RuAu3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. Ru(1) is bonded to four equivalent Au(2) and eight equivalent Au(1) atoms to form RuAu12 cuboctahedra that share corners with four equivalent Ru(1)Au12 cuboctahedra, corners with eight equivalent Au(2)Ru4Au8 cuboctahedra, edges with eight equivalent Ru(1)Au12 cuboctahedra, edges with sixteen equivalent Au(1)Ru4Au8 cuboctahedra, faces with four equivalent Ru(1)Au12 cuboctahedra, faces with six equivalent Au(2)Ru4Au8 cuboctahedra, and faces with eight equivalent Au(1)Ru4Au8 cuboctahedra. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded to four equivalent Ru(1), four equivalent Au(1), and four equivalent Au(2) atoms to form distorted AuRu4Au8 cuboctahedra that share corners with twelve equivalent Au(1)Ru4Au8 cuboctahedra, edges with eight equivalent Ru(1)Au12 cuboctahedra, edges with eight equivalent Au(1)Ru4Au8 cuboctahedra, edges with eight equivalent Au(2)Ru4Au8 cuboctahedra, faces with four equivalent Ru(1)Au12 cuboctahedra, faces with four equivalent Au(2)Ru4Au8 cuboctahedra, and faces with ten equivalent Au(1)Ru4Au8 cuboctahedra. In the second Au site, Au(2) is bonded to four equivalent Ru(1) and eight equivalent Au(1) atoms to form AuRu4Au8 cuboctahedra that share corners with four equivalent Au(2)Ru4Au8 cuboctahedra, corners with eight equivalent Ru(1)Au12 cuboctahedra, edges with eight equivalent Au(2)Ru4Au8 cuboctahedra, edges with sixteen equivalent Au(1)Ru4Au8 cuboctahedra, faces with four equivalent Au(2)Ru4Au8 cuboctahedra, faces with six equivalent Ru(1)Au12 cuboctahedra, and faces with eight equivalent Au(1)Ru4Au8 cuboctahedra.
RuAu3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. Ru(1) is bonded to four equivalent Au(2) and eight equivalent Au(1) atoms to form RuAu12 cuboctahedra that share corners with four equivalent Ru(1)Au12 cuboctahedra, corners with eight equivalent Au(2)Ru4Au8 cuboctahedra, edges with eight equivalent Ru(1)Au12 cuboctahedra, edges with sixteen equivalent Au(1)Ru4Au8 cuboctahedra, faces with four equivalent Ru(1)Au12 cuboctahedra, faces with six equivalent Au(2)Ru4Au8 cuboctahedra, and faces with eight equivalent Au(1)Ru4Au8 cuboctahedra. All Ru(1)-Au(2) bond lengths are 2.95 Å. All Ru(1)-Au(1) bond lengths are 2.86 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded to four equivalent Ru(1), four equivalent Au(1), and four equivalent Au(2) atoms to form distorted AuRu4Au8 cuboctahedra that share corners with twelve equivalent Au(1)Ru4Au8 cuboctahedra, edges with eight equivalent Ru(1)Au12 cuboctahedra, edges with eight equivalent Au(1)Ru4Au8 cuboctahedra, edges with eight equivalent Au(2)Ru4Au8 cuboctahedra, faces with four equivalent Ru(1)Au12 cuboctahedra, faces with four equivalent Au(2)Ru4Au8 cuboctahedra, and faces with ten equivalent Au(1)Ru4Au8 cuboctahedra. All Au(1)-Au(1) bond lengths are 2.95 Å. All Au(1)-Au(2) bond lengths are 2.86 Å. In the second Au site, Au(2) is bonded to four equivalent Ru(1) and eight equivalent Au(1) atoms to form AuRu4Au8 cuboctahedra that share corners with four equivalent Au(2)Ru4Au8 cuboctahedra, corners with eight equivalent Ru(1)Au12 cuboctahedra, edges with eight equivalent Au(2)Ru4Au8 cuboctahedra, edges with sixteen equivalent Au(1)Ru4Au8 cuboctahedra, faces with four equivalent Au(2)Ru4Au8 cuboctahedra, faces with six equivalent Ru(1)Au12 cuboctahedra, and faces with eight equivalent Au(1)Ru4Au8 cuboctahedra.