The crystal structure described by NdNi9In2 crystallizes in the tetragonal P4/mbm space group. Nd(1) is bonded in a 20-coordinate geometry to eight equivalent Ni(1), eight equivalent Ni(2), and four equivalent In(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Nd(1), one Ni(3), two equivalent Ni(1), four equivalent Ni(2), and three equivalent In(1) atoms to form NiNd2In3Ni7 cuboctahedra that share  a cornercorner with one Ni(3)In4Ni8 cuboctahedra, corners with six equivalent Ni(2)Nd2In2Ni8 cuboctahedra, corners with eleven equivalent Ni(1)Nd2In3Ni7 cuboctahedra, edges with four equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with five equivalent Ni(1)Nd2In3Ni7 cuboctahedra, faces with three equivalent Ni(3)In4Ni8 cuboctahedra, faces with seven equivalent Ni(1)Nd2In3Ni7 cuboctahedra, and faces with ten equivalent Ni(2)Nd2In2Ni8 cuboctahedra. In the second Ni site, Ni(2) is bonded to two equivalent Nd(1), one Ni(3), three equivalent Ni(2), four equivalent Ni(1), and two equivalent In(1) atoms to form distorted NiNd2In2Ni8 cuboctahedra that share corners with three equivalent Ni(3)In4Ni8 cuboctahedra, corners with six equivalent Ni(1)Nd2In3Ni7 cuboctahedra, corners with eleven equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with two equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with four equivalent Ni(1)Nd2In3Ni7 cuboctahedra, faces with two equivalent Ni(3)In4Ni8 cuboctahedra, faces with seven equivalent Ni(2)Nd2In2Ni8 cuboctahedra, and faces with ten equivalent Ni(1)Nd2In3Ni7 cuboctahedra. In the third Ni site, Ni(3) is bonded to four equivalent Ni(1), four equivalent Ni(2), and four equivalent In(1) atoms to form NiIn4Ni8 cuboctahedra that share corners with four equivalent Ni(1)Nd2In3Ni7 cuboctahedra, corners with twelve equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with two equivalent Ni(3)In4Ni8 cuboctahedra, faces with eight equivalent Ni(2)Nd2In2Ni8 cuboctahedra, and faces with twelve equivalent Ni(1)Nd2In3Ni7 cuboctahedra. In(1) is bonded in a 15-coordinate geometry to two equivalent Nd(1), two equivalent Ni(3), four equivalent Ni(2), six equivalent Ni(1), and one In(1) atom. is represented by the CIF file [CIF]
data_NdIn2Ni9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.861
_cell_length_b   8.281
_cell_length_c   8.281
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   333.349
_cell_formula_units_Z   2
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  0.000  0.500  0.500  1.0
  Nd  Nd1  1  0.000  0.000  0.000  1.0
  In  In2  1  0.000  0.624  0.124  1.0
  In  In3  1  0.000  0.376  0.876  1.0
  In  In4  1  0.000  0.876  0.624  1.0
  In  In5  1  0.000  0.124  0.376  1.0
  Ni  Ni6  1  0.752  0.177  0.677  1.0
  Ni  Ni7  1  0.752  0.823  0.323  1.0
  Ni  Ni8  1  0.752  0.323  0.177  1.0
  Ni  Ni9  1  0.752  0.677  0.823  1.0
  Ni  Ni10  1  0.248  0.823  0.323  1.0
  Ni  Ni11  1  0.248  0.177  0.677  1.0
  Ni  Ni12  1  0.248  0.677  0.823  1.0
  Ni  Ni13  1  0.248  0.323  0.177  1.0
  Ni  Ni14  1  0.500  0.709  0.564  1.0
  Ni  Ni15  1  0.500  0.291  0.436  1.0
  Ni  Ni16  1  0.500  0.791  0.064  1.0
  Ni  Ni17  1  0.500  0.209  0.936  1.0
  Ni  Ni18  1  0.500  0.564  0.291  1.0
  Ni  Ni19  1  0.500  0.436  0.709  1.0
  Ni  Ni20  1  0.500  0.064  0.209  1.0
  Ni  Ni21  1  0.500  0.936  0.791  1.0
  Ni  Ni22  1  0.500  0.000  0.500  1.0
  Ni  Ni23  1  0.500  0.500  0.000  1.0
[/CIF]
.
