Sunday, February 10, 2013

Interconversion of Quadruply and Quintuply Bonded Molybdenum Complexes by Reductive Elimination and Oxidative Addition of Dihydrogen

Interconversion of Quadruply and Quintuply Bonded Molybdenum Complexes by Reductive Elimination and Oxidative Addition of Dihydrogen: Thumbnail image of graphical abstract
Five plus H2 gives four: UV irradiation of a bis(amidinate) complex with a [(H)Mo[QUAD BOND]Mo(H)] core induces reductive elimination of H2 and formation of a known quintuply bonded Mo[BOND]Mo species (see scheme) that reacts back with H2 to restore [(H)Mo[QUAD BOND]Mo(H)]. UV irradiation of the bis(hydride) species in benzene and toluene gives arene complexes in which the aromatic hydrocarbon bridges the molybdenum atoms. Dipp=2,6-diisopropylphenyl.

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