The compound described by Er6NiI10 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 Ni(1), one I(1), one I(2), one I(4), and two equivalent I(3) atoms to form a mixture of distorted edge and corner-sharing ErNiI5 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the second Er site, Er(2) is bonded to one Ni(1), one I(1), one I(2), one I(3), and two equivalent I(5) atoms to form a mixture of distorted edge and corner-sharing ErNiI5 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. In the third Er site, Er(3) is bonded to one Ni(1), one I(2), one I(3), one I(5), and two equivalent I(4) atoms to form a mixture of distorted edge and corner-sharing ErNiI5 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. Ni(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 2-coordinate geometry to one Er(1) and one Er(2) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one Er(1), one Er(2), and one Er(3) atom. In the third I site, I(3) is bonded in a distorted see-saw-like geometry to one Er(2), one Er(3), and two equivalent Er(1) atoms. In the fourth I site, I(4) is bonded in a distorted T-shaped geometry to one Er(1) and two equivalent Er(3) atoms. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one Er(3) and two equivalent Er(2) atoms. is represented by the CIF file [CIF]
data_Er6NiI10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.587
_cell_length_b   9.526
_cell_length_c   9.536
_cell_angle_alpha   107.219
_cell_angle_beta   96.983
_cell_angle_gamma   104.740
_symmetry_Int_Tables_number   1
_cell_volume   621.956
_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  0.338  0.121  0.160  1.0
  Er  Er1  1  0.662  0.879  0.840  1.0
  Er  Er2  1  0.970  0.278  0.083  1.0
  Er  Er3  1  0.030  0.722  0.917  1.0
  Er  Er4  1  0.889  0.961  0.235  1.0
  Er  Er5  1  0.111  0.039  0.765  1.0
  Ni  Ni6  1  0.000  0.000  0.000  1.0
  I  I7  1  0.354  0.454  0.274  1.0
  I  I8  1  0.646  0.546  0.726  1.0
  I  I9  1  0.778  0.259  0.348  1.0
  I  I10  1  0.222  0.741  0.652  1.0
  I  I11  1  0.546  0.187  0.906  1.0
  I  I12  1  0.454  0.813  0.094  1.0
  I  I13  1  0.738  0.911  0.535  1.0
  I  I14  1  0.262  0.089  0.465  1.0
  I  I15  1  0.914  0.627  0.182  1.0
  I  I16  1  0.086  0.373  0.818  1.0
[/CIF]
.
The compound described by Er6NiI10 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 Ni(1), one I(1), one I(2), one I(4), and two equivalent I(3) atoms to form a mixture of distorted edge and corner-sharing ErNiI5 octahedra. The corner-sharing octahedral tilt angles range from 0-9°. In the second Er site, Er(2) is bonded to one Ni(1), one I(1), one I(2), one I(3), and two equivalent I(5) atoms to form a mixture of distorted edge and corner-sharing ErNiI5 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. In the third Er site, Er(3) is bonded to one Ni(1), one I(2), one I(3), one I(5), and two equivalent I(4) atoms to form a mixture of distorted edge and corner-sharing ErNiI5 octahedra. The corner-sharing octahedral tilt angles range from 0-13°. Ni(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 2-coordinate geometry to one Er(1) and one Er(2) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one Er(1), one Er(2), and one Er(3) atom. In the third I site, I(3) is bonded in a distorted see-saw-like geometry to one Er(2), one Er(3), and two equivalent Er(1) atoms. In the fourth I site, I(4) is bonded in a distorted T-shaped geometry to one Er(1) and two equivalent Er(3) atoms. In the fifth I site, I(5) is bonded in a distorted T-shaped geometry to one Er(3) and two equivalent Er(2) atoms. is represented by the CIF file [CIF]
data_Er6NiI10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.587
_cell_length_b   9.526
_cell_length_c   9.536
_cell_angle_alpha   107.219
_cell_angle_beta   96.983
_cell_angle_gamma   104.740
_symmetry_Int_Tables_number   1
_cell_volume   621.956
_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  0.338  0.121  0.160  1.0
  Er  Er1  1  0.662  0.879  0.840  1.0
  Er  Er2  1  0.970  0.278  0.083  1.0
  Er  Er3  1  0.030  0.722  0.917  1.0
  Er  Er4  1  0.889  0.961  0.235  1.0
  Er  Er5  1  0.111  0.039  0.765  1.0
  Ni  Ni6  1  0.000  0.000  0.000  1.0
  I  I7  1  0.354  0.454  0.274  1.0
  I  I8  1  0.646  0.546  0.726  1.0
  I  I9  1  0.778  0.259  0.348  1.0
  I  I10  1  0.222  0.741  0.652  1.0
  I  I11  1  0.546  0.187  0.906  1.0
  I  I12  1  0.454  0.813  0.094  1.0
  I  I13  1  0.738  0.911  0.535  1.0
  I  I14  1  0.262  0.089  0.465  1.0
  I  I15  1  0.914  0.627  0.182  1.0
  I  I16  1  0.086  0.373  0.818  1.0
[/CIF]
.