The crystal structure described by NdNi9In2 crystallizes in the tetragonal P4/mbm space group. Nd(1) is bonded in a 20-coordinate geometry to eight equivalent Ni(1), eight equivalent Ni(2), and four equivalent In(1) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent Nd(1), one Ni(3), two equivalent Ni(1), four equivalent Ni(2), and three equivalent In(1) atoms to form NiNd2In3Ni7 cuboctahedra that share  a cornercorner with one Ni(3)In4Ni8 cuboctahedra, corners with six equivalent Ni(2)Nd2In2Ni8 cuboctahedra, corners with eleven equivalent Ni(1)Nd2In3Ni7 cuboctahedra, edges with four equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with five equivalent Ni(1)Nd2In3Ni7 cuboctahedra, faces with three equivalent Ni(3)In4Ni8 cuboctahedra, faces with seven equivalent Ni(1)Nd2In3Ni7 cuboctahedra, and faces with ten equivalent Ni(2)Nd2In2Ni8 cuboctahedra. In the second Ni site, Ni(2) is bonded to two equivalent Nd(1), one Ni(3), three equivalent Ni(2), four equivalent Ni(1), and two equivalent In(1) atoms to form distorted NiNd2In2Ni8 cuboctahedra that share corners with three equivalent Ni(3)In4Ni8 cuboctahedra, corners with six equivalent Ni(1)Nd2In3Ni7 cuboctahedra, corners with eleven equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with two equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with four equivalent Ni(1)Nd2In3Ni7 cuboctahedra, faces with two equivalent Ni(3)In4Ni8 cuboctahedra, faces with seven equivalent Ni(2)Nd2In2Ni8 cuboctahedra, and faces with ten equivalent Ni(1)Nd2In3Ni7 cuboctahedra. In the third Ni site, Ni(3) is bonded to four equivalent Ni(1), four equivalent Ni(2), and four equivalent In(1) atoms to form NiIn4Ni8 cuboctahedra that share corners with four equivalent Ni(1)Nd2In3Ni7 cuboctahedra, corners with twelve equivalent Ni(2)Nd2In2Ni8 cuboctahedra, edges with two equivalent Ni(3)In4Ni8 cuboctahedra, faces with eight equivalent Ni(2)Nd2In2Ni8 cuboctahedra, and faces with twelve equivalent Ni(1)Nd2In3Ni7 cuboctahedra. In(1) is bonded in a 15-coordinate geometry to two equivalent Nd(1), two equivalent Ni(3), four equivalent Ni(2), six equivalent Ni(1), and one In(1) atom. is represented by the CIF file [CIF]
data_NdIn2Ni9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.861
_cell_length_b   8.281
_cell_length_c   8.281
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   333.349
_cell_formula_units_Z   2
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  0.000  0.500  0.500  1.0
  Nd  Nd1  1  0.000  0.000  0.000  1.0
  In  In2  1  0.000  0.624  0.124  1.0
  In  In3  1  0.000  0.376  0.876  1.0
  In  In4  1  0.000  0.876  0.624  1.0
  In  In5  1  0.000  0.124  0.376  1.0
  Ni  Ni6  1  0.752  0.177  0.677  1.0
  Ni  Ni7  1  0.752  0.823  0.323  1.0
  Ni  Ni8  1  0.752  0.323  0.177  1.0
  Ni  Ni9  1  0.752  0.677  0.823  1.0
  Ni  Ni10  1  0.248  0.823  0.323  1.0
  Ni  Ni11  1  0.248  0.177  0.677  1.0
  Ni  Ni12  1  0.248  0.677  0.823  1.0
  Ni  Ni13  1  0.248  0.323  0.177  1.0
  Ni  Ni14  1  0.500  0.709  0.564  1.0
  Ni  Ni15  1  0.500  0.291  0.436  1.0
  Ni  Ni16  1  0.500  0.791  0.064  1.0
  Ni  Ni17  1  0.500  0.209  0.936  1.0
  Ni  Ni18  1  0.500  0.564  0.291  1.0
  Ni  Ni19  1  0.500  0.436  0.709  1.0
  Ni  Ni20  1  0.500  0.064  0.209  1.0
  Ni  Ni21  1  0.500  0.936  0.791  1.0
  Ni  Ni22  1  0.500  0.000  0.500  1.0
  Ni  Ni23  1  0.500  0.500  0.000  1.0
[/CIF]
.