Synthesis of Early Transition Metal Complexes and Activation of Small Molecules

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We synthesized electron-deficient metal complexes, which consists of phenoxide-derived multidentate ligands, hydrides, and early transition metals. We have investigated activation of small molecules with this type of complexes by taking advantage of their strong reducing power, electron-deficient metal centers, and the synergetic effect of them. We have found (1) cleavage of the N≡N triple bond, (2) reductive coupling of carbon monoxide to give the CO hexamer, and (3) catalytic conversion of CO2 into CH4.