The crystal structure described by NdCo2Al8 crystallizes in the orthorhombic Pbam space group. Nd(1) is bonded in a 13-coordinate geometry to one Al(4), two equivalent Al(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(6), two equivalent Al(7), and two equivalent Al(8) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Al(6), two equivalent Al(5), two equivalent Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Al(4), one Al(5), one Al(6), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. There are nine inequivalent Al sites. In the first Al site, Al(1) is bonded in a 12-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), one Al(3), one Al(7), two equivalent Al(2), two equivalent Al(4), and two equivalent Al(6) atoms. In the second Al site, Al(2) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), one Al(8), and two equivalent Al(1) atoms. In the third Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), and one Al(1) atom. In the fourth Al site, Al(4) is bonded in a distorted linear geometry to two equivalent Nd(1), two equivalent Co(2), and four equivalent Al(1) atoms. In the fifth Al site, Al(5) is bonded in a 3-coordinate geometry to one Co(2) and two equivalent Co(1) atoms. In the sixth Al site, Al(6) is bonded in a distorted linear geometry to two equivalent Nd(1), one Co(1), one Co(2), two equivalent Al(1), and two equivalent Al(8) atoms. In the seventh Al site, Al(7) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Al(1), and one Al(8) atom. In the eighth Al site, Al(8) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Al(2), one Al(7), one Al(9), and two equivalent Al(6) atoms. In the ninth Al site, Al(9) is bonded in a 4-coordinate geometry to four equivalent Co(1) and two equivalent Al(8) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd(Al4Co)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.980
_cell_length_b   12.373
_cell_length_c   14.273
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   702.910
_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
  Nd  Nd0  1  0.000  0.841  0.181  1.0
  Nd  Nd1  1  0.000  0.159  0.819  1.0
  Nd  Nd2  1  0.000  0.659  0.681  1.0
  Nd  Nd3  1  0.000  0.341  0.319  1.0
  Al  Al4  1  0.500  0.027  0.132  1.0
  Al  Al5  1  0.500  0.169  0.993  1.0
  Al  Al6  1  0.500  0.236  0.172  1.0
  Al  Al7  1  0.000  0.500  0.500  1.0
  Al  Al8  1  0.000  0.659  0.956  1.0
  Al  Al9  1  0.000  0.096  0.253  1.0
  Al  Al10  1  0.500  0.047  0.679  1.0
  Al  Al11  1  0.000  0.904  0.747  1.0
  Al  Al12  1  0.500  0.547  0.821  1.0
  Al  Al13  1  0.500  0.973  0.868  1.0
  Al  Al14  1  0.500  0.658  0.121  1.0
  Al  Al15  1  0.500  0.736  0.328  1.0
  Al  Al16  1  0.500  0.453  0.179  1.0
  Al  Al17  1  0.500  0.953  0.321  1.0
  Al  Al18  1  0.500  0.331  0.493  1.0
  Al  Al19  1  0.000  0.596  0.247  1.0
  Al  Al20  1  0.500  0.473  0.632  1.0
  Al  Al21  1  0.500  0.764  0.828  1.0
  Al  Al22  1  0.500  0.158  0.379  1.0
  Al  Al23  1  0.500  0.842  0.621  1.0
  Al  Al24  1  0.500  0.831  0.007  1.0
  Al  Al25  1  0.500  0.669  0.507  1.0
  Al  Al26  1  0.500  0.000  0.500  1.0
  Al  Al27  1  0.000  0.341  0.044  1.0
  Al  Al28  1  0.500  0.527  0.368  1.0
  Al  Al29  1  0.500  0.342  0.879  1.0
  Al  Al30  1  0.000  0.404  0.753  1.0
  Al  Al31  1  0.500  0.500  0.000  1.0
  Al  Al32  1  0.000  0.159  0.544  1.0
  Al  Al33  1  0.000  0.841  0.456  1.0
  Al  Al34  1  0.500  0.264  0.672  1.0
  Al  Al35  1  0.000  0.000  0.000  1.0
  Co  Co36  1  0.000  0.535  0.094  1.0
  Co  Co37  1  0.000  0.035  0.406  1.0
  Co  Co38  1  0.000  0.652  0.404  1.0
  Co  Co39  1  0.000  0.965  0.594  1.0
  Co  Co40  1  0.000  0.465  0.906  1.0
  Co  Co41  1  0.000  0.152  0.096  1.0
  Co  Co42  1  0.000  0.848  0.904  1.0
  Co  Co43  1  0.000  0.348  0.596  1.0
[/CIF]
.
