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Reactivity of half-sandwich metal complexes with sterically encumbered N,N′-bis(2,6-diisopropylphenyl) group-substituted carboranylamidinate ligands

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Abstract

Reactions of [Cp*MCl2]2 (Cp* is η5-C5Me5, M = Ir, Rh) with carboranylamidinate ligand CabNH (1a) (CabNH is 1-R1-1,2-C2B10H11, R1 = (DippNH)C(=NDipp), Dipp is diisopropylphenyl) in the presence of the BuLi excess produced 16-electron half-sandwich iridium and rhodium complexes Cp*M(CabN-Dipp) (2a,b) (CabN-Dipp is (DippN)C(=NDipp)(closo-1,2-C2B10H10), M = Ir (a), Rh (b)). Unexpected neutral closo-metallacarboranes closo-[1-R2-3-(η5-Cp*)-3,1,2-MC2B9H10] (3a,b) (R2 = (NHDipp)C(=NDipp), M = Ir (a), Rh (b)) were prepared by the reaction of the deboronated zwitterionic ligand DcabNH (1b) (DcabNH is nido-7-[C(NHR3)2]+[7,8-C2B9H11]−, R3 = Dipp) with [Cp*MCl2]2. All compounds were fully characterized by elemental analysis, IR spectroscopy, mass spectrometry, and NMR spectroscopy. Structures of compounds 1a,b and 3a,b were confirmed by single crystal X-ray diffraction.

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Authors and Affiliations

  1. Shanghai Key Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, 200433, Shanghai, People’s Republic of China

    B. Xu, Z. -J. Yao & G. -X. Jin

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  1. B. Xu
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  2. Z. -J. Yao
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  3. G. -X. Jin
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Correspondence to G. -X. Jin.

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According to the materials of the International Conference “Organometallic and Coordination Chemistry: Fundamentals and Applied Aspects” (Nizhniy Novgorod, September 1–7, 2013).

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 0963–0969, April, 2014.

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Xu, B., Yao, Z.J. & Jin, G.X. Reactivity of half-sandwich metal complexes with sterically encumbered N,N′-bis(2,6-diisopropylphenyl) group-substituted carboranylamidinate ligands. Russ Chem Bull 63, 963–969 (2014). https://doi.org/10.1007/s11172-014-0534-6

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  • DOI: https://doi.org/10.1007/s11172-014-0534-6

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