Ar'-Cr-Cr-Ar':
bis(η1-2,6-bis(2,6-Di-isopropylphenyl)phenyl)-di-chromium(I)
A molecule with a Quintuple Bond


Notes: note our program can't show it as a quintuple bond
.....it looks like a single bond
Other notes: 1. decomposes above 200o C. 2. dark red. 3. extremely air- and moisture-sensitive


Reference: CCDC: PAZBOI: Nguyen, T., Sutton, A.D., Brynda, M.,
Fettinger, J. C., Long, G. J., Power, P. P,; Science, Vol 310, 2005, p. 844-847.