The crystal structure described by Al15Ge4Ni3 crystallizes in the cubic I-43m space group. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a body-centered cubic geometry to four equivalent Al(2) and four equivalent Al(3) atoms. In the second Ni site, Ni(1) is bonded in a body-centered cubic geometry to four equivalent Al(2) and four equivalent Al(3) atoms. In the third Ni site, Ni(1) is bonded in a body-centered cubic geometry to four equivalent Al(2) and four equivalent Al(3) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ge(1) and two equivalent Ge(2) atoms. In the second Al site, Al(2) is bonded in a distorted trigonal planar geometry to two Ni(1,1) and one Ge(2) atom. In the third Al site, Al(3) is bonded in a distorted trigonal planar geometry to two Ni(1,1) and one Ge(1) atom. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(3) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(2) atoms. In the third Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(2) atoms. In the fourth Ge site, Ge(1) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al15Ni3Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.882
_cell_length_b   9.882
_cell_length_c   9.882
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   742.797
_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
  Al  Al0  1  0.000  0.809  0.809  1.0
  Al  Al1  1  0.191  0.000  0.191  1.0
  Al  Al2  1  0.191  0.191  0.000  1.0
  Al  Al3  1  0.000  0.191  0.191  1.0
  Al  Al4  1  0.809  0.000  0.809  1.0
  Al  Al5  1  0.809  0.809  0.000  1.0
  Al  Al6  1  0.755  0.478  0.000  1.0
  Al  Al7  1  0.276  0.522  0.522  1.0
  Al  Al8  1  0.755  0.000  0.478  1.0
  Al  Al9  1  0.478  0.755  0.000  1.0
  Al  Al10  1  0.000  0.755  0.478  1.0
  Al  Al11  1  0.522  0.276  0.522  1.0
  Al  Al12  1  0.522  0.522  0.276  1.0
  Al  Al13  1  0.000  0.478  0.755  1.0
  Al  Al14  1  0.478  0.000  0.755  1.0
  Al  Al15  1  0.245  0.245  0.724  1.0
  Al  Al16  1  0.724  0.245  0.245  1.0
  Al  Al17  1  0.245  0.724  0.245  1.0
  Al  Al18  1  0.491  0.275  0.000  1.0
  Al  Al19  1  0.216  0.725  0.725  1.0
  Al  Al20  1  0.491  0.000  0.275  1.0
  Al  Al21  1  0.275  0.491  0.000  1.0
  Al  Al22  1  0.000  0.491  0.275  1.0
  Al  Al23  1  0.725  0.216  0.725  1.0
  Al  Al24  1  0.725  0.725  0.216  1.0
  Al  Al25  1  0.000  0.275  0.491  1.0
  Al  Al26  1  0.275  0.000  0.491  1.0
  Al  Al27  1  0.509  0.509  0.784  1.0
  Al  Al28  1  0.784  0.509  0.509  1.0
  Al  Al29  1  0.509  0.784  0.509  1.0
  Ni  Ni30  1  0.500  0.250  0.750  1.0
  Ni  Ni31  1  0.250  0.500  0.750  1.0
  Ni  Ni32  1  0.750  0.250  0.500  1.0
  Ni  Ni33  1  0.750  0.500  0.250  1.0
  Ni  Ni34  1  0.500  0.750  0.250  1.0
  Ni  Ni35  1  0.250  0.750  0.500  1.0
  Ge  Ge36  1  0.337  0.000  0.000  1.0
  Ge  Ge37  1  0.000  0.337  0.000  1.0
  Ge  Ge38  1  0.000  0.000  0.337  1.0
  Ge  Ge39  1  0.663  0.663  0.663  1.0
  Ge  Ge40  1  0.673  0.000  0.000  1.0
  Ge  Ge41  1  0.000  0.673  0.000  1.0
  Ge  Ge42  1  0.000  0.000  0.673  1.0
  Ge  Ge43  1  0.327  0.327  0.327  1.0
[/CIF]
