The crystal structure described by Nd5Rh8Sn15 crystallizes in the monoclinic Pm space group. There are five inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 13-coordinate geometry to two equivalent Rh(1), two equivalent Rh(5), one Sn(12), one Sn(4), one Sn(7), two equivalent Sn(1), two equivalent Sn(5), and two equivalent Sn(9) atoms. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one Sn(8), two equivalent Sn(10), two equivalent Sn(2), and two equivalent Sn(6) atoms. In the third Nd site, Nd(3) is bonded in a 6-coordinate geometry to two equivalent Rh(3), two equivalent Sn(11), two equivalent Sn(3), and two equivalent Sn(7) atoms. In the fourth Nd site, Nd(4) is bonded in a 6-coordinate geometry to two equivalent Rh(8), one Sn(6), two equivalent Sn(12), two equivalent Sn(4), and two equivalent Sn(8) atoms. In the fifth Nd site, Nd(5) is bonded in a 4-coordinate geometry to one Rh(3), one Rh(8), two equivalent Rh(1), and one Sn(7) atom. There are eight inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 7-coordinate geometry to two equivalent Nd(1), two equivalent Nd(5), one Sn(14), one Sn(5), one Sn(9), and two equivalent Sn(7) atoms. In the second Rh site, Rh(2) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(15), one Sn(6), two equivalent Sn(13), and two equivalent Sn(8) atoms. In the third Rh site, Rh(3) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(3), one Sn(11), one Sn(7), two equivalent Sn(14), and two equivalent Sn(5) atoms. In the fourth Rh site, Rh(4) is bonded in a 7-coordinate geometry to one Sn(12), one Sn(13), one Sn(8), two equivalent Sn(15), and two equivalent Sn(6) atoms. In the fifth Rh site, Rh(5) is bonded in a 7-coordinate geometry to two equivalent Nd(1), one Sn(1), one Sn(15), one Sn(9), two equivalent Sn(12), and two equivalent Sn(4) atoms. In the sixth Rh site, Rh(6) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(14), one Sn(2), two equivalent Sn(11), and two equivalent Sn(3) atoms. In the seventh Rh site, Rh(7) is bonded in a 7-coordinate geometry to one Sn(11), one Sn(13), one Sn(3), two equivalent Sn(10), and two equivalent Sn(2) atoms. In the eighth Rh site, Rh(8) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(4), one Sn(12), one Sn(4), two equivalent Sn(1), and two equivalent Sn(9) atoms. There are fifteen inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(5), and two equivalent Rh(8) atoms. In the second Sn site, Sn(2) is bonded in a 5-coordinate geometry to two equivalent Nd(2), one Rh(6), two equivalent Rh(7), and one Sn(6) atom. In the third Sn site, Sn(3) is bonded in a 5-coordinate geometry to two equivalent Nd(3), one Rh(7), and two equivalent Rh(6) atoms. In the fourth Sn site, Sn(4) is bonded in a 5-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(8), two equivalent Rh(5), and one Sn(8) atom. In the fifth Sn site, Sn(5) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(1), and two equivalent Rh(3) atoms. In the sixth Sn site, Sn(6) is bonded in a 10-coordinate geometry to one Nd(4), two equivalent Nd(2), one Rh(2), two equivalent Rh(4), one Sn(15), one Sn(2), and two equivalent Sn(8) atoms. In the seventh Sn site, Sn(7) is bonded in a 7-coordinate geometry to one Nd(1), one Nd(5), two equivalent Nd(3), one Rh(3), and two equivalent Rh(1) atoms. In the eighth Sn site, Sn(8) is bonded in a 10-coordinate geometry to one Nd(2), two equivalent Nd(4), one Rh(4), two equivalent Rh(2), one Sn(13), one Sn(4), and two equivalent Sn(6) atoms. In the ninth Sn site, Sn(9) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Rh(1), one Rh(5), and two equivalent Rh(8) atoms. In the tenth Sn site, Sn(10) is bonded in a 6-coordinate geometry to two equivalent Nd(2), one Rh(2), one Rh(6), and two equivalent Rh(7) atoms. In the eleventh Sn site, Sn(11) is bonded in a 6-coordinate geometry to two equivalent Nd(3), one Rh(3), one Rh(7), and two equivalent Rh(6) atoms. In the twelfth Sn site, Sn(12) is bonded in a 6-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(4), one Rh(8), and two equivalent Rh(5) atoms. In the thirteenth Sn site, Sn(13) is bonded to one Rh(4), one Rh(7), two equivalent Rh(2), and one Sn(8) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra. In the fourteenth Sn site, Sn(14) is bonded in a 4-coordinate geometry to one Rh(1), one Rh(6), and two equivalent Rh(3) atoms. In the fifteenth Sn site, Sn(15) is bonded to one Rh(2), one Rh(5), two equivalent Rh(4), and one Sn(6) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra. is represented by the CIF file [CIF]
