Novel neo-confused octaphyrin(184.108.40.206.220.127.116.11) (1) was synthesized by oxidative ring closure of an octapyrrane bearing two terminal confused pyrroles. Crystal structures of its Zn(II) and Cu(II) complexes (2 and 3) show a figure-of-eight conformation with unique mononuclear coordination structures. Photophysical data and theoretical calculations suggest that the neo-confused octaphyrin 1 is a 34π electron conjugated species showing nonaromaticity. Coordination of copper and zinc ions results in the further narrowing of the HOMO-LUMO gaps.
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