Haptotropic Migration from the Six- to the Five-membered Ring of (3a, 7a-Azaborindenyl)tricarbonylchromium Anion.

• J. Pan, J. Wang, M. M. Banaszak Holl, J. W. Kampf, and A. J Ashe. Organometallics 2006 25 3463-3467.
  See: Wang, Jia