Claus' benzene

Claus' benzene (C6H6) is a hypothetical hydrocarbon and an isomer of benzene.[1] It was proposed by Adolf Karl Ludwig Claus in 1867 [2] as a possible structure for benzene at a time when the structure of benzene was still being debated. The molecule can be described as a hexagon with carbon atoms positioned at the corners, with each carbon connected to its two ortho carbons (the nearest carbons) and the one para carbon connected diametrically.[3] High strain energy makes its synthesis impossible.[4]

References

  1. ↑ Organic Reactions And Their Mechanisms P S Kalsi 2000
  2. ↑ A. Claus, Theoretische Betrachtungen und deren Anwendungen zur Systematik der organischen Chemie, Freiburg, 1867, p. 207
  3. ↑ Warren, D. S.; Gimarc, B. M. (1992). "Valence isomers of benzene and their relationship to isomers of isoelectronic P6". Journal of the American Chemical Society 114 (13): 5378. doi:10.1021/ja00039a058.
  4. ↑ Hoffmann, R.; Hopf, H. (2008). "Learning from molecules in distress". Angewandte Chemie (International ed. in English) 47 (24): 4474–4481. doi:10.1002/anie.200705775. PMID 18418829.