Mn2Al3 is beta-derived structured and crystallizes in the cubic P4_132 space group. Mn(1) is bonded to three equivalent Mn(1) and nine equivalent Al(1) atoms to form MnMn3Al9 cuboctahedra that share corners with twelve equivalent Al(1)Mn6Al6 cuboctahedra, corners with fifteen equivalent Mn(1)Mn3Al9 cuboctahedra, edges with six equivalent Al(1)Mn6Al6 cuboctahedra, faces with ten equivalent Mn(1)Mn3Al9 cuboctahedra, and faces with fifteen equivalent Al(1)Mn6Al6 cuboctahedra. Al(1) is bonded to six equivalent Mn(1) and six equivalent Al(1) atoms to form distorted AlMn6Al6 cuboctahedra that share corners with eight equivalent Mn(1)Mn3Al9 cuboctahedra, corners with ten equivalent Al(1)Mn6Al6 cuboctahedra, edges with four equivalent Mn(1)Mn3Al9 cuboctahedra, edges with ten equivalent Al(1)Mn6Al6 cuboctahedra, faces with ten equivalent Mn(1)Mn3Al9 cuboctahedra, and faces with fourteen equivalent Al(1)Mn6Al6 cuboctahedra.
Mn2Al3 is beta-derived structured and crystallizes in the cubic P4_132 space group. Mn(1) is bonded to three equivalent Mn(1) and nine equivalent Al(1) atoms to form MnMn3Al9 cuboctahedra that share corners with twelve equivalent Al(1)Mn6Al6 cuboctahedra, corners with fifteen equivalent Mn(1)Mn3Al9 cuboctahedra, edges with six equivalent Al(1)Mn6Al6 cuboctahedra, faces with ten equivalent Mn(1)Mn3Al9 cuboctahedra, and faces with fifteen equivalent Al(1)Mn6Al6 cuboctahedra. All Mn(1)-Mn(1) bond lengths are 2.34 Å. There are a spread of Mn(1)-Al(1) bond distances ranging from 2.59-2.70 Å. Al(1) is bonded to six equivalent Mn(1) and six equivalent Al(1) atoms to form distorted AlMn6Al6 cuboctahedra that share corners with eight equivalent Mn(1)Mn3Al9 cuboctahedra, corners with ten equivalent Al(1)Mn6Al6 cuboctahedra, edges with four equivalent Mn(1)Mn3Al9 cuboctahedra, edges with ten equivalent Al(1)Mn6Al6 cuboctahedra, faces with ten equivalent Mn(1)Mn3Al9 cuboctahedra, and faces with fourteen equivalent Al(1)Mn6Al6 cuboctahedra. There are two shorter (2.65 Å) and four longer (2.67 Å) Al(1)-Al(1) bond lengths.