Eu2(Au2Al)3 crystallizes in the trigonal R-3c space group. Eu(1) is bonded in a 9-coordinate geometry to twelve equivalent Au(1) atoms. Au(1) is bonded in a 11-coordinate geometry to four equivalent Eu(1), four equivalent Au(1), and three equivalent Al(1) atoms. Al(1) is bonded in a 6-coordinate geometry to six equivalent Au(1) atoms.
Eu2(Au2Al)3 crystallizes in the trigonal R-3c space group. Eu(1) is bonded in a 9-coordinate geometry to twelve equivalent Au(1) atoms. There are a spread of Eu(1)-Au(1) bond distances ranging from 3.27-3.66 Å. Au(1) is bonded in a 11-coordinate geometry to four equivalent Eu(1), four equivalent Au(1), and three equivalent Al(1) atoms. There are a spread of Au(1)-Au(1) bond distances ranging from 2.92-3.00 Å. There are a spread of Au(1)-Al(1) bond distances ranging from 2.61-2.79 Å. Al(1) is bonded in a 6-coordinate geometry to six equivalent Au(1) atoms.