U4Ru7As6 crystallizes in the cubic Im-3m space group. U(1) is bonded to six equivalent Ru(1) and six equivalent As(1) atoms to form UAs6Ru6 cuboctahedra that share corners with twelve equivalent U(1)As6Ru6 cuboctahedra, corners with twelve equivalent Ru(1)U4As4 cuboctahedra, edges with six equivalent Ru(1)U4As4 cuboctahedra, faces with six equivalent U(1)As6Ru6 cuboctahedra, and faces with two equivalent Ru(2)As6 octahedra. There are two inequivalent Ru sites. In the first Ru site, Ru(2) is bonded to six equivalent As(1) atoms to form RuAs6 octahedra that share corners with twenty-four equivalent Ru(1)U4As4 cuboctahedra and faces with eight equivalent U(1)As6Ru6 cuboctahedra. In the second Ru site, Ru(1) is bonded to four equivalent U(1) and four equivalent As(1) atoms to form distorted RuU4As4 cuboctahedra that share corners with eight equivalent U(1)As6Ru6 cuboctahedra, corners with twelve equivalent Ru(1)U4As4 cuboctahedra, corners with four equivalent Ru(2)As6 octahedra, edges with two equivalent Ru(1)U4As4 cuboctahedra, edges with four equivalent U(1)As6Ru6 cuboctahedra, and faces with four equivalent Ru(1)U4As4 cuboctahedra. The corner-sharing octahedral tilt angles are 53°. As(1) is bonded in a 9-coordinate geometry to four equivalent U(1), one Ru(2), and four equivalent Ru(1) atoms.
U4Ru7As6 crystallizes in the cubic Im-3m space group. U(1) is bonded to six equivalent Ru(1) and six equivalent As(1) atoms to form UAs6Ru6 cuboctahedra that share corners with twelve equivalent U(1)As6Ru6 cuboctahedra, corners with twelve equivalent Ru(1)U4As4 cuboctahedra, edges with six equivalent Ru(1)U4As4 cuboctahedra, faces with six equivalent U(1)As6Ru6 cuboctahedra, and faces with two equivalent Ru(2)As6 octahedra. All U(1)-Ru(1) bond lengths are 2.95 Å. All U(1)-As(1) bond lengths are 3.00 Å. There are two inequivalent Ru sites. In the first Ru site, Ru(2) is bonded to six equivalent As(1) atoms to form RuAs6 octahedra that share corners with twenty-four equivalent Ru(1)U4As4 cuboctahedra and faces with eight equivalent U(1)As6Ru6 cuboctahedra. All Ru(2)-As(1) bond lengths are 2.61 Å. In the second Ru site, Ru(1) is bonded to four equivalent U(1) and four equivalent As(1) atoms to form distorted RuU4As4 cuboctahedra that share corners with eight equivalent U(1)As6Ru6 cuboctahedra, corners with twelve equivalent Ru(1)U4As4 cuboctahedra, corners with four equivalent Ru(2)As6 octahedra, edges with two equivalent Ru(1)U4As4 cuboctahedra, edges with four equivalent U(1)As6Ru6 cuboctahedra, and faces with four equivalent Ru(1)U4As4 cuboctahedra. The corner-sharing octahedral tilt angles are 53°. All Ru(1)-As(1) bond lengths are 2.61 Å. As(1) is bonded in a 9-coordinate geometry to four equivalent U(1), one Ru(2), and four equivalent Ru(1) atoms.