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 CS bond to reductive cleavage, affording a novel tetraman ganese metallathiacycle 5 that reacts with H-2 to form a dimanganese c omplex 9 containing bridging hydride and thiolate ligands; methylation of 5 followed by hydrogenation results in desulfurization of the dibe nzothiophene and formation of [Mn(CO)(5)(SMe)].