Hf6Ni16Ge7 crystallizes in the cubic Fm-3m space group. Hf(1) is bonded in a 12-coordinate geometry to four equivalent Ni(1), four equivalent Ni(2), and four equivalent Ge(1) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 13-coordinate geometry to three equivalent Hf(1), three equivalent Ni(1), three equivalent Ni(2), one Ge(2), and three equivalent Ge(1) atoms. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to three equivalent Hf(1), three equivalent Ni(1), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a body-centered cubic geometry to eight equivalent Ni(1) atoms. In the second Ge site, Ge(1) is bonded to four equivalent Hf(1), four equivalent Ni(1), and four equivalent Ni(2) atoms to form a mixture of face and corner-sharing GeHf4Ni8 cuboctahedra.
Hf6Ni16Ge7 crystallizes in the cubic Fm-3m space group. Hf(1) is bonded in a 12-coordinate geometry to four equivalent Ni(1), four equivalent Ni(2), and four equivalent Ge(1) atoms. All Hf(1)-Ni(1) bond lengths are 2.80 Å. All Hf(1)-Ni(2) bond lengths are 2.76 Å. All Hf(1)-Ge(1) bond lengths are 2.92 Å. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 13-coordinate geometry to three equivalent Hf(1), three equivalent Ni(1), three equivalent Ni(2), one Ge(2), and three equivalent Ge(1) atoms. All Ni(1)-Ni(1) bond lengths are 2.72 Å. All Ni(1)-Ni(2) bond lengths are 2.58 Å. The Ni(1)-Ge(2) bond length is 2.36 Å. All Ni(1)-Ge(1) bond lengths are 2.53 Å. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to three equivalent Hf(1), three equivalent Ni(1), and three equivalent Ge(1) atoms. All Ni(2)-Ge(1) bond lengths are 2.35 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a body-centered cubic geometry to eight equivalent Ni(1) atoms. In the second Ge site, Ge(1) is bonded to four equivalent Hf(1), four equivalent Ni(1), and four equivalent Ni(2) atoms to form a mixture of face and corner-sharing GeHf4Ni8 cuboctahedra.