Ba(RuAs3)4 crystallizes in the cubic Im-3 space group. Ba(1) is bonded to twelve equivalent As(1) atoms to form BaAs12 cuboctahedra that share faces with eight equivalent Ru(1)As6 octahedra. Ru(1) is bonded to six equivalent As(1) atoms to form distorted RuAs6 octahedra that share corners with six equivalent Ru(1)As6 octahedra and faces with two equivalent Ba(1)As12 cuboctahedra. The corner-sharing octahedral tilt angles are 59°. As(1) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Ru(1), and two equivalent As(1) atoms.
Ba(RuAs3)4 crystallizes in the cubic Im-3 space group. Ba(1) is bonded to twelve equivalent As(1) atoms to form BaAs12 cuboctahedra that share faces with eight equivalent Ru(1)As6 octahedra. All Ba(1)-As(1) bond lengths are 3.33 Å. Ru(1) is bonded to six equivalent As(1) atoms to form distorted RuAs6 octahedra that share corners with six equivalent Ru(1)As6 octahedra and faces with two equivalent Ba(1)As12 cuboctahedra. The corner-sharing octahedral tilt angles are 59°. All Ru(1)-As(1) bond lengths are 2.49 Å. As(1) is bonded in a 5-coordinate geometry to one Ba(1), two equivalent Ru(1), and two equivalent As(1) atoms. There is one shorter (2.54 Å) and one longer (2.64 Å) As(1)-As(1) bond length.