A contracted doubly N-confused dioxohexaphyrin(1.1.1.1.1.0) complex consisting of two paramagnetic copper metals and open-shell π-radical ligand was synthesized as a new multi-heterospin motif. X-ray spectroscopy supported the divalent character of the inner copper centers, and electron paramagnetic resonance and magnetometric studies suggested the presence of unpaired d electrons strongly antiferromagnetically coupled with π-radicals delocalized on the macrocycle. The 25 π non-innocent dioxohexaphyrin ligand allowed the facile interconversion between antiaromatic 24 π and aromatic 26 π species, respectively, upon redox reactions.
The effect of solvent on the polymerization of 3‐hexylthiophene with FeCl3 was evaluated using time‐dependent partial fluorescence yield X‐ray absorption fine structure measurements. FeCl3 acts as a catalyst when the reaction is performed in CHCl3, whereas it behaves as an oxidant in hexane.
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