RuCu2Al7 crystallizes in the tetragonal P4/mnc space group. Ru(1) is bonded in a 9-coordinate geometry to one Al(2), four equivalent Al(1), and four equivalent Al(3) atoms. Cu(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1), two equivalent Al(2), and six equivalent Al(3) atoms. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Ru(1) atoms. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to one Ru(1) and four equivalent Cu(1) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to one Ru(1) and three equivalent Cu(1) atoms.
RuCu2Al7 crystallizes in the tetragonal P4/mnc space group. Ru(1) is bonded in a 9-coordinate geometry to one Al(2), four equivalent Al(1), and four equivalent Al(3) atoms. The Ru(1)-Al(2) bond length is 2.51 Å. All Ru(1)-Al(1) bond lengths are 2.52 Å. All Ru(1)-Al(3) bond lengths are 2.50 Å. Cu(1) is bonded in a 10-coordinate geometry to two equivalent Cu(1), two equivalent Al(2), and six equivalent Al(3) atoms. Both Cu(1)-Cu(1) bond lengths are 2.55 Å. Both Cu(1)-Al(2) bond lengths are 2.63 Å. There are a spread of Cu(1)-Al(3) bond distances ranging from 2.53-2.59 Å. There are three inequivalent Al sites. In the first Al site, Al(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Ru(1) atoms. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to one Ru(1) and four equivalent Cu(1) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to one Ru(1) and three equivalent Cu(1) atoms.