V6Ni16Si7 crystallizes in the cubic Fm-3m space group. V(1) is bonded in a 16-coordinate geometry to four equivalent V(1), four equivalent Ni(1), four equivalent Ni(2), and four equivalent Si(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent V(1), three equivalent Ni(1), three equivalent Ni(2), and three equivalent Si(1) atoms. In the second Ni site, Ni(2) is bonded in a 13-coordinate geometry to three equivalent V(1), three equivalent Ni(1), three equivalent Ni(2), one Si(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to four equivalent V(1), four equivalent Ni(1), and four equivalent Ni(2) atoms to form a mixture of corner and face-sharing SiV4Ni8 cuboctahedra. In the second Si site, Si(2) is bonded in a body-centered cubic geometry to eight equivalent Ni(2) atoms.
V6Ni16Si7 crystallizes in the cubic Fm-3m space group. V(1) is bonded in a 16-coordinate geometry to four equivalent V(1), four equivalent Ni(1), four equivalent Ni(2), and four equivalent Si(1) atoms. All V(1)-V(1) bond lengths are 2.98 Å. All V(1)-Ni(1) bond lengths are 2.61 Å. All V(1)-Ni(2) bond lengths are 2.80 Å. All V(1)-Si(1) bond lengths are 2.84 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 12-coordinate geometry to three equivalent V(1), three equivalent Ni(1), three equivalent Ni(2), and three equivalent Si(1) atoms. All Ni(1)-Ni(1) bond lengths are 2.63 Å. All Ni(1)-Ni(2) bond lengths are 2.51 Å. All Ni(1)-Si(1) bond lengths are 2.26 Å. In the second Ni site, Ni(2) is bonded in a 13-coordinate geometry to three equivalent V(1), three equivalent Ni(1), three equivalent Ni(2), one Si(2), and three equivalent Si(1) atoms. All Ni(2)-Ni(2) bond lengths are 2.60 Å. The Ni(2)-Si(2) bond length is 2.25 Å. All Ni(2)-Si(1) bond lengths are 2.44 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded to four equivalent V(1), four equivalent Ni(1), and four equivalent Ni(2) atoms to form a mixture of corner and face-sharing SiV4Ni8 cuboctahedra. In the second Si site, Si(2) is bonded in a body-centered cubic geometry to eight equivalent Ni(2) atoms.