The host-guest complex of 𝐶-methyl resorcin[4]arene with coumarin and thiocoumarin has been characterized by single crystal X-ray diffraction technique. Structural analysis shows that the host forms an infinitie nanotubular array in which the guest coumarin shows a `head to tail’ arrangement of dimers held together by $\pi\ldots \pi$ interaction in the host framework. Similar structural motif is observed when thiocoumarin used as a guest.
