HfCu3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Hf(1) is bonded in a distorted body-centered cubic geometry to six equivalent Cu(2) and eight equivalent Cu(1) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to four equivalent Hf(1) and four equivalent Cu(2) atoms to form a mixture of distorted edge, face, and corner-sharing CuHf4Cu4 tetrahedra. In the second Cu site, Cu(2) is bonded in a 14-coordinate geometry to six equivalent Hf(1) and eight equivalent Cu(1) atoms.
HfCu3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. Hf(1) is bonded in a distorted body-centered cubic geometry to six equivalent Cu(2) and eight equivalent Cu(1) atoms. All Hf(1)-Cu(2) bond lengths are 3.05 Å. All Hf(1)-Cu(1) bond lengths are 2.64 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to four equivalent Hf(1) and four equivalent Cu(2) atoms to form a mixture of distorted edge, face, and corner-sharing CuHf4Cu4 tetrahedra. All Cu(1)-Cu(2) bond lengths are 2.64 Å. In the second Cu site, Cu(2) is bonded in a 14-coordinate geometry to six equivalent Hf(1) and eight equivalent Cu(1) atoms.