A nanotube of cyclic porphyrin dimers connected by nonclassical hydrogen bonds and its inclusion of C₆₀ in a linear arrangement

(Figure Presented) Like peas in a pod: X-ray crystallography reveals a self-assembled nanotube of cyclic porphyrin dimers and its inclusion complex with C₆₀ (see picture, N blue, Ni green). The cyclic molecules stack through nonclassical C-H⋯N hydrogen bonds and π-π interactions of pyridyl groups to form the tubular structure. The C₆₀ molecules are linearly arranged to form a supramolecular peapod.