Th3Pd4 crystallizes in the trigonal R-3 space group. Th(1) is bonded in a 9-coordinate geometry to one Pd(1), one Pd(2), and seven equivalent Pd(3) atoms. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 8-coordinate geometry to six equivalent Th(1) and two equivalent Pd(2) atoms. In the second Pd site, Pd(2) is bonded in a 8-coordinate geometry to six equivalent Th(1) and two equivalent Pd(1) atoms. In the third Pd site, Pd(3) is bonded in a 10-coordinate geometry to seven equivalent Th(1) and three equivalent Pd(3) atoms.
Th3Pd4 crystallizes in the trigonal R-3 space group. Th(1) is bonded in a 9-coordinate geometry to one Pd(1), one Pd(2), and seven equivalent Pd(3) atoms. The Th(1)-Pd(1) bond length is 3.00 Å. The Th(1)-Pd(2) bond length is 3.07 Å. There are a spread of Th(1)-Pd(3) bond distances ranging from 2.88-3.35 Å. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 8-coordinate geometry to six equivalent Th(1) and two equivalent Pd(2) atoms. Both Pd(1)-Pd(2) bond lengths are 2.89 Å. In the second Pd site, Pd(2) is bonded in a 8-coordinate geometry to six equivalent Th(1) and two equivalent Pd(1) atoms. In the third Pd site, Pd(3) is bonded in a 10-coordinate geometry to seven equivalent Th(1) and three equivalent Pd(3) atoms. There is one shorter (2.93 Å) and two longer (3.01 Å) Pd(3)-Pd(3) bond lengths.