Cover Picture: Cobalt-Mediated Cyclooligomerization Reactions of Borylacetylenes (Eur. J. Inorg. Chem. 13/2004)

The cover picture shows the molecular structure of a (1,3-diboryl-2,4-diphenylcyclobutadiene)(cyclopentadienyl)cobalt complex obtained in an attempt to trimerize 1-(dithiocatecholboryl)-2-phenylacetylene with CpCo(CO)2. Details are discussed in the article by W. Siebert et al. on p. 2635 ff.