La2Pd4GaAl3 crystallizes in the tetragonal P-4m2 space group. La(1) is bonded in a 16-coordinate geometry to two equivalent Pd(1), two equivalent Pd(2), four equivalent Pd(3), two equivalent Ga(1), two equivalent Al(1), and four equivalent Al(2) atoms. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 4-coordinate geometry to four equivalent La(1) and four equivalent Al(2) atoms. In the second Pd site, Pd(2) is bonded in a 4-coordinate geometry to four equivalent La(1) and four equivalent Al(2) atoms. In the third Pd site, Pd(3) is bonded in a 5-coordinate geometry to four equivalent La(1), two equivalent Ga(1), one Al(2), and two equivalent Al(1) atoms. Ga(1) is bonded to four equivalent La(1) and four equivalent Pd(3) atoms to form distorted GaLa4Pd4 tetrahedra that share edges with four equivalent Ga(1)La4Pd4 tetrahedra and faces with four equivalent Al(1)La4Pd4 tetrahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent La(1) and four equivalent Pd(3) atoms to form distorted AlLa4Pd4 tetrahedra that share edges with four equivalent Al(1)La4Pd4 tetrahedra and faces with four equivalent Ga(1)La4Pd4 tetrahedra. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to four equivalent La(1), one Pd(3), two equivalent Pd(1), and two equivalent Pd(2) atoms.
La2Pd4GaAl3 crystallizes in the tetragonal P-4m2 space group. La(1) is bonded in a 16-coordinate geometry to two equivalent Pd(1), two equivalent Pd(2), four equivalent Pd(3), two equivalent Ga(1), two equivalent Al(1), and four equivalent Al(2) atoms. Both La(1)-Pd(1) bond lengths are 3.39 Å. Both La(1)-Pd(2) bond lengths are 3.39 Å. All La(1)-Pd(3) bond lengths are 3.34 Å. Both La(1)-Ga(1) bond lengths are 3.36 Å. Both La(1)-Al(1) bond lengths are 3.36 Å. All La(1)-Al(2) bond lengths are 3.40 Å. There are three inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a 4-coordinate geometry to four equivalent La(1) and four equivalent Al(2) atoms. All Pd(1)-Al(2) bond lengths are 2.54 Å. In the second Pd site, Pd(2) is bonded in a 4-coordinate geometry to four equivalent La(1) and four equivalent Al(2) atoms. All Pd(2)-Al(2) bond lengths are 2.54 Å. In the third Pd site, Pd(3) is bonded in a 5-coordinate geometry to four equivalent La(1), two equivalent Ga(1), one Al(2), and two equivalent Al(1) atoms. Both Pd(3)-Ga(1) bond lengths are 2.59 Å. The Pd(3)-Al(2) bond length is 2.52 Å. Both Pd(3)-Al(1) bond lengths are 2.59 Å. Ga(1) is bonded to four equivalent La(1) and four equivalent Pd(3) atoms to form distorted GaLa4Pd4 tetrahedra that share edges with four equivalent Ga(1)La4Pd4 tetrahedra and faces with four equivalent Al(1)La4Pd4 tetrahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent La(1) and four equivalent Pd(3) atoms to form distorted AlLa4Pd4 tetrahedra that share edges with four equivalent Al(1)La4Pd4 tetrahedra and faces with four equivalent Ga(1)La4Pd4 tetrahedra. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to four equivalent La(1), one Pd(3), two equivalent Pd(1), and two equivalent Pd(2) atoms.