data_Nd5Sn15Rh8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.472
_cell_length_b   7.302
_cell_length_c   18.675
_cell_angle_alpha   89.826
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   609.758
_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
  Nd  Nd0  1  0.500  0.003  0.857  1.0
  Nd  Nd1  1  0.500  0.498  0.358  1.0
  Nd  Nd2  1  0.000  0.998  0.143  1.0
  Nd  Nd3  1  0.000  0.499  0.640  1.0
  Nd  Nd4  1  0.500  0.495  0.931  1.0
  Sn  Sn5  1  0.000  0.720  0.805  1.0
  Sn  Sn6  1  0.000  0.779  0.305  1.0
  Sn  Sn7  1  0.500  0.275  0.196  1.0
  Sn  Sn8  1  0.500  0.219  0.694  1.0
  Sn  Sn9  1  0.000  0.856  0.970  1.0
  Sn  Sn10  1  0.000  0.631  0.468  1.0
  Sn  Sn11  1  0.500  0.132  0.032  1.0
  Sn  Sn12  1  0.500  0.369  0.531  1.0
  Sn  Sn13  1  0.000  0.305  0.818  1.0
  Sn  Sn14  1  0.000  0.198  0.319  1.0
  Sn  Sn15  1  0.500  0.696  0.186  1.0
  Sn  Sn16  1  0.500  0.806  0.678  1.0
  Sn  Sn17  1  0.500  0.024  0.434  1.0
  Sn  Sn18  1  0.000  0.516  0.067  1.0
  Sn  Sn19  1  0.000  0.978  0.567  1.0
  Rh  Rh20  1  0.000  0.231  0.965  1.0
  Rh  Rh21  1  0.000  0.248  0.466  1.0
  Rh  Rh22  1  0.500  0.764  0.046  1.0
  Rh  Rh23  1  0.500  0.753  0.533  1.0
  Rh  Rh24  1  0.000  0.017  0.715  1.0
  Rh  Rh25  1  0.000  0.484  0.214  1.0
  Rh  Rh26  1  0.500  0.987  0.290  1.0
  Rh  Rh27  1  0.500  0.521  0.774  1.0
[/CIF]
.
The crystal structure described by Nd5Rh8Sn15 crystallizes in the monoclinic Pm space group. There are five inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 13-coordinate geometry to two equivalent Rh(1), two equivalent Rh(5), one Sn(12), one Sn(4), one Sn(7), two equivalent Sn(1), two equivalent Sn(5), and two equivalent Sn(9) atoms. In the second Nd site, Nd(2) is bonded in a 6-coordinate geometry to one Sn(8), two equivalent Sn(10), two equivalent Sn(2), and two equivalent Sn(6) atoms. In the third Nd site, Nd(3) is bonded in a 6-coordinate geometry to two equivalent Rh(3), two equivalent Sn(11), two equivalent Sn(3), and two equivalent Sn(7) atoms. In the fourth Nd site, Nd(4) is bonded in a 6-coordinate geometry to two equivalent Rh(8), one Sn(6), two equivalent Sn(12), two equivalent Sn(4), and two equivalent Sn(8) atoms. In the fifth Nd site, Nd(5) is bonded in a 4-coordinate geometry to one Rh(3), one Rh(8), two equivalent Rh(1), and one Sn(7) atom. There are eight inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 7-coordinate geometry to two equivalent Nd(1), two equivalent Nd(5), one Sn(14), one Sn(5), one Sn(9), and two equivalent Sn(7) atoms. In the second Rh site, Rh(2) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(15), one Sn(6), two equivalent Sn(13), and two equivalent Sn(8) atoms. In the third Rh site, Rh(3) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(3), one Sn(11), one Sn(7), two equivalent Sn(14), and two equivalent Sn(5) atoms. In the fourth Rh site, Rh(4) is bonded in a 7-coordinate geometry to one Sn(12), one Sn(13), one Sn(8), two equivalent Sn(15), and two equivalent Sn(6) atoms. In the fifth Rh site, Rh(5) is bonded in a 7-coordinate geometry to two equivalent Nd(1), one Sn(1), one Sn(15), one Sn(9), two equivalent Sn(12), and two equivalent Sn(4) atoms. In the sixth Rh site, Rh(6) is bonded in a 7-coordinate geometry to one Sn(10), one Sn(14), one Sn(2), two equivalent Sn(11), and two equivalent Sn(3) atoms. In the seventh Rh site, Rh(7) is bonded in a 