zethrene
Sign in to saveZethrene ('''''') is a polycyclic aromatic hydrocarbon consisting of two phenalene units fused together. According to Clar's rule, the two exterior naphthalene units are truly aromatic and the two central double bonds are not aromatic at all. For this reason the compound is of some interest to academic research. Zethrene has a deep-red color and it is light sensitive - complete decomposition under a sunlight lamp occurs within 12 hours. The melting point is 262 °C.
Article
3 sectionsContents
- Synthesis
- Structure
- References
Zethrene ('''''') is a polycyclic aromatic hydrocarbon consisting of two phenalene units fused together. According to Clar's rule, the two exterior naphthalene units are truly aromatic and the two central double bonds are not aromatic at all. For this reason the compound is of some interest to academic research. Zethrene has a deep-red color and it is light sensitive - complete decomposition under a sunlight lamp occurs within 12 hours. The melting point is 262 °C.
==Synthesis== The compound was originally synthesized by Erich Clar in 1955 from acenaphthene in one method and from chrysene in another. Mitchell and Sondheimer prepared the compound from a benzannulated [[cyclodecapentaene|[10]annulene]].