LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Kekulene. Molecular model of the polycyclic aromatic hydrocarbon kekulene (C48.H24), an example of a circulene. It was first synthesized in 1978. It is named after August Kekul , who discovered the structure of the benzene ring. Atoms are represented as spheres and are colour-coded: carbon (grey) and hydrogen (white). Illustration.
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