CePdAl crystallizes in the orthorhombic Pmmn space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 5-coordinate geometry to one Pd(4), two equivalent Pd(2), two equivalent Pd(3), and two equivalent Al(4) atoms. In the second Ce site, Ce(2) is bonded in a 5-coordinate geometry to one Pd(4), four equivalent Pd(3), and four equivalent Al(4) atoms. In the third Ce site, Ce(3) is bonded in a 5-coordinate geometry to one Pd(1), two equivalent Pd(2), two equivalent Pd(3), and two equivalent Al(4) atoms. In the fourth Ce site, Ce(4) is bonded in a 5-coordinate geometry to two equivalent Pd(2) and three equivalent Pd(1) atoms. There are four inequivalent Pd sites. In the first Pd site, Pd(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), one Al(2), one Al(3), and one Al(4) atom. In the second Pd site, Pd(4) is bonded in a 9-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent Al(3), and four equivalent Al(4) atoms. In the third Pd site, Pd(1) is bonded in a 9-coordinate geometry to one Ce(3), three equivalent Ce(4), two equivalent Al(2), and three equivalent Al(1) atoms. In the fourth Pd site, Pd(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(3), two equivalent Ce(4), one Al(1), one Al(2), and one Al(4) atom. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded to one Pd(2) and three equivalent Pd(1) atoms to form a mixture of distorted corner and edge-sharing AlPd4 tetrahedra. In the second Al site, Al(2) is bonded in a 4-coordinate geometry to one Pd(2), one Pd(3), and two equivalent Pd(1) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to two equivalent Pd(3), two equivalent Pd(4), and two equivalent Al(4) atoms. In the fourth Al site, Al(4) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), one Pd(2), one Pd(3), two equivalent Pd(4), one Al(3), and one Al(4) atom.
CePdAl crystallizes in the orthorhombic Pmmn space group. There are four inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 5-coordinate geometry to one Pd(4), two equivalent Pd(2), two equivalent Pd(3), and two equivalent Al(4) atoms. The Ce(1)-Pd(4) bond length is 3.02 Å. Both Ce(1)-Pd(2) bond lengths are 3.05 Å. Both Ce(1)-Pd(3) bond lengths are 3.03 Å. Both Ce(1)-Al(4) bond lengths are 3.36 Å. In the second Ce site, Ce(2) is bonded in a 5-coordinate geometry to one Pd(4), four equivalent Pd(3), and four equivalent Al(4) atoms. The Ce(2)-Pd(4) bond length is 3.02 Å. All Ce(2)-Pd(3) bond lengths are 3.02 Å. All Ce(2)-Al(4) bond lengths are 3.38 Å. In the third Ce site, Ce(3) is bonded in a 5-coordinate geometry to one Pd(1), two equivalent Pd(2), two equivalent Pd(3), and two equivalent Al(4) atoms. The Ce(3)-Pd(1) bond length is 2.86 Å. Both Ce(3)-Pd(2) bond lengths are 3.01 Å. Both Ce(3)-Pd(3) bond lengths are 3.00 Å. Both Ce(3)-Al(4) bond lengths are 3.23 Å. In the fourth Ce site, Ce(4) is bonded in a 5-coordinate geometry to two equivalent Pd(2) and three equivalent Pd(1) atoms. Both Ce(4)-Pd(2) bond lengths are 2.99 Å. There is one shorter (3.12 Å) and two longer (3.18 Å) Ce(4)-Pd(1) bond lengths. There are four inequivalent Pd sites. In the first Pd site, Pd(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), one Al(2), one Al(3), and one Al(4) atom. The Pd(3)-Al(2) bond length is 2.82 Å. The Pd(3)-Al(3) bond length is 2.83 Å. The Pd(3)-Al(4) bond length is 2.84 Å. In the second Pd site, Pd(4) is bonded in a 9-coordinate geometry to one Ce(2), two equivalent Ce(1), two equivalent Al(3), and four equivalent Al(4) atoms. Both Pd(4)-Al(3) bond lengths are 2.70 Å. All Pd(4)-Al(4) bond lengths are 2.69 Å. In the third Pd site, Pd(1) is bonded in a 9-coordinate geometry to one Ce(3), three equivalent Ce(4), two equivalent Al(2), and three equivalent Al(1) atoms. Both Pd(1)-Al(2) bond lengths are 2.63 Å. There is one shorter (2.60 Å) and two longer (2.65 Å) Pd(1)-Al(1) bond lengths. In the fourth Pd site, Pd(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(3), two equivalent Ce(4), one Al(1), one Al(2), and one Al(4) atom. The Pd(2)-Al(1) bond length is 2.72 Å. The Pd(2)-Al(2) bond length is 2.81 Å. The Pd(2)-Al(4) bond length is 2.89 Å. There are four inequivalent Al sites. In the first Al site, Al(1) is bonded to one Pd(2) and three equivalent Pd(1) atoms to form a mixture of distorted corner and edge-sharing AlPd4 tetrahedra. In the second Al site, Al(2) is bonded in a 4-coordinate geometry to one Pd(2), one Pd(3), and two equivalent Pd(1) atoms. In the third Al site, Al(3) is bonded in a 4-coordinate geometry to two equivalent Pd(3), two equivalent Pd(4), and two equivalent Al(4) atoms. Both Al(3)-Al(4) bond lengths are 2.87 Å. In the fourth Al site, Al(4) is bonded in a 12-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), one Pd(2), one Pd(3), two equivalent Pd(4), one Al(3), and one Al(4) atom. The Al(4)-Al(4) bond length is 2.87 Å.