Syntheses, structures, some reactions, and electrochemical oxidation of ferrocenylethynyl complexes of iron, ruthenium, and osmium

Bruce, M. I., Low, P. J., Hartl, F. ORCID: https://orcid.org/0000-0002-7013-5360, Humphrey, P. A., de Montigny, F., Jevric, M., Lapinte, C., Perkins, G. J., Roberts, R. L., Skelton, B. W. and White, A. H. (2005) Syntheses, structures, some reactions, and electrochemical oxidation of ferrocenylethynyl complexes of iron, ruthenium, and osmium. Organometallics, 24 (22). pp. 5241-5255. ISSN 1520-6041 doi: 10.1021/om050483l

Abstract/Summary

The syntheses and characterizations of several complexes containing ferrocenylethynyl and ferrocene-1,1'-bis(ethynyl) groups attached to M(PP)Cp'[M = Fe, Ru, PP = dppe, Cp'= Cp*; M = Ru, Os, PP = (PPh3)(2), dppe, Cp' = Cp] are described. Reactions with tetracyanoethene have given either tetracyanobuta-1,3-dienyl or eta(3)-allylic derivatives, while addition of Me+ afforded the corresponding vinylidene derivatives. Some electrochemical measurements are discussed in terms of electronic communication between the redox-active M(PP)Cp' groups through the ferrocene nucleus. The molecular structures of 14 of these complexes have been determined by crystallographic methods.