The structure described by Er6IrI10 crystallizes in the triclinic P-1 space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded to one Ir(1), one I(1), one I(2), one I(4), and two equivalent I(3) atoms to form a mixture of distorted corner and edge-sharing ErIrI5 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. In the second Er site, Er(2) is bonded to one Ir(1), one I(1), one I(4), one I(5), and two equivalent I(2) atoms to form a mixture of corner and edge-sharing ErIrI5 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the third Er site, Er(3) is bonded to one Ir(1), one I(1), one I(2), one I(3), and two equivalent I(5) atoms to form a mixture of corner and edge-sharing ErIrI5 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. Ir(1) is bonded in an octahedral geometry to two equivalent Er(1), two equivalent Er(2), and two equivalent Er(3) atoms. There are five inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one Er(1), one Er(2), and one Er(3) atom. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to one Er(1), one Er(3), and two equivalent Er(2) atoms. In the third I site, I(3) is bonded in a distorted T-shaped geometry to one Er(3) and two equivalent Er(1) atoms. In the fourth I site, I(4) is bonded in a distorted L-shaped geometry to one Er(1) and one Er(2) atom. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one Er(2) and two equivalent Er(3) atoms. is represented by the CIF file [CIF]
data_Er6IrI10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.636
_cell_length_b   9.544
_cell_length_c   9.645
_cell_angle_alpha   107.426
_cell_angle_beta   97.018
_cell_angle_gamma   104.718
_symmetry_Int_Tables_number   1
_cell_volume   633.467
_cell_formula_units_Z   1
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  0.530  0.722  0.418  1.0
  Er  Er1  1  0.470  0.278  0.582  1.0
  Er  Er2  1  0.150  0.874  0.333  1.0
  Er  Er3  1  0.850  0.126  0.667  1.0
  Er  Er4  1  0.614  0.041  0.258  1.0
  Er  Er5  1  0.386  0.959  0.742  1.0
  Ir  Ir6  1  0.500  0.000  0.500  1.0
  I  I7  1  0.716  0.739  0.151  1.0
  I  I8  1  0.284  0.261  0.849  1.0
  I  I9  1  0.048  0.186  0.408  1.0
  I  I10  1  0.952  0.814  0.592  1.0
  I  I11  1  0.586  0.373  0.320  1.0
  I  I12  1  0.414  0.627  0.680  1.0
  I  I13  1  0.148  0.546  0.225  1.0
  I  I14  1  0.852  0.454  0.775  1.0
  I  I15  1  0.763  0.090  0.965  1.0
  I  I16  1  0.237  0.910  0.035  1.0
[/CIF]
.
The structure described by Er6IrI10 crystallizes in the triclinic P-1 space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded to one Ir(1), one I(1), one I(2), one I(4), and two equivalent I(3) atoms to form a mixture of distorted corner and edge-sharing ErIrI5 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. In the second Er site, Er(2) is bonded to one Ir(1), one I(1), one I(4), one I(5), and two equivalent I(2) atoms to form a mixture of corner and edge-sharing ErIrI5 octahedra. The corner-sharing octahedral tilt angles range from 0-7°. In the third Er site, Er(3) is bonded to one Ir(1), one I(1), one I(2), one I(3), and two equivalent I(5) atoms to form a mixture of corner and edge-sharing ErIrI5 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. Ir(1) is bonded in an octahedral geometry to two equivalent Er(1), two equivalent Er(2), and two equivalent Er(3) atoms. There are five inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one Er(1), one Er(2), and one Er(3) atom. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to one Er(1), one Er(3), and two equivalent Er(2) atoms. In the third I site, I(3) is bonded in a distorted T-shaped geometry to one Er(3) and two equivalent Er(1) atoms. In the fourth I site, I(4) is bonded in a distorted L-shaped geometry to one Er(1) and one Er(2) atom. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one Er(2) and two equivalent Er(3) atoms. is represented by the CIF file [CIF]
data_Er6IrI10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.636
_cell_length_b   9.544
_cell_length_c   9.645
_cell_angle_alpha   107.426
_cell_angle_beta   97.018
_cell_angle_gamma   104.718
_symmetry_Int_Tables_number   1
_cell_volume   633.467
_cell_formula_units_Z   1
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  0.530  0.722  0.418  1.0
  Er  Er1  1  0.470  0.278  0.582  1.0
  Er  Er2  1  0.150  0.874  0.333  1.0
  Er  Er3  1  0.850  0.126  0.667  1.0
  Er  Er4  1  0.614  0.041  0.258  1.0
  Er  Er5  1  0.386  0.959  0.742  1.0
  Ir  Ir6  1  0.500  0.000  0.500  1.0
  I  I7  1  0.716  0.739  0.151  1.0
  I  I8  1  0.284  0.261  0.849  1.0
  I  I9  1  0.048  0.186  0.408  1.0
  I  I10  1  0.952  0.814  0.592  1.0
  I  I11  1  0.586  0.373  0.320  1.0
  I  I12  1  0.414  0.627  0.680  1.0
  I  I13  1  0.148  0.546  0.225  1.0
  I  I14  1  0.852  0.454  0.775  1.0
  I  I15  1  0.763  0.090  0.965  1.0
  I  I16  1  0.237  0.910  0.035  1.0
[/CIF]
.