Pu3Ru crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pu sites. In the first Pu site, Pu(1) is bonded to four equivalent Pu(1), four equivalent Pu(2), and four equivalent Ru(1) atoms to form distorted PuPu8Ru4 cuboctahedra that share corners with twelve equivalent Pu(1)Pu8Ru4 cuboctahedra, edges with eight equivalent Pu(1)Pu8Ru4 cuboctahedra, edges with eight equivalent Ru(1)Pu12 cuboctahedra, faces with four equivalent Ru(1)Pu12 cuboctahedra, and faces with ten equivalent Pu(1)Pu8Ru4 cuboctahedra. In the second Pu site, Pu(2) is bonded in a square co-planar geometry to eight equivalent Pu(1) and four equivalent Ru(1) atoms. Ru(1) is bonded to four equivalent Pu(2) and eight equivalent Pu(1) atoms to form distorted RuPu12 cuboctahedra that share corners with four equivalent Ru(1)Pu12 cuboctahedra, edges with eight equivalent Ru(1)Pu12 cuboctahedra, edges with sixteen equivalent Pu(1)Pu8Ru4 cuboctahedra, faces with four equivalent Ru(1)Pu12 cuboctahedra, and faces with eight equivalent Pu(1)Pu8Ru4 cuboctahedra.
Pu3Ru crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pu sites. In the first Pu site, Pu(1) is bonded to four equivalent Pu(1), four equivalent Pu(2), and four equivalent Ru(1) atoms to form distorted PuPu8Ru4 cuboctahedra that share corners with twelve equivalent Pu(1)Pu8Ru4 cuboctahedra, edges with eight equivalent Pu(1)Pu8Ru4 cuboctahedra, edges with eight equivalent Ru(1)Pu12 cuboctahedra, faces with four equivalent Ru(1)Pu12 cuboctahedra, and faces with ten equivalent Pu(1)Pu8Ru4 cuboctahedra. All Pu(1)-Pu(1) bond lengths are 2.85 Å. All Pu(1)-Pu(2) bond lengths are 3.25 Å. All Pu(1)-Ru(1) bond lengths are 3.25 Å. In the second Pu site, Pu(2) is bonded in a square co-planar geometry to eight equivalent Pu(1) and four equivalent Ru(1) atoms. All Pu(2)-Ru(1) bond lengths are 2.85 Å. Ru(1) is bonded to four equivalent Pu(2) and eight equivalent Pu(1) atoms to form distorted RuPu12 cuboctahedra that share corners with four equivalent Ru(1)Pu12 cuboctahedra, edges with eight equivalent Ru(1)Pu12 cuboctahedra, edges with sixteen equivalent Pu(1)Pu8Ru4 cuboctahedra, faces with four equivalent Ru(1)Pu12 cuboctahedra, and faces with eight equivalent Pu(1)Pu8Ru4 cuboctahedra.