Abstract:We demonstrated the computational study of the π-congestion effects in benzene, naphthalane, anthracene, teteracene, and pentacene dimers close with two positions at Ca···Ca’ and Cb· ··Cb’ to elucidate the singlet biradical characters as well as the stacked antiaromaticity. By extending the π-system from benzene to pentacene, the singlet biradical character increase whereas the stacked antiaromaticity decrease at near the transition state of [4+4]pericyclic reaction in ground state. Especially, the pentacene di… Show more
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