Keywords: Diporphyrins / Electrochemistry / UV/Vis spectroscopy / Electrostatic interactions / ConjugationA novel series of biaryl-type, meso,meso-linked and planar, triply fused diporphyrin derivatives was prepared and fully characterized together with the corresponding monoporphyrin control compounds. They feature peripheral meso-3-cyanophenyl and meso-3,5-cyanophenyl groups, which have previously been shown to undergo transformation into malonates without perturbation of the porphyrin core and subsequent Bingel addition to fullerene C 60 . The tetrapyrrolic metal binding sites in the diporphyrin arrays are either complexed to two Zn II or Cu II ions, or, in a mixed coordination, to one Cu II and one Zn II ion; alternatively, one or both sites remain unoccupied. The interaction between the differen-
Rebek imide-type molecular clefts with pi-stacking platforms attached to the imide scaffold by an acetylene linker have been prepared by Sonogashira cross-coupling. In the solid state, a novel dimerisation mode for this class of imide receptors was found by crystal structure analysis, whereas efficient 1 : 1 complexation with 9-ethyladenine was observed in CDCl3 solution.
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