EuAu3Ga4 crystallizes in the tetragonal P4/mmm space group. Eu(1) is bonded in a 16-coordinate geometry to eight equivalent Au(1) and eight equivalent Ga(1) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 9-coordinate geometry to four equivalent Eu(1), one Au(1), and four equivalent Ga(1) atoms. In the second Au site, Au(2) is bonded in a body-centered cubic geometry to eight equivalent Ga(1) atoms. Ga(1) is bonded to two equivalent Eu(1), two equivalent Au(1), and two equivalent Au(2) atoms to form a mixture of corner, edge, and face-sharing GaEu2Au4 tetrahedra.
EuAu3Ga4 crystallizes in the tetragonal P4/mmm space group. Eu(1) is bonded in a 16-coordinate geometry to eight equivalent Au(1) and eight equivalent Ga(1) atoms. All Eu(1)-Au(1) bond lengths are 3.35 Å. All Eu(1)-Ga(1) bond lengths are 3.56 Å. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 9-coordinate geometry to four equivalent Eu(1), one Au(1), and four equivalent Ga(1) atoms. The Au(1)-Au(1) bond length is 2.75 Å. All Au(1)-Ga(1) bond lengths are 2.60 Å. In the second Au site, Au(2) is bonded in a body-centered cubic geometry to eight equivalent Ga(1) atoms. All Au(2)-Ga(1) bond lengths are 2.63 Å. Ga(1) is bonded to two equivalent Eu(1), two equivalent Au(1), and two equivalent Au(2) atoms to form a mixture of corner, edge, and face-sharing GaEu2Au4 tetrahedra.