HfPdAs crystallizes in the hexagonal P-62m space group. Hf(1) is bonded in a 11-coordinate geometry to six equivalent Pd(1), one As(2), and four equivalent As(1) atoms. Pd(1) is bonded in a 10-coordinate geometry to six equivalent Hf(1), two equivalent As(1), and two equivalent As(2) atoms. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 9-coordinate geometry to six equivalent Hf(1) and three equivalent Pd(1) atoms. In the second As site, As(2) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Pd(1) atoms.
HfPdAs crystallizes in the hexagonal P-62m space group. Hf(1) is bonded in a 11-coordinate geometry to six equivalent Pd(1), one As(2), and four equivalent As(1) atoms. There are two shorter (2.99 Å) and four longer (3.11 Å) Hf(1)-Pd(1) bond lengths. The Hf(1)-As(2) bond length is 2.73 Å. All Hf(1)-As(1) bond lengths are 2.85 Å. Pd(1) is bonded in a 10-coordinate geometry to six equivalent Hf(1), two equivalent As(1), and two equivalent As(2) atoms. Both Pd(1)-As(1) bond lengths are 2.51 Å. Both Pd(1)-As(2) bond lengths are 2.66 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a 9-coordinate geometry to six equivalent Hf(1) and three equivalent Pd(1) atoms. In the second As site, As(2) is bonded in a 9-coordinate geometry to three equivalent Hf(1) and six equivalent Pd(1) atoms.