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.
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. All Ni(1)-Al(2) bond lengths are 2.43 Å. All Ni(1)-Al(3) bond lengths are 2.43 Å. 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. All Ni(1)-Al(2) bond lengths are 2.43 Å. All Ni(1)-Al(3) bond lengths are 2.43 Å. 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. All Ni(1)-Al(2) bond lengths are 2.43 Å. All Ni(1)-Al(3) bond lengths are 2.43 Å. 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. Both Al(1)-Ge(1) bond lengths are 2.73 Å. Both Al(1)-Ge(2) bond lengths are 2.66 Å. 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. The Al(2)-Ge(2) bond length is 2.54 Å. 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. The Al(3)-Ge(1) bond length is 2.63 Å. 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. All Ge(2)-Al(1) bond lengths are 2.66 Å. All Ge(2)-Al(2) bond lengths are 2.54 Å. 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. All Ge(1)-Al(1) bond lengths are 2.73 Å. All Ge(1)-Al(3) bond lengths are 2.63 Å.