Photochromic switching of a [4n] π electron system

Hückel’s [4n+2] π electron rule for aromaticity is reversed in the first excited state of cyclic conjugated annulenes. Molecules with [4n] π electrons show Baird-aromaticity, while molecules with [4n+2] π electrons are Baird-antiaromati. Biphenylene can be described by both Hückel-antiaromatic and H...

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Format: Thesis
Published: 2022-05-20
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