The structure described by Rb2NdBr5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent Br(1), two equivalent Br(2), two equivalent Br(3), and two equivalent Br(4) atoms. Nd(1) is bonded to one Br(1), one Br(3), one Br(4), and four equivalent Br(2) atoms to form distorted edge-sharing NdBr7 pentagonal bipyramids. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded to four equivalent Rb(1) and one Nd(1) atom to form a mixture of distorted edge and corner-sharing BrRb4Nd trigonal bipyramids. In the second Br site, Br(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent Nd(1) atoms. In the third Br site, Br(3) is bonded to four equivalent Rb(1) and one Nd(1) atom to form a mixture of distorted edge, face, and corner-sharing BrRb4Nd trigonal bipyramids. In the fourth Br site, Br(4) is bonded to four equivalent Rb(1) and one Nd(1) atom to form a mixture of distorted edge, face, and corner-sharing BrRb4Nd trigonal bipyramids. is represented by the CIF file [CIF]
data_Rb2NdBr5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.652
_cell_length_b   9.350
_cell_length_c   13.815
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1117.671
_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  0.941  0.005  0.828  1.0
  Rb  Rb1  1  0.059  0.995  0.172  1.0
  Rb  Rb2  1  0.441  0.995  0.672  1.0
  Rb  Rb3  1  0.059  0.505  0.172  1.0
  Rb  Rb4  1  0.559  0.005  0.328  1.0
  Rb  Rb5  1  0.941  0.495  0.828  1.0
  Rb  Rb6  1  0.559  0.495  0.328  1.0
  Rb  Rb7  1  0.441  0.505  0.672  1.0
  Nd  Nd8  1  0.925  0.750  0.506  1.0
  Nd  Nd9  1  0.075  0.250  0.494  1.0
  Nd  Nd10  1  0.425  0.250  0.994  1.0
  Nd  Nd11  1  0.575  0.750  0.006  1.0
  Br  Br12  1  0.120  0.750  0.679  1.0
  Br  Br13  1  0.880  0.250  0.321  1.0
  Br  Br14  1  0.620  0.250  0.821  1.0
  Br  Br15  1  0.380  0.750  0.179  1.0
  Br  Br16  1  0.834  0.044  0.572  1.0
  Br  Br17  1  0.166  0.956  0.428  1.0
  Br  Br18  1  0.334  0.956  0.928  1.0
  Br  Br19  1  0.166  0.544  0.428  1.0
  Br  Br20  1  0.666  0.044  0.072  1.0
  Br  Br21  1  0.834  0.456  0.572  1.0
  Br  Br22  1  0.666  0.456  0.072  1.0
  Br  Br23  1  0.334  0.544  0.928  1.0
  Br  Br24  1  0.583  0.750  0.510  1.0
  Br  Br25  1  0.417  0.250  0.490  1.0
  Br  Br26  1  0.083  0.250  0.990  1.0
  Br  Br27  1  0.917  0.750  0.010  1.0
  Br  Br28  1  0.655  0.750  0.799  1.0
  Br  Br29  1  0.345  0.250  0.201  1.0
  Br  Br30  1  0.155  0.250  0.701  1.0
  Br  Br31  1  0.845  0.750  0.299  1.0
[/CIF]
.
The structure described by Rb2NdBr5 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 8-coordinate geometry to two equivalent Br(1), two equivalent Br(2), two equivalent Br(3), and two equivalent Br(4) atoms. Nd(1) is bonded to one Br(1), one Br(3), one Br(4), and four equivalent Br(2) atoms to form distorted edge-sharing NdBr7 pentagonal bipyramids. There are four inequivalent Br sites. In the first Br site, Br(1) is bonded to four equivalent Rb(1) and one Nd(1) atom to form a mixture of distorted edge and corner-sharing BrRb4Nd trigonal bipyramids. In the second Br site, Br(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1) and two equivalent Nd(1) atoms. In the third Br site, Br(3) is bonded to four equivalent Rb(1) and one Nd(1) atom to form a mixture of distorted edge, face, and corner-sharing BrRb4Nd trigonal bipyramids. In the fourth Br site, Br(4) is bonded to four equivalent Rb(1) and one Nd(1) atom to form a mixture of distorted edge, face, and corner-sharing BrRb4Nd trigonal bipyramids. is represented by the CIF file [CIF]
data_Rb2NdBr5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.652
_cell_length_b   9.350
_cell_length_c   13.815
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1117.671
_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  0.941  0.005  0.828  1.0
  Rb  Rb1  1  0.059  0.995  0.172  1.0
  Rb  Rb2  1  0.441  0.995  0.672  1.0
  Rb  Rb3  1  0.059  0.505  0.172  1.0
  Rb  Rb4  1  0.559  0.005  0.328  1.0
  Rb  Rb5  1  0.941  0.495  0.828  1.0
  Rb  Rb6  1  0.559  0.495  0.328  1.0
  Rb  Rb7  1  0.441  0.505  0.672  1.0
  Nd  Nd8  1  0.925  0.750  0.506  1.0
  Nd  Nd9  1  0.075  0.250  0.494  1.0
  Nd  Nd10  1  0.425  0.250  0.994  1.0
  Nd  Nd11  1  0.575  0.750  0.006  1.0
  Br  Br12  1  0.120  0.750  0.679  1.0
  Br  Br13  1  0.880  0.250  0.321  1.0
  Br  Br14  1  0.620  0.250  0.821  1.0
  Br  Br15  1  0.380  0.750  0.179  1.0
  Br  Br16  1  0.834  0.044  0.572  1.0
  Br  Br17  1  0.166  0.956  0.428  1.0
  Br  Br18  1  0.334  0.956  0.928  1.0
  Br  Br19  1  0.166  0.544  0.428  1.0
  Br  Br20  1  0.666  0.044  0.072  1.0
  Br  Br21  1  0.834  0.456  0.572  1.0
  Br  Br22  1  0.666  0.456  0.072  1.0
  Br  Br23  1  0.334  0.544  0.928  1.0
  Br  Br24  1  0.583  0.750  0.510  1.0
  Br  Br25  1  0.417  0.250  0.490  1.0
  Br  Br26  1  0.083  0.250  0.990  1.0
  Br  Br27  1  0.917  0.750  0.010  1.0
  Br  Br28  1  0.655  0.750  0.799  1.0
  Br  Br29  1  0.345  0.250  0.201  1.0
  Br  Br30  1  0.155  0.250  0.701  1.0
  Br  Br31  1  0.845  0.750  0.299  1.0
[/CIF]
.