The crystal structure described by NdCo2Al8 crystallizes in the orthorhombic Pbam space group. Nd(1) is bonded in a 13-coordinate geometry to one Al(4), two equivalent Al(1), two equivalent Al(2), two equivalent Al(3), two equivalent Al(6), two equivalent Al(7), and two equivalent Al(8) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 9-coordinate geometry to one Al(6), two equivalent Al(5), two equivalent Al(7), two equivalent Al(8), and two equivalent Al(9) atoms. In the second Co site, Co(2) is bonded in a 9-coordinate geometry to one Al(4), one Al(5), one Al(6), two equivalent Al(1), two equivalent Al(2), and two equivalent Al(3) atoms. There are nine inequivalent Al sites. In the first Al site, Al(1) is bonded in a 12-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), one Al(3), one Al(7), two equivalent Al(2), two equivalent Al(4), and two equivalent Al(6) atoms. In the second Al site, Al(2) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), one Al(8), and two equivalent Al(1) atoms. In the third Al site, Al(3) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Co(2), and one Al(1) atom. In the fourth Al site, Al(4) is bonded in a distorted linear geometry to two equivalent Nd(1), two equivalent Co(2), and four equivalent Al(1) atoms. In the fifth Al site, Al(5) is bonded in a 3-coordinate geometry to one Co(2) and two equivalent Co(1) atoms. In the sixth Al site, Al(6) is bonded in a distorted linear geometry to two equivalent Nd(1), one Co(1), one Co(2), two equivalent Al(1), and two equivalent Al(8) atoms. In the seventh Al site, Al(7) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Al(1), and one Al(8) atom. In the eighth Al site, Al(8) is bonded in a 9-coordinate geometry to two equivalent Nd(1), two equivalent Co(1), one Al(2), one Al(7), one Al(9), and two equivalent Al(6) atoms. In the ninth Al site, Al(9) is bonded in a 4-coordinate geometry to four equivalent Co(1) and two equivalent Al(8) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Nd(Al4Co)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.980
_cell_length_b   12.373
_cell_length_c   14.273
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   702.910
_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
  Nd  Nd0  1  0.000  0.841  0.181  1.0
  Nd  Nd1  1  0.000  0.159  0.819  1.0
  Nd  Nd2  1  0.000  0.659  0.681  1.0
  Nd  Nd3  1  0.000  0.341  0.319  1.0
  Al  Al4  1  0.500  0.027  0.132  1.0
  Al  Al5  1  0.500  0.169  0.993  1.0
  Al  Al6  1  0.500  0.236  0.172  1.0
  Al  Al7  1  0.000  0.500  0.500  1.0
  Al  Al8  1  0.000  0.659  0.956  1.0
  Al  Al9  1  0.000  0.096  0.253  1.0
  Al  Al10  1  0.500  0.047  0.679  1.0
  Al  Al11  1  0.000  0.904  0.747  1.0
  Al  Al12  1  0.500  0.547  0.821  1.0
  Al  Al13  1  0.500  0.973  0.868  1.0
  Al  Al14  1  0.500  0.658  0.121  1.0
  Al  Al15  1  0.500  0.736  0.328  1.0
  Al  Al16  1  0.500  0.453  0.179  1.0
  Al  Al17  1  0.500  0.953  0.321  1.0
  Al  Al18  1  0.500  0.331  0.493  1.0
  Al  Al19  1  0.000  0.596  0.247  1.0
  Al  Al20  1  0.500  0.473  0.632  1.0
  Al  Al21  1  0.500  0.764  0.828  1.0
  Al  Al22  1  0.500  0.158  0.379  1.0
  Al  Al23  1  0.500  0.842  0.621  1.0
  Al  Al24  1  0.500  0.831  0.007  1.0
  Al  Al25  1  0.500  0.669  0.507  1.0
  Al  Al26  1  0.500  0.000  0.500  1.0
  Al  Al27  1  0.000  0.341  0.044  1.0
  Al  Al28  1  0.500  0.527  0.368  1.0
  Al  Al29  1  0.500  0.342  0.879  1.0
  Al  Al30  1  0.000  0.404  0.753  1.0
  Al  Al31  1  0.500  0.500  0.000  1.0
  Al  Al32  1  0.000  0.159  0.544  1.0
  Al  Al33  1  0.000  0.841  0.456  1.0
  Al  Al34  1  0.500  0.264  0.672  1.0
  Al  Al35  1  0.000  0.000  0.000  1.0
  Co  Co36  1  0.000  0.535  0.094  1.0
  Co  Co37  1  0.000  0.035  0.406  1.0
  Co  Co38  1  0.000  0.652  0.404  1.0
  Co  Co39  1  0.000  0.965  0.594  1.0
  Co  Co40  1  0.000  0.465  0.906  1.0
  Co  Co41  1  0.000  0.152  0.096  1.0
  Co  Co42  1  0.000  0.848  0.904  1.0
  Co  Co43  1  0.000  0.348  0.596  1.0
[/CIF]
.