Baird's rule

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With the Baird Rule , named after N. Colin Baird , can be determined whether it is at a chemical compound to an aromatic These triplet molecule.

A planar, cyclically fully conjugated triplet molecule is particularly stable with [4n] π electrons and is called an aromatic.

See also

Individual evidence

  1. ↑ N. Colin Baird: Quantum organic photochemistry. II. Resonance and aromaticity in the lowest 3 ππ * state of cyclic hydrocarbons . In: Journal of the American Chemical Society . 94, No. 14, 1972, pp. 4941-4948. doi : 10.1021 / ja00769a025 .
  2. ^ Henrik Ottosson: Organic photochemistry: Exciting excited-state aromaticity . In: Nature Chemistry . No. 4, 2012, pp. 969-971. doi : 10.1038 / nchem.1518 .