Redox-active tubular frameworks with TTF: self-assemblies by complementary hydrogen-bonds and π-stacks of TTF-phenyluracil

Abstract

Tubular frameworks of a tetrathiafulvalene (TTF) based electron-donor with a N1-phenyluracil moiety were constructed by strong self-assembling abilities. The uracil moiety formed the reversed Watson–Crick type hydrogen-bond pair. The TTF moiety exhibited C–H⋯X hydrogen-bonds, S⋯S interactions, and uniform π-stack. The phenyl group formed a herring-bone array by the edge-to-face interaction. These multiple intermolecular interactions established channels of ca. 4 × 8 Å. The cavities were filled with crystalline solvent molecules (tetrahydrofuran and pyridine), which were fixed on the framework by the C–H⋯X hydrogen-bonds.