Hf7Ni10 crystallizes in the orthorhombic Cmce space group. There are four inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 10-coordinate geometry to two equivalent Ni(3), four equivalent Ni(1), and four equivalent Ni(2) atoms. In the second Hf site, Hf(2) is bonded in a body-centered cubic geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms. In the third Hf site, Hf(3) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms. In the fourth Hf site, Hf(4) is bonded in a 7-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), and three equivalent Ni(3) atoms. There are three inequivalent Ni sites. In the first Ni site, Ni(2) is bonded in a 6-coordinate geometry to one Hf(2), one Hf(4), two equivalent Hf(1), two equivalent Hf(3), and one Ni(3) atom. In the second Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Hf(1), three equivalent Hf(4), one Ni(3), two equivalent Ni(1), and two equivalent Ni(2) atoms. In the third Ni site, Ni(1) is bonded in a 6-coordinate geometry to one Hf(2), one Hf(4), two equivalent Hf(1), two equivalent Hf(3), and one Ni(3) atom.
Hf7Ni10 crystallizes in the orthorhombic Cmce space group. There are four inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 10-coordinate geometry to two equivalent Ni(3), four equivalent Ni(1), and four equivalent Ni(2) atoms. Both Hf(1)-Ni(3) bond lengths are 2.71 Å. There are two shorter (2.70 Å) and two longer (2.74 Å) Hf(1)-Ni(1) bond lengths. There are two shorter (2.69 Å) and two longer (2.73 Å) Hf(1)-Ni(2) bond lengths. In the second Hf site, Hf(2) is bonded in a body-centered cubic geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms. All Hf(2)-Ni(1) bond lengths are 2.58 Å. All Hf(2)-Ni(2) bond lengths are 2.58 Å. In the third Hf site, Hf(3) is bonded in a 8-coordinate geometry to four equivalent Ni(1) and four equivalent Ni(2) atoms. There are two shorter (2.58 Å) and two longer (2.66 Å) Hf(3)-Ni(1) bond lengths. There are two shorter (2.56 Å) and two longer (2.69 Å) Hf(3)-Ni(2) bond lengths. In the fourth Hf site, Hf(4) is bonded in a 7-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), and three equivalent Ni(3) atoms. Both Hf(4)-Ni(1) bond lengths are 2.66 Å. Both Hf(4)-Ni(2) bond lengths are 2.66 Å. There are a spread of Hf(4)-Ni(3) bond distances ranging from 2.66-2.74 Å. There are three inequivalent Ni sites. In the first Ni site, Ni(2) is bonded in a 6-coordinate geometry to one Hf(2), one Hf(4), two equivalent Hf(1), two equivalent Hf(3), and one Ni(3) atom. The Ni(2)-Ni(3) bond length is 2.57 Å. In the second Ni site, Ni(3) is bonded in a 10-coordinate geometry to two equivalent Hf(1), three equivalent Hf(4), one Ni(3), two equivalent Ni(1), and two equivalent Ni(2) atoms. The Ni(3)-Ni(3) bond length is 2.70 Å. Both Ni(3)-Ni(1) bond lengths are 2.59 Å. In the third Ni site, Ni(1) is bonded in a 6-coordinate geometry to one Hf(2), one Hf(4), two equivalent Hf(1), two equivalent Hf(3), and one Ni(3) atom.