Monomeric and extended oxo-centered triruthenium clusters

The chemistry of mu -oxo-centered trinuclear ruthenium-carboxylate clusters , of general formula [Ru3O(RCO2)(6)L-3]", has been dealt with special empha sis on their spectroscopic and electrochemical properties, as well as their capability to form ligand-bridged oligomeric structures exhibiting pronoun ced electronic delocalization. Mixed systems containing trinuclear rutheniu m clusters attached to transition metal complexes and porphyrins are also f ocused upon in this review article, from the point of view of cooperative i nteractions and supramolecular chemistry. The role of the trinuclear cluste rs as electron donor/acceptor groups, and their relevance in biomimetic sys tems, redox catalysis and molecular devices have been discussed, (C) 2001 E lsevier Science B.V. All rights reserved.