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Selective Addition of Palladium on the Rim of Open-Cage Fullerenes To Form Mononuclear and Dinuclear Complexes

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posted on 2019-07-15, 11:04 authored by Hao Zhang, Zishuo Zhou, Le Yang, Jie Su, Peng Jin, Liangbing Gan
Open-cage fullerenes having an 11-membered orifice and keto lactone groups on the rim of the orifice reacted with both Pd­(PPh3)4 and Pd­(OAc)2/PPh3 to form a mononuclear palladium(0) complex. Two analogous open-cage fullerenes with 18-membered orifices and carbonyl groups on the rim of the orifice reacted under the same conditions to form dinuclear palladium(0) complexes. Three of the products were characterized by single-crystal X-ray diffraction analysis. In all three structures the palladium is coordinated to a fullerene double bond adjacent to a carbonyl group in an η2 pattern. DFT calculations were carried out to explain the high regioselectivity of the coordination reactions.

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