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The crystal structure described by Al15Ge4Ni3 crystallizes in the cubic I-43m space group. There are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a body-centered cubic geometry to four equivalent Al(2) and four equivalent Al(3) atoms. In the second Ni site, Ni(1) is bonded in a body-centered cubic geometry to four equivalent Al(2) and four equivalent Al(3) atoms. In the third Ni site, Ni(1) is bonded in a body-centered cubic geometry to four equivalent Al(2) and four equivalent Al(3) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Ge(1) and two equivalent Ge(2) atoms. In the second Al site, Al(2) is bonded in a distorted trigonal planar geometry to two Ni(1,1) and one Ge(2) atom. In the third Al site, Al(3) is bonded in a distorted trigonal planar geometry to two Ni(1,1) and one Ge(1) atom. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(3) atoms. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(2) atoms. In the third Ge site, Ge(2) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(2) atoms. In the fourth Ge site, Ge(1) is bonded in a 6-coordinate geometry to three equivalent Al(1) and three equivalent Al(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al15Ni3Ge4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.882
_cell_length_b   9.882
_cell_length_c   9.882
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   742.797
_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
  Al  Al0  1  0.000  0.809  0.809  1.0
  Al  Al1  1  0.191  0.000  0.191  1.0
  Al  Al2  1  0.191  0.191  0.000  1.0
  Al  Al3  1  0.000  0.191  0.191  1.0
  Al  Al4  1  0.809  0.000  0.809  1.0
  Al  Al5  1  0.809  0.809  0.000  1.0
  Al  Al6  1  0.755  0.478  0.000  1.0
  Al  Al7  1  0.276  0.522  0.522  1.0
  Al  Al8  1  0.755  0.000  0.478  1.0
  Al  Al9  1  0.478  0.755  0.000  1.0
  Al  Al10  1  0.000  0.755  0.478  1.0
  Al  Al11  1  0.522  0.276  0.522  1.0
  Al  Al12  1  0.522  0.522  0.276  1.0
  Al  Al13  1  0.000  0.478  0.755  1.0
  Al  Al14  1  0.478  0.000  0.755  1.0
  Al  Al15  1  0.245  0.245  0.724  1.0
  Al  Al16  1  0.724  0.245  0.245  1.0
  Al  Al17  1  0.245  0.724  0.245  1.0
  Al  Al18  1  0.491  0.275  0.000  1.0
  Al  Al19  1  0.216  0.725  0.725  1.0
  Al  Al20  1  0.491  0.000  0.275  1.0
  Al  Al21  1  0.275  0.491  0.000  1.0
  Al  Al22  1  0.000  0.491  0.275  1.0
  Al  Al23  1  0.725  0.216  0.725  1.0
  Al  Al24  1  0.725  0.725  0.216  1.0
  Al  Al25  1  0.000  0.275  0.491  1.0
  Al  Al26  1  0.275  0.000  0.491  1.0
  Al  Al27  1  0.509  0.509  0.784  1.0
  Al  Al28  1  0.784  0.509  0.509  1.0
  Al  Al29  1  0.509  0.784  0.509  1.0
  Ni  Ni30  1  0.500  0.250  0.750  1.0
  Ni  Ni31  1  0.250  0.500  0.750  1.0
  Ni  Ni32  1  0.750  0.250  0.500  1.0
  Ni  Ni33  1  0.750  0.500  0.250  1.0
  Ni  Ni34  1  0.500  0.750  0.250  1.0
  Ni  Ni35  1  0.250  0.750  0.500  1.0
  Ge  Ge36  1  0.337  0.000  0.000  1.0
  Ge  Ge37  1  0.000  0.337  0.000  1.0
  Ge  Ge38  1  0.000  0.000  0.337  1.0
  Ge  Ge39  1  0.663  0.663  0.663  1.0
  Ge  Ge40  1  0.673  0.000  0.000  1.0
  Ge  Ge41  1  0.000  0.673  0.000  1.0
  Ge  Ge42  1  0.000  0.000  0.673  1.0
  Ge  Ge43  1  0.327  0.327  0.327  1.0
[/CIF]
.