Hf9W4P crystallizes in the orthorhombic Cmcm space group. There are four inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 5-coordinate geometry to one W(1), one W(3), two equivalent W(2), and one P(1) atom. In the second Hf site, Hf(2) is bonded in a 6-coordinate geometry to one Hf(2), two equivalent Hf(4), two equivalent W(2), and one P(1) atom. In the third Hf site, Hf(3) is bonded in a single-bond geometry to one P(1) atom. In the fourth Hf site, Hf(4) is bonded in a distorted linear geometry to four equivalent Hf(2), one W(1), and one W(2) atom. There are three inequivalent W sites. In the first W site, W(1) is bonded in a 4-coordinate geometry to two equivalent Hf(1) and two equivalent Hf(4) atoms. In the second W site, W(2) is bonded in a 7-coordinate geometry to one Hf(4), two equivalent Hf(1), and four equivalent Hf(2) atoms. In the third W site, W(3) is bonded in a linear geometry to two equivalent Hf(1) atoms. P(1) is bonded in a 7-coordinate geometry to one Hf(3), two equivalent Hf(1), and four equivalent Hf(2) atoms.
Hf9W4P crystallizes in the orthorhombic Cmcm space group. There are four inequivalent Hf sites. In the first Hf site, Hf(1) is bonded in a 5-coordinate geometry to one W(1), one W(3), two equivalent W(2), and one P(1) atom. The Hf(1)-W(1) bond length is 2.79 Å. The Hf(1)-W(3) bond length is 2.45 Å. Both Hf(1)-W(2) bond lengths are 3.19 Å. The Hf(1)-P(1) bond length is 2.42 Å. In the second Hf site, Hf(2) is bonded in a 6-coordinate geometry to one Hf(2), two equivalent Hf(4), two equivalent W(2), and one P(1) atom. The Hf(2)-Hf(2) bond length is 2.55 Å. There is one shorter (3.01 Å) and one longer (3.05 Å) Hf(2)-Hf(4) bond length. There is one shorter (3.02 Å) and one longer (3.08 Å) Hf(2)-W(2) bond length. The Hf(2)-P(1) bond length is 3.17 Å. In the third Hf site, Hf(3) is bonded in a single-bond geometry to one P(1) atom. The Hf(3)-P(1) bond length is 2.52 Å. In the fourth Hf site, Hf(4) is bonded in a distorted linear geometry to four equivalent Hf(2), one W(1), and one W(2) atom. The Hf(4)-W(1) bond length is 3.05 Å. The Hf(4)-W(2) bond length is 2.77 Å. There are three inequivalent W sites. In the first W site, W(1) is bonded in a 4-coordinate geometry to two equivalent Hf(1) and two equivalent Hf(4) atoms. In the second W site, W(2) is bonded in a 7-coordinate geometry to one Hf(4), two equivalent Hf(1), and four equivalent Hf(2) atoms. In the third W site, W(3) is bonded in a linear geometry to two equivalent Hf(1) atoms. P(1) is bonded in a 7-coordinate geometry to one Hf(3), two equivalent Hf(1), and four equivalent Hf(2) atoms.