PuMnAl is Frank-Kasper $\mu$ Phase-derived structured and crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. In the second Pu site, Pu(2) is bonded in a 16-coordinate geometry to one Pu(2); three Pu(1,1); one Mn(1); two equivalent Mn(3); four equivalent Mn(2); two equivalent Al(2); and three equivalent Al(1) atoms. In the third Pu site, Pu(2) is bonded in a 16-coordinate geometry to one Pu(2); three Pu(1,1); one Mn(1); two equivalent Mn(3); four equivalent Mn(2); two equivalent Al(2); and three equivalent Al(1) atoms. In the fourth Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. In the fifth Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. In the sixth Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two Pu(2,2); four Pu(1,1); two equivalent Al(1); and four equivalent Al(2) atoms to form MnPu6Al6 cuboctahedra that share corners with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Mn(1)Pu6Al6 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with eight equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, edges with two equivalent Mn(1)Pu6Al6 cuboctahedra, edges with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, faces with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra, and faces with eight equivalent Al(2)Pu6Mn2Al4 cuboctahedra. In the second Mn site, Mn(2) is bonded to two Pu(1,1); four Pu(2,2); two equivalent Mn(2); two equivalent Mn(3); and two equivalent Al(1) atoms to form MnPu6Mn4Al2 cuboctahedra that share corners with four equivalent Mn(1)Pu6Al6 cuboctahedra, corners with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with six equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with two equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, edges with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, faces with two equivalent Mn(1)Pu6Al6 cuboctahedra, faces with two equivalent Al(2)Pu6Mn2Al4 cuboctahedra, faces with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, and faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra. In the third Mn site, Mn(3) is bonded to two Pu(1,1); four Pu(2,2); four equivalent Mn(2); and two equivalent Al(1) atoms to form MnPu6Mn4Al2 cuboctahedra that share corners with two equivalent Mn(1)Pu6Al6 cuboctahedra, corners with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with eight equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, edges with four equivalent Mn(1)Pu6Al6 cuboctahedra, faces with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra, and faces with eight equivalent Mn(2)Pu6Mn4Al2 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to three Pu(1,1); three equivalent Pu(2); one Mn(1); one Mn(3); two equivalent Mn(2); and two equivalent Al(2) atoms to form AlPu6Mn4Al2 cuboctahedra that share corners with two equivalent Mn(1)Pu6Al6 cuboctahedra, corners with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra, faces with two equivalent Al(1)Pu6Mn4Al2 cuboctahedra, faces with three equivalent Mn(1)Pu6Al6 cuboctahedra, faces with three equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, faces with six equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, and faces with six equivalent Al(2)Pu6Mn2Al4 cuboctahedra. In the second Al site, Al(2) is bonded to two Pu(2,2); four Pu(1,1,1,1); two equivalent Mn(1); two equivalent Al(1); and two equivalent Al(2) atoms to form AlPu6Mn2Al4 cuboctahedra that share corners with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with six equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, edges with two equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with two equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, faces with four equivalent Mn(1)Pu6Al6 cuboctahedra, faces with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, and faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra.
PuMnAl is Frank-Kasper $\mu$ Phase-derived structured and crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Pu sites. In the first Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. The Pu(1)-Pu(1) bond length is 3.44 Å. There is one shorter (3.28 Å) and two longer (3.34 Å) Pu(1)-Pu(2) bond lengths. The Pu(1)-Mn(3) bond length is 3.01 Å. Both Pu(1)-Mn(1) bond lengths are 3.23 Å. Both Pu(1)-Mn(2) bond lengths are 2.99 Å. All Pu(1)-Al(1) bond lengths are 3.16 Å. All Pu(1)-Al(2) bond lengths are 3.19 Å. In the second Pu site, Pu(2) is bonded in a 16-coordinate geometry to one Pu(2); three Pu(1,1); one Mn(1); two equivalent Mn(3); four equivalent Mn(2); two equivalent Al(2); and three equivalent Al(1) atoms. The Pu(2)-Pu(2) bond length is 2.89 Å. Both Pu(2)-Pu(1) bond lengths are 3.34 Å. The Pu(2)-Mn(1) bond length is 3.24 Å. Both Pu(2)-Mn(3) bond lengths are 3.10 Å. There are two shorter (3.03 Å) and two longer (3.07 Å) Pu(2)-Mn(2) bond lengths. Both Pu(2)-Al(2) bond lengths are 3.23 Å. There is one shorter (3.11 Å) and two longer (3.23 Å) Pu(2)-Al(1) bond lengths. In the third Pu site, Pu(2) is bonded in a 16-coordinate geometry to one Pu(2); three Pu(1,1); one Mn(1); two equivalent Mn(3); four equivalent Mn(2); two equivalent Al(2); and three equivalent Al(1) atoms. There is one shorter (3.28 Å) and two longer (3.34 