Organic compounds stability

There are many organic compounds stabilized by resonance. As a first example we may cite benzene, in which there is resonance between the two Kekule structures. In this case, the resonance energy could be calculated to give good agreement with the experimental data on the heat of formation of the molecule. Perhaps even more remarkable is the compound KC5H5, which is formed when potassium reacts with ryr/opentadiene. 

Morand, K. Cheng, X. Organic Compound Stability in Large, Diverse Pharmaceutical Screening Collections, in Yan, B., ed.. Analysis and Purification Methods in Combinatorial Chemistry, Wiley, New York, 2003. 

ORGANIC COMPOUND STABILITY IN LARGE, DIVERSE PHARMACEUTICAL SCREENING COLLECTIONS... 

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