Bullvalene

January 04, 2005
Image of Bullvalene

Bullvalene has a fluxional, or constantly changing, structure. Each carbon atom has an equal probability of being bonded to each of the other carbon atoms, so the proton NMR spectrum is a sharp singlet peak. Bullvalene (so named because early skeptics doubted its existence) can take on any of 1.2 million arrangements.

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