  0.628  0.500  0.000  1.0
  Ir  Ir23  1  0.128  0.500  0.000  1.0
  Ir  Ir24  1  0.750  0.654  0.654  1.0
  Ir  Ir25  1  0.250  0.654  0.346  1.0
  Ir  Ir26  1  0.250  0.846  0.846  1.0
  Ir  Ir27  1  0.750  0.154  0.846  1.0
  Ir  Ir28  1  0.750  0.346  0.346  1.0
  Ir  Ir29  1  0.250  0.346  0.654  1.0
  Ir  Ir30  1  0.250  0.154  0.154  1.0
  Ir  Ir31  1  0.750  0.846  0.154  1.0
[/CIF]
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