The compound described by Rb2UI5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent I(1), two equivalent I(2), two equivalent I(3), and two equivalent I(4) atoms. U(1) is bonded to one I(1), one I(2), one I(3), and four equivalent I(4) atoms to form distorted edge-sharing UI7 pentagonal bipyramids. There are four inequivalent I sites. In the first I site, I(1) is bonded to four equivalent Rb(1) and one U(1) atom to form distorted IRb4U trigonal bipyramids that share corners with four equivalent I(4)Rb2U2 tetrahedra, corners with four equivalent I(1)Rb4U trigonal bipyramids, corners with four equivalent I(3)Rb4U trigonal bipyramids, edges with four equivalent I(4)Rb2U2 tetrahedra,  an edgeedge with one I(3)Rb4U trigonal bipyramid, and  a faceface with one I(3)Rb4U trigonal bipyramid. In the second I site, I(2) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one U(1) atom. In the third I site, I(3) is bonded to four equivalent Rb(1) and one U(1) atom to form distorted IRb4U trigonal bipyramids that share corners with eight equivalent I(4)Rb2U2 tetrahedra, corners with four equivalent I(1)Rb4U trigonal bipyramids, edges with two equivalent I(4)Rb2U2 tetrahedra,  an edgeedge with one I(1)Rb4U trigonal bipyramid, edges with two equivalent I(3)Rb4U trigonal bipyramids, and  a faceface with one I(1)Rb4U trigonal bipyramid. In the fourth I site, I(4) is bonded to two equivalent Rb(1) and two equivalent U(1) atoms to form distorted IRb2U2 tetrahedra that share corners with six equivalent I(4)Rb2U2 tetrahedra, corners with two equivalent I(1)Rb4U trigonal bipyramids, corners with four equivalent I(3)Rb4U trigonal bipyramids,  an edgeedge with one I(4)Rb2U2 tetrahedra,  an edgeedge with one I(3)Rb4U trigonal bipyramid, and edges with two equivalent I(1)Rb4U trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2UI5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.402
_cell_length_b   9.992
_cell_length_c   15.320
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1439.232
_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  0.537  0.502  0.825  1.0
  Rb  Rb1  1  0.463  0.498  0.175  1.0
  Rb  Rb2  1  0.037  0.498  0.675  1.0
  Rb  Rb3  1  0.463  0.002  0.175  1.0
  Rb  Rb4  1  0.963  0.502  0.325  1.0
  Rb  Rb5  1  0.537  0.998  0.825  1.0
  Rb  Rb6  1  0.963  0.998  0.325  1.0
  Rb  Rb7  1  0.037  0.002  0.675  1.0
  U  U8  1  0.574  0.750  0.501  1.0
  U  U9  1  0.426  0.250  0.499  1.0
  U  U10  1  0.074  0.250  0.999  1.0
  U  U11  1  0.926  0.750  0.001  1.0
  I  I12  1  0.830  0.750  0.802  1.0
  I  I13  1  0.170  0.250  0.198  1.0
  I  I14  1  0.330  0.250  0.698  1.0
  I  I15  1  0.670  0.750  0.302  1.0
  I  I16  1  0.365  0.750  0.666  1.0
  I  I17  1  0.635  0.250  0.334  1.0
  I  I18  1  0.865  0.250  0.834  1.0
  I  I19  1  0.135  0.750  0.166  1.0
  I  I20  1  0.916  0.750  0.512  1.0
  I  I21  1  0.084  0.250  0.488  1.0
  I  I22  1  0.416  0.250  0.988  1.0
  I  I23  1  0.584  0.750  0.012  1.0
  I  I24  1  0.655  0.042  0.580  1.0
  I  I25  1  0.345  0.958  0.420  1.0
  I  I26  1  0.155  0.958  0.920  1.0
  I  I27  1  0.345  0.542  0.420  1.0
  I  I28  1  0.845  0.042  0.080  1.0
  I  I29  1  0.655  0.458  0.580  1.0
  I  I30  1  0.845  0.458  0.080  1.0
  I  I31  1  0.155  0.542  0.920  1.0
[/CIF]
