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Issue 26, 2005
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Well-defined imidotitanium alkyl cations: agostic interactions, migratory insertion vs. [2+2] cycloaddition, and the first structurally authenticated AlMe3 adduct of any transition metal alkyl cation

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Abstract

The imidotitanium alkyl cations [Ti(NtBu)(Me3[9]aneN3)R]+ (R = Me (3+) or CH2SiMe3 (4+)) possess either a very weak α-agostic or β-Si–C agostic interactions, respectively, according to 13C and 29Si NMR and DFT studies; reaction of 4+ with iPrNCNiPr gives totally selective insertion into the Ti–alkyl bond; reaction of 3+ with AlMe3 gives the first structurally characterised AlMe3 adduct of a transition metal alkyl cation (Me3[9]aneN3 = 1,4,7-trimethyltriazacyclononane).

Graphical abstract: Well-defined imidotitanium alkyl cations: agostic interactions, migratory insertion vs. [2+2] cycloaddition, and the first structurally authenticated AlMe3 adduct of any transition metal alkyl cation

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Publication details

The article was received on 01 Apr 2005, accepted on 05 May 2005 and first published on 01 Jun 2005


Article type: Communication
DOI: 10.1