7-coordinate geometry to one Sn(11), one Sn(13), one Sn(3), two equivalent Sn(10), and two equivalent Sn(2) atoms. In the eighth Rh site, Rh(8) is bonded in a 9-coordinate geometry to one Nd(5), two equivalent Nd(4), one Sn(12), one Sn(4), two equivalent Sn(1), and two equivalent Sn(9) atoms. There are fifteen inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(5), and two equivalent Rh(8) atoms. In the second Sn site, Sn(2) is bonded in a 5-coordinate geometry to two equivalent Nd(2), one Rh(6), two equivalent Rh(7), and one Sn(6) atom. In the third Sn site, Sn(3) is bonded in a 5-coordinate geometry to two equivalent Nd(3), one Rh(7), and two equivalent Rh(6) atoms. In the fourth Sn site, Sn(4) is bonded in a 5-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(8), two equivalent Rh(5), and one Sn(8) atom. In the fifth Sn site, Sn(5) is bonded in a 5-coordinate geometry to two equivalent Nd(1), one Rh(1), and two equivalent Rh(3) atoms. In the sixth Sn site, Sn(6) is bonded in a 10-coordinate geometry to one Nd(4), two equivalent Nd(2), one Rh(2), two equivalent Rh(4), one Sn(15), one Sn(2), and two equivalent Sn(8) atoms. In the seventh Sn site, Sn(7) is bonded in a 7-coordinate geometry to one Nd(1), one Nd(5), two equivalent Nd(3), one Rh(3), and two equivalent Rh(1) atoms. In the eighth Sn site, Sn(8) is bonded in a 10-coordinate geometry to one Nd(2), two equivalent Nd(4), one Rh(4), two equivalent Rh(2), one Sn(13), one Sn(4), and two equivalent Sn(6) atoms. In the ninth Sn site, Sn(9) is bonded in a 6-coordinate geometry to two equivalent Nd(1), one Rh(1), one Rh(5), and two equivalent Rh(8) atoms. In the tenth Sn site, Sn(10) is bonded in a 6-coordinate geometry to two equivalent Nd(2), one Rh(2), one Rh(6), and two equivalent Rh(7) atoms. In the eleventh Sn site, Sn(11) is bonded in a 6-coordinate geometry to two equivalent Nd(3), one Rh(3), one Rh(7), and two equivalent Rh(6) atoms. In the twelfth Sn site, Sn(12) is bonded in a 6-coordinate geometry to one Nd(1), two equivalent Nd(4), one Rh(4), one Rh(8), and two equivalent Rh(5) atoms. In the thirteenth Sn site, Sn(13) is bonded to one Rh(4), one Rh(7), two equivalent Rh(2), and one Sn(8) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra. In the fourteenth Sn site, Sn(14) is bonded in a 4-coordinate geometry to one Rh(1), one Rh(6), and two equivalent Rh(3) atoms. In the fifteenth Sn site, Sn(15) is bonded to one Rh(2), one Rh(5), two equivalent Rh(4), and one Sn(6) atom to form a mixture of distorted edge and corner-sharing SnSnRh4 tetrahedra. is represented by the CIF file [CIF]
data_Nd5Sn15Rh8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.472
_cell_length_b   7.302
_cell_length_c   18.675
_cell_angle_alpha   89.826
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   609.758
_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
  Nd  Nd0  1  0.500  0.003  0.857  1.0
  Nd  Nd1  1  0.500  0.498  0.358  1.0
  Nd  Nd2  1  0.000  0.998  0.143  1.0
  Nd  Nd3  1  0.000  0.499  0.640  1.0
  Nd  Nd4  1  0.500  0.495  0.931  1.0
  Sn  Sn5  1  0.000  0.720  0.805  1.0
  Sn  Sn6  1  0.000  0.779  0.305  1.0
  Sn  Sn7  1  0.500  0.275  0.196  1.0
  Sn  Sn8  1  0.500  0.219  0.694  1.0
  Sn  Sn9  1  0.000  0.856  0.970  1.0
  Sn  Sn10  1  0.000  0.631  0.468  1.0
  Sn  Sn11  1  0.500  0.132  0.032  1.0
  Sn  Sn12  1  0.500  0.369  0.531  1.0
  Sn  Sn13  1  0.000  0.305  0.818  1.0
  Sn  Sn14  1  0.000  0.198  0.319  1.0
  Sn  Sn15  1  0.500  0.696  0.186  1.0
  Sn  Sn16  1  0.500  0.806  0.678  1.0
  Sn  Sn17  1  0.500  0.024  0.434  1.0
  Sn  Sn18  1  0.000  0.516  0.067  1.0
  Sn  Sn19  1  0.000  0.978  0.567  1.0
  Rh  Rh20  1  0.000  0.231  0.965  1.0
  Rh  Rh21  1  0.000  0.248  0.466  1.0
  Rh  Rh22  1  0.500  0.764  0.046  1.0
  Rh  Rh23  1  0.500  0.753  0.533  1.0
  Rh  Rh24  1  0.000  0.017  0.715  1.0
  Rh  Rh25  1  0.000  0.484  0.214  1.0
  Rh  Rh26  1  0.500  0.987  0.290  1.0
  Rh  Rh27  1  0.500  0.521  0.774  1.0
[/CIF]
.