Molecule of the Week

Bullvalene

January 3, 2005

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.

Get more information on this molecule from CAS (Chemical Abstracts Service)