Heterosite reactivity of cobalt-rhodium mixed- metal clusters

Abstract It has been established that reactions of cobalt-rhodium mixed-metal clusters with nucleophiles such as PEt 3 , THF, MeCN and Cl − occur on the rhodium site, with alkynes on the cobalt site. Several reversible tetranuclear-dinuclear transformations were observed with preferential retainment of the cobalt-rhodium bond.