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The compound described by Rb2UI5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent I(1), two equivalent I(2), two equivalent I(3), and two equivalent I(4) atoms. U(1) is bonded to one I(1), one I(2), one I(3), and four equivalent I(4) atoms to form distorted edge-sharing UI7 pentagonal bipyramids. There are four inequivalent I sites. In the first I site, I(1) is bonded to four equivalent Rb(1) and one U(1) atom to form distorted IRb4U trigonal bipyramids that share corners with four equivalent I(4)Rb2U2 tetrahedra, corners with four equivalent I(1)Rb4U trigonal bipyramids, corners with four equivalent I(3)Rb4U trigonal bipyramids, edges with four equivalent I(4)Rb2U2 tetrahedra,  an edgeedge with one I(3)Rb4U trigonal bipyramid, and  a faceface with one I(3)Rb4U trigonal bipyramid. In the second I site, I(2) is bonded in a 5-coordinate geometry to four equivalent Rb(1) and one U(1) atom. In the third I site, I(3) is bonded to four equivalent Rb(1) and one U(1) atom to form distorted IRb4U trigonal bipyramids that share corners with eight equivalent I(4)Rb2U2 tetrahedra, corners with four equivalent I(1)Rb4U trigonal bipyramids, edges with two equivalent I(4)Rb2U2 tetrahedra,  an edgeedge with one I(1)Rb4U trigonal bipyramid, edges with two equivalent I(3)Rb4U trigonal bipyramids, and  a faceface with one I(1)Rb4U trigonal bipyramid. In the fourth I site, I(4) is bonded to two equivalent Rb(1) and two equivalent U(1) atoms to form distorted IRb2U2 tetrahedra that share corners with six equivalent I(4)Rb2U2 tetrahedra, corners with two equivalent I(1)Rb4U trigonal bipyramids, corners with four equivalent I(3)Rb4U trigonal bipyramids,  an edgeedge with one I(4)Rb2U2 tetrahedra,  an edgeedge with one I(3)Rb4U trigonal bipyramid, and edges with two equivalent I(1)Rb4U trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2UI5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.402
_cell_length_b   9.992
_cell_length_c   15.320
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1439.232
_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  0.537  0.502  0.825  1.0
  Rb  Rb1  1  0.463  0.498  0.175  1.0
  Rb  Rb2  1  0.037  0.498  0.675  1.0
  Rb  Rb3  1  0.463  0.002  0.175  1.0
  Rb  Rb4  1  0.963  0.502  0.325  1.0
  Rb  Rb5  1  0.537  0.998  0.825  1.0
  Rb  Rb6  1  0.963  0.998  0.325  1.0
  Rb  Rb7  1  0.037  0.002  0.675  1.0
  U  U8  1  0.574  0.750  0.501  1.0
  U  U9  1  0.426  0.250  0.499  1.0
  U  U10  1  0.074  0.250  0.999  1.0
  U  U11  1  0.926  0.750  0.001  1.0
  I  I12  1  0.830  0.750  0.802  1.0
  I  I13  1  0.170  0.250  0.198  1.0
  I  I14  1  0.330  0.250  0.698  1.0
  I  I15  1  0.670  0.750  0.302  1.0
  I  I16  1  0.365  0.750  0.666  1.0
  I  I17  1  0.635  0.250  0.334  1.0
  I  I18  1  0.865  0.250  0.834  1.0
  I  I19  1  0.135  0.750  0.166  1.0
  I  I20  1  0.916  0.750  0.512  1.0
  I  I21  1  0.084  0.250  0.488  1.0
  I  I22  1  0.416  0.250  0.988  1.0
  I  I23  1  0.584  0.750  0.012  1.0
  I  I24  1  0.655  0.042  0.580  1.0
  I  I25  1  0.345  0.958  0.420  1.0
  I  I26  1  0.155  0.958  0.920  1.0
  I  I27  1  0.345  0.542  0.420  1.0
  I  I28  1  0.845  0.042  0.080  1.0
  I  I29  1  0.655  0.458  0.580  1.0
  I  I30  1  0.845  0.458  0.080  1.0
  I  I31  1  0.155  0.542  0.920  1.0
[/CIF]
.