Abstract

Abstract The title compound was synthesized in a similar manner to a simple access to triple-layered [2.2][2.2]paracyclophane. Its structure was elucidated by X-ray crystallographic analysis. The outer naphthalene rings are bent into a boat form and the inner naphthalene ring is bent into a twist form. These naphthalenes are stacked in layers within van der Waals contact. Therefore, there is a strong transannular π-electronic interaction between them, which brings about characteristic bathochromism, hyperchromism, and broadening in the electronic spectrum. These effects are more prominent than those of the double-layered homologue.

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