Insertion of manganese into a C–S bond of dibenzothiophene: a model for homogeneous hydrodesulfurization

Coordination of Mn(CO)3+ to a carbocyclic ring of dibenzothiophene activates a C–S bond to reductive cleavage, affording a novel tetramanganese metallathiacycle 5 that reacts with H2 to form a dimanganese complex 9 containing bridging hydride and thiolate ligands; methylation of 5 followed by hydrogenation results in desulfurization of the dibenzothiophene and formation of [Mn(CO)5(SMe)].

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