Construction and Functions of the Unsaturated Bonds between Heavier Main Group Elements and Transition Metals

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We directed our efforts toward synthesis and improvement of the reactivity of complexes having unsaturated bonds between transition metals and silicon or germanium. As a result, we succeeded in greatly enhancing the reactivity of the unsaturated bonds by introduction of the smallest substituent, hydrogen, onto the silicon or germanium, and revealed a variety of unique reaction modes of them toward organic and inorganic small molecules. We also found that these unsaturated bonds activate various intramolecular bonds to cause some unprecedented dynamic behaviors and rearrangements.