The crystal structure described by RbYbI3 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one I(1), three equivalent I(3), and four equivalent I(2) atoms. Yb(1) is bonded to one I(2), two equivalent I(3), and three equivalent I(1) atoms to form edge-sharing YbI6 octahedra. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1) and three equivalent Yb(1) atoms. In the second I site, I(2) is bonded to four equivalent Rb(1) and one Yb(1) atom to form a mixture of distorted edge and corner-sharing IRb4Yb square pyramids. In the third I site, I(3) is bonded in a 5-coordinate geometry to three equivalent Rb(1) and two equivalent Yb(1) atoms. is represented by the CIF card [CIF]
data_RbYbI3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.628
_cell_length_b   10.487
_cell_length_c   17.200
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   834.748
_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
  Rb  Rb0  1  0.750  0.572  0.178  1.0
  Rb  Rb1  1  0.250  0.428  0.822  1.0
  Rb  Rb2  1  0.250  0.928  0.678  1.0
  Rb  Rb3  1  0.750  0.072  0.322  1.0
  Yb  Yb4  1  0.750  0.333  0.554  1.0
  Yb  Yb5  1  0.750  0.833  0.946  1.0
  Yb  Yb6  1  0.250  0.167  0.054  1.0
  Yb  Yb7  1  0.250  0.667  0.446  1.0
  I  I8  1  0.250  0.020  0.896  1.0
  I  I9  1  0.750  0.206  0.712  1.0
  I  I10  1  0.750  0.706  0.788  1.0
  I  I11  1  0.250  0.666  0.011  1.0
  I  I12  1  0.250  0.294  0.212  1.0
  I  I13  1  0.750  0.334  0.989  1.0
  I  I14  1  0.250  0.520  0.604  1.0
  I  I15  1  0.750  0.834  0.511  1.0
  I  I16  1  0.750  0.980  0.104  1.0
  I  I17  1  0.750  0.480  0.396  1.0
  I  I18  1  0.250  0.166  0.489  1.0
  I  I19  1  0.250  0.794  0.288  1.0
[/CIF]
.
The crystal structure described by RbYbI3 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to one I(1), three equivalent I(3), and four equivalent I(2) atoms. Yb(1) is bonded to one I(2), two equivalent I(3), and three equivalent I(1) atoms to form edge-sharing YbI6 octahedra. There are three inequivalent I sites. In the first I site, I(1) is bonded in a distorted rectangular see-saw-like geometry to one Rb(1) and three equivalent Yb(1) atoms. In the second I site, I(2) is bonded to four equivalent Rb(1) and one Yb(1) atom to form a mixture of distorted edge and corner-sharing IRb4Yb square pyramids. In the third I site, I(3) is bonded in a 5-coordinate geometry to three equivalent Rb(1) and two equivalent Yb(1) atoms. is represented by the CIF card [CIF]
data_RbYbI3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.628
_cell_length_b   10.487
_cell_length_c   17.200
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   834.748
_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
  Rb  Rb0  1  0.750  0.572  0.178  1.0
  Rb  Rb1  1  0.250  0.428  0.822  1.0
  Rb  Rb2  1  0.250  0.928  0.678  1.0
  Rb  Rb3  1  0.750  0.072  0.322  1.0
  Yb  Yb4  1  0.750  0.333  0.554  1.0
  Yb  Yb5  1  0.750  0.833  0.946  1.0
  Yb  Yb6  1  0.250  0.167  0.054  1.0
  Yb  Yb7  1  0.250  0.667  0.446  1.0
  I  I8  1  0.250  0.020  0.896  1.0
  I  I9  1  0.750  0.206  0.712  1.0
  I  I10  1  0.750  0.706  0.788  1.0
  I  I11  1  0.250  0.666  0.011  1.0
  I  I12  1  0.250  0.294  0.212  1.0
  I  I13  1  0.750  0.334  0.989  1.0
  I  I14  1  0.250  0.520  0.604  1.0
  I  I15  1  0.750  0.834  0.511  1.0
  I  I16  1  0.750  0.980  0.104  1.0
  I  I17  1  0.750  0.480  0.396  1.0
  I  I18  1  0.250  0.166  0.489  1.0
  I  I19  1  0.250  0.794  0.288  1.0
[/CIF]
.