The crystal structure described by RbNd2I5 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 9-coordinate geometry to two equivalent I(1), two equivalent I(3), two equivalent I(4), and three equivalent I(5) atoms. There are two inequivalent Nd sites. In the first Nd site, Nd(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. In the second Nd site, Nd(2) is bonded to one I(1), one I(3), one I(4), two equivalent I(2), and two equivalent I(5) atoms to form distorted edge-sharing NdI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Nd(2), and two equivalent Nd(1) atoms. In the second I site, I(2) is bonded to two equivalent Nd(1) and two equivalent Nd(2) atoms to form distorted INd4 tetrahedra that share corners with four equivalent I(4)Rb2Nd3 square pyramids, corners with two equivalent I(2)Nd4 tetrahedra, corners with two equivalent I(3)Rb2Nd3 trigonal bipyramids,  an edgeedge with one I(4)Rb2Nd3 square pyramid,  an edgeedge with one I(2)Nd4 tetrahedra, and edges with two equivalent I(3)Rb2Nd3 trigonal bipyramids. In the third I site, I(3) is bonded to two equivalent Rb(1), one Nd(2), and two equivalent Nd(1) atoms to form distorted IRb2Nd3 trigonal bipyramids that share corners with four equivalent I(4)Rb2Nd3 square pyramids, corners with two equivalent I(2)Nd4 tetrahedra, corners with four equivalent I(3)Rb2Nd3 trigonal bipyramids,  an edgeedge with one I(4)Rb2Nd3 square pyramid, edges with two equivalent I(2)Nd4 tetrahedra, and  a faceface with one I(4)Rb2Nd3 square pyramid. In the fourth I site, I(4) is bonded to two equivalent Rb(1), one Nd(2), and two equivalent Nd(1) atoms to form distorted IRb2Nd3 square pyramids that share corners with four equivalent I(2)Nd4 tetrahedra, corners with four equivalent I(3)Rb2Nd3 trigonal bipyramids, edges with two equivalent I(4)Rb2Nd3 square pyramids,  an edgeedge with one I(2)Nd4 tetrahedra,  an edgeedge with one I(3)Rb2Nd3 trigonal bipyramid, and  a faceface with one I(3)Rb2Nd3 trigonal bipyramid. In the fifth I site, I(5) is bonded in a 4-coordinate geometry to three equivalent Rb(1) and two equivalent Nd(2) atoms. is represented by the CIF file [CIF]
data_RbNd2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.788
_cell_length_b   9.884
_cell_length_c   14.355
_cell_angle_alpha   89.499
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1246.895
_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  0.061  0.496  0.831  1.0
  Rb  Rb1  1  0.561  0.504  0.669  1.0
  Rb  Rb2  1  0.939  0.504  0.169  1.0
  Rb  Rb3  1  0.439  0.496  0.331  1.0
  Nd  Nd4  1  0.063  0.994  0.826  1.0
  Nd  Nd5  1  0.937  0.006  0.174  1.0
  Nd  Nd6  1  0.414  0.770  0.997  1.0
  Nd  Nd7  1  0.563  0.006  0.674  1.0
  Nd  Nd8  1  0.586  0.230  0.003  1.0
  Nd  Nd9  1  0.437  0.994  0.326  1.0
  Nd  Nd10  1  0.086  0.770  0.497  1.0
  Nd  Nd11  1  0.914  0.230  0.503  1.0
  I  I12  1  0.353  0.211  0.819  1.0
  I  I13  1  0.668  0.955  0.895  1.0
  I  I14  1  0.824  0.228  0.721  1.0
  I  I15  1  0.040  0.788  0.004  1.0
  I  I16  1  0.960  0.212  0.996  1.0
  I  I17  1  0.170  0.466  0.579  1.0
  I  I18  1  0.830  0.534  0.421  1.0
  I  I19  1  0.147  0.211  0.319  1.0
  I  I20  1  0.176  0.772  0.279  1.0
  I  I21  1  0.670  0.534  0.921  1.0
  I  I22  1  0.647  0.789  0.181  1.0
  I  I23  1  0.330  0.466  0.079  1.0
  I  I24  1  0.332  0.045  0.105  1.0
  I  I25  1  0.324  0.772  0.779  1.0
  I  I26  1  0.853  0.789  0.681  1.0
  I  I27  1  0.676  0.228  0.221  1.0
  I  I28  1  0.460  0.788  0.504  1.0
  I  I29  1  0.540  0.212  0.496  1.0
  I  I30  1  0.168  0.045  0.605  1.0
  I  I31  1  0.832  0.955  0.395  1.0
[/CIF]
.
