Ruthenium arenes characteristics

Cobaltocenium calix[4]arene receptors, characteristics, 12,475 Cobaltocenium-metallacarborane salts, preparation, 3, 23 Cobaltocenium receptors, characteristics, 12, 474 Cobalt phosphines, as supports, 12, 683 Cobalt-platinum nanoparticles, preparation, 12, 74 Cobalt-ruthenium clusters, as heterogeneous catalyst precursors, 12, 768... 

More specifically, calculations have suggested that the ruthenium-alkyl complex in Equation 6.53 reacts with arene to exchange covalent ligands by a process closely related to a a-bond metathesis mechanism. Computational studies of the reactions of a simple iridium-alkyl and alkoxo complex with alkanes to generate new metal-alkyl complexes have also suggested that a mechanism is followed that involves many of the characteristics of a classic a-bond metathesis transition state. However, calculations of the mechanisms of these two processes imply that the transition state contains some degree of M-H bonding. 

Two main families of organometallic ruthenium(II)-arene complexes (see Fig. 43.1) were developed and studied by Sadler [3, 4] (RM complexes) and Dyson [5, 6] (RAPTA complexes), in which the basic structures present the piano-stool geometry and their reactivity toward biological targets is based on the leaving chloride ligands, as happens with cisplatin. Nevertheless, these two families of compounds besides the similarity of their structure present different characteristics. 

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