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Reactivity of a Lewis Base Supported Thorium Terminal Imido Metallocene toward Small Organic Molecules

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The Lewis base supported thorium terminal imido metallocene (η5-C5Me5)2Th═N(mesityl)(DMAP) (1) reacts with various small organic molecules such as thiazoles, silanes, internal acetylenes, nitriles, ketones, CS2, isothiocyanates, carbodiimides, lactides, organic azides,… Click to show full abstract

The Lewis base supported thorium terminal imido metallocene (η5-C5Me5)2Th═N(mesityl)(DMAP) (1) reacts with various small organic molecules such as thiazoles, silanes, internal acetylenes, nitriles, ketones, CS2, isothiocyanates, carbodiimides, lactides, organic azides, and diazoalkane derivatives. For example, while 1 forms the adduct (η5-C5Me5)2Th═N(mesityl)(OPPh3) (2) with Ph3PO, deprotonation occurs between 1 and thiazole to give the amido thiazolyl complex (η5-C5Me5)2Th(NHmesityl)(C3H2NS) (3). Moreover, the five-membered metallaheterocycle (η5-C5Me5)2Th[κ2-N,C-{N(2-CH2-4,6-Me2C6H2)(SiH2Ph)}](DMAP) (4) is isolated from a mixture of 1 and PhSiH3. In addition, treatment of 1 with PhCN, Ph2CHCN, or Me3SiCN gives the zwitterionic complex (η5-C5Me5)2Th[κ-N-{NCPh(N(mesityl))}](DMAP) (5), and iminato compounds (η5-C5Me5)2Th[N(mesityl)C(CHPh2)NH](N═C═CPh2) (6) and (η5-C5Me5)2Th[2-{N═C(SiMe3)}-4-Me2NC5H3N](NC) (7), respectively. Furthermore, reaction of 1 with PhC≡CMe and Me3SiC≡CC≡CSiMe3 afford the amido pyrid...

Keywords: supported thorium; c5me5 2th; thorium terminal; base supported; lewis base; terminal imido

Journal Title: Organometallics
Year Published: 2017

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