CePt3Al5 crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded in a 17-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), one Al(1), one Al(2), three equivalent Al(3), three equivalent Al(4), and three equivalent Al(5) atoms. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Al(1), three equivalent Al(3), and three equivalent Al(5) atoms. In the second Pt site, Pt(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Al(2), one Al(3), two equivalent Al(1), and three equivalent Al(4) atoms. In the third Pt site, Pt(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Al(4), one Al(5), two equivalent Al(1), and three equivalent Al(2) atoms. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one Ce(1), one Pt(1), two equivalent Pt(2), and two equivalent Pt(3) atoms. In the second Al site, Al(2) is bonded in a 4-coordinate geometry to one Ce(1), one Pt(2), and three equivalent Pt(3) atoms. In the third Al site, Al(3) is bonded to three equivalent Ce(1), one Pt(2), and three equivalent Pt(1) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe3Pt4 tetrahedra. In the fourth Al site, Al(4) is bonded to three equivalent Ce(1), one Pt(3), and three equivalent Pt(2) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe3Pt4 tetrahedra. In the fifth Al site, Al(5) is bonded to three equivalent Ce(1), one Pt(3), and three equivalent Pt(1) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe3Pt4 tetrahedra.
CePt3Al5 crystallizes in the orthorhombic Pnma space group. Ce(1) is bonded in a 17-coordinate geometry to two equivalent Pt(1), two equivalent Pt(2), two equivalent Pt(3), one Al(1), one Al(2), three equivalent Al(3), three equivalent Al(4), and three equivalent Al(5) atoms. Both Ce(1)-Pt(1) bond lengths are 3.26 Å. Both Ce(1)-Pt(2) bond lengths are 3.23 Å. Both Ce(1)-Pt(3) bond lengths are 3.25 Å. The Ce(1)-Al(1) bond length is 3.51 Å. The Ce(1)-Al(2) bond length is 3.23 Å. There are two shorter (3.30 Å) and one longer (3.59 Å) Ce(1)-Al(3) bond length. There are two shorter (3.46 Å) and one longer (3.58 Å) Ce(1)-Al(4) bond length. There are two shorter (3.37 Å) and one longer (3.45 Å) Ce(1)-Al(5) bond length. There are three inequivalent Pt sites. In the first Pt site, Pt(1) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Al(1), three equivalent Al(3), and three equivalent Al(5) atoms. The Pt(1)-Al(1) bond length is 2.52 Å. There is one shorter (2.57 Å) and two longer (2.64 Å) Pt(1)-Al(3) bond lengths. There is one shorter (2.52 Å) and two longer (2.59 Å) Pt(1)-Al(5) bond lengths. In the second Pt site, Pt(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Al(2), one Al(3), two equivalent Al(1), and three equivalent Al(4) atoms. The Pt(2)-Al(2) bond length is 2.50 Å. The Pt(2)-Al(3) bond length is 2.66 Å. Both Pt(2)-Al(1) bond lengths are 2.68 Å. There is one shorter (2.54 Å) and two longer (2.68 Å) Pt(2)-Al(4) bond lengths. In the third Pt site, Pt(3) is bonded in a 9-coordinate geometry to two equivalent Ce(1), one Al(4), one Al(5), two equivalent Al(1), and three equivalent Al(2) atoms. The Pt(3)-Al(4) bond length is 2.65 Å. The Pt(3)-Al(5) bond length is 2.57 Å. Both Pt(3)-Al(1) bond lengths are 2.73 Å. There are two shorter (2.52 Å) and one longer (2.55 Å) Pt(3)-Al(2) bond length. There are five inequivalent Al sites. In the first Al site, Al(1) is bonded in a 5-coordinate geometry to one Ce(1), one Pt(1), two equivalent Pt(2), and two equivalent Pt(3) atoms. In the second Al site, Al(2) is bonded in a 4-coordinate geometry to one Ce(1), one Pt(2), and three equivalent Pt(3) atoms. In the third Al site, Al(3) is bonded to three equivalent Ce(1), one Pt(2), and three equivalent Pt(1) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe3Pt4 tetrahedra. In the fourth Al site, Al(4) is bonded to three equivalent Ce(1), one Pt(3), and three equivalent Pt(2) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe3Pt4 tetrahedra. In the fifth Al site, Al(5) is bonded to three equivalent Ce(1), one Pt(3), and three equivalent Pt(1) atoms to form a mixture of distorted corner, edge, and face-sharing AlCe3Pt4 tetrahedra.