Å) Pu(2)-Pu(1,1) bond lengths. The Pu(2)-Mn(1) bond length is 3.24 Å. Both Pu(2)-Mn(3) bond lengths are 3.10 Å. There are two shorter (3.03 Å) and two longer (3.07 Å) Pu(2)-Mn(2) bond lengths. Both Pu(2)-Al(2) bond lengths are 3.23 Å. There is one shorter (3.11 Å) and two longer (3.23 Å) Pu(2)-Al(1) bond lengths. In the fourth Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. The Pu(1)-Mn(3) bond length is 3.01 Å. Both Pu(1)-Mn(1) bond lengths are 3.23 Å. Both Pu(1)-Mn(2) bond lengths are 2.99 Å. All Pu(1)-Al(1) bond lengths are 3.16 Å. All Pu(1)-Al(2) bond lengths are 3.19 Å. In the fifth Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. The Pu(1)-Pu(1) bond length is 3.44 Å. The Pu(1)-Mn(3) bond length is 3.01 Å. Both Pu(1)-Mn(1) bond lengths are 3.23 Å. Both Pu(1)-Mn(2) bond lengths are 2.99 Å. All Pu(1)-Al(1) bond lengths are 3.16 Å. All Pu(1)-Al(2) bond lengths are 3.19 Å. In the sixth Pu site, Pu(1) is bonded in a 16-coordinate geometry to one Pu(1), three equivalent Pu(2), one Mn(3), two equivalent Mn(1), two equivalent Mn(2), three equivalent Al(1), and four equivalent Al(2) atoms. The Pu(1)-Mn(3) bond length is 3.01 Å. Both Pu(1)-Mn(1) bond lengths are 3.23 Å. Both Pu(1)-Mn(2) bond lengths are 2.99 Å. All Pu(1)-Al(1) bond lengths are 3.16 Å. All Pu(1)-Al(2) bond lengths are 3.19 Å. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to two Pu(2,2); four Pu(1,1); two equivalent Al(1); and four equivalent Al(2) atoms to form MnPu6Al6 cuboctahedra that share corners with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Mn(1)Pu6Al6 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with eight equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, edges with two equivalent Mn(1)Pu6Al6 cuboctahedra, edges with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, faces with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra, and faces with eight equivalent Al(2)Pu6Mn2Al4 cuboctahedra. Both Mn(1)-Al(1) bond lengths are 2.65 Å. There are two shorter (2.67 Å) and two longer (2.71 Å) Mn(1)-Al(2) bond lengths. In the second Mn site, Mn(2) is bonded to two Pu(1,1); four Pu(2,2); two equivalent Mn(2); two equivalent Mn(3); and two equivalent Al(1) atoms to form MnPu6Mn4Al2 cuboctahedra that share corners with four equivalent Mn(1)Pu6Al6 cuboctahedra, corners with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with six equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with two equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, edges with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, faces with two equivalent Mn(1)Pu6Al6 cuboctahedra, faces with two equivalent Al(2)Pu6Mn2Al4 cuboctahedra, faces with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, and faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra. There is one shorter (2.71 Å) and one longer (2.77 Å) Mn(2)-Mn(2) bond length. There is one shorter (2.67 Å) and one longer (2.70 Å) Mn(2)-Mn(3) bond length. Both Mn(2)-Al(1) bond lengths are 2.62 Å. In the third Mn site, Mn(3) is bonded to two Pu(1,1); four Pu(2,2); four equivalent Mn(2); and two equivalent Al(1) atoms to form MnPu6Mn4Al2 cuboctahedra that share corners with two equivalent Mn(1)Pu6Al6 cuboctahedra, corners with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with eight equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, edges with four equivalent Mn(1)Pu6Al6 cuboctahedra, faces with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra, and faces with eight equivalent Mn(2)Pu6Mn4Al2 cuboctahedra. Both Mn(3)-Al(1) bond lengths are 2.61 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to three Pu(1,1); three equivalent Pu(2); one Mn(1); one Mn(3); two equivalent Mn(2); and two equivalent Al(2) atoms to form AlPu6Mn4Al2 cuboctahedra that share corners with two equivalent Mn(1)Pu6Al6 cuboctahedra, corners with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra, faces with two equivalent Al(1)Pu6Mn4Al2 cuboctahedra, faces with three equivalent Mn(1)Pu6Al6 cuboctahedra, faces with three equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, faces with six equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, and faces with six equivalent Al(2)Pu6Mn2Al4 cuboctahedra. Both Al(1)-Al(2) bond lengths are 2.74 Å. In the second Al site, Al(2) is bonded to two Pu(2,2); four Pu(1,1,1,1); two equivalent Mn(1); two equivalent Al(1); and two equivalent Al(2) atoms to form AlPu6Mn2Al4 cuboctahedra that share corners with four equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, corners with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, corners with four equivalent Al(1)Pu6Mn4Al2 cuboctahedra, corners with six equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, edges with two equivalent Al(2)Pu6Mn2Al4 cuboctahedra, edges with four equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with two equivalent Mn(2)Pu6Mn4Al2 cuboctahedra, faces with two equivalent Mn(3)Pu6Mn4Al2 cuboctahedra, faces with four equivalent Mn(1)Pu6Al6 cuboctahedra, faces with four equivalent Al(2)Pu6Mn2Al4 cuboctahedra, and faces with six equivalent Al(1)Pu6Mn4Al2 cuboctahedra. There is one shorter (2.67 Å) and one longer (2.81 Å) Al(2)-Al(2) bond length.