The crystal structure described by RbNd2I5 crystallizes in the monoclinic P2_1/c space group. Rb(1) is bonded in a 9-coordinate geometry to two equivalent I(1), two equivalent I(3), two equivalent I(4), and three equivalent I(5) atoms. There are two inequivalent Nd sites. In the first Nd site, Nd(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. In the second Nd site, Nd(2) is bonded to one I(1), one I(3), one I(4), two equivalent I(2), and two equivalent I(5) atoms to form distorted edge-sharing NdI7 pentagonal bipyramids. There are five inequivalent I sites. In the first I site, I(1) is bonded in a 5-coordinate geometry to two equivalent Rb(1), one Nd(2), and two equivalent Nd(1) atoms. In the second I site, I(2) is bonded to two equivalent Nd(1) and two equivalent Nd(2) atoms to form distorted INd4 tetrahedra that share corners with four equivalent I(4)Rb2Nd3 square pyramids, corners with two equivalent I(2)Nd4 tetrahedra, corners with two equivalent I(3)Rb2Nd3 trigonal bipyramids,  an edgeedge with one I(4)Rb2Nd3 square pyramid,  an edgeedge with one I(2)Nd4 tetrahedra, and edges with two equivalent I(3)Rb2Nd3 trigonal bipyramids. In the third I site, I(3) is bonded to two equivalent Rb(1), one Nd(2), and two equivalent Nd(1) atoms to form distorted IRb2Nd3 trigonal bipyramids that share corners with four equivalent I(4)Rb2Nd3 square pyramids, corners with two equivalent I(2)Nd4 tetrahedra, corners with four equivalent I(3)Rb2Nd3 trigonal bipyramids,  an edgeedge with one I(4)Rb2Nd3 square pyramid, edges with two equivalent I(2)Nd4 tetrahedra, and  a faceface with one I(4)Rb2Nd3 square pyramid. In the fourth I site, I(4) is bonded to two equivalent Rb(1), one Nd(2), and two equivalent Nd(1) atoms to form distorted IRb2Nd3 square pyramids that share corners with four equivalent I(2)Nd4 tetrahedra, corners with four equivalent I(3)Rb2Nd3 trigonal bipyramids, edges with two equivalent I(4)Rb2Nd3 square pyramids,  an edgeedge with one I(2)Nd4 tetrahedra,  an edgeedge with one I(3)Rb2Nd3 trigonal bipyramid, and  a faceface with one I(3)Rb2Nd3 trigonal bipyramid. In the fifth I site, I(5) is bonded in a 4-coordinate geometry to three equivalent Rb(1) and two equivalent Nd(2) atoms. is represented by the CIF file [CIF]
data_RbNd2I5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.788
_cell_length_b   9.884
_cell_length_c   14.355
_cell_angle_alpha   89.499
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1246.895
_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  0.061  0.496  0.831  1.0
  Rb  Rb1  1  0.561  0.504  0.669  1.0
  Rb  Rb2  1  0.939  0.504  0.169  1.0
  Rb  Rb3  1  0.439  0.496  0.331  1.0
  Nd  Nd4  1  0.063  0.994  0.826  1.0
  Nd  Nd5  1  0.937  0.006  0.174  1.0
  Nd  Nd6  1  0.414  0.770  0.997  1.0
  Nd  Nd7  1  0.563  0.006  0.674  1.0
  Nd  Nd8  1  0.586  0.230  0.003  1.0
  Nd  Nd9  1  0.437  0.994  0.326  1.0
  Nd  Nd10  1  0.086  0.770  0.497  1.0
  Nd  Nd11  1  0.914  0.230  0.503  1.0
  I  I12  1  0.353  0.211  0.819  1.0
  I  I13  1  0.668  0.955  0.895  1.0
  I  I14  1  0.824  0.228  0.721  1.0
  I  I15  1  0.040  0.788  0.004  1.0
  I  I16  1  0.960  0.212  0.996  1.0
  I  I17  1  0.170  0.466  0.579  1.0
  I  I18  1  0.830  0.534  0.421  1.0
  I  I19  1  0.147  0.211  0.319  1.0
  I  I20  1  0.176  0.772  0.279  1.0
  I  I21  1  0.670  0.534  0.921  1.0
  I  I22  1  0.647  0.789  0.181  1.0
  I  I23  1  0.330  0.466  0.079  1.0
  I  I24  1  0.332  0.045  0.105  1.0
  I  I25  1  0.324  0.772  0.779  1.0
  I  I26  1  0.853  0.789  0.681  1.0
  I  I27  1  0.676  0.228  0.221  1.0
  I  I28  1  0.460  0.788  0.504  1.0
  I  I29  1  0.540  0.212  0.496  1.0
  I  I30  1  0.168  0.045  0.605  1.0
  I  I31  1  0.832  0.955  0.395  1.0
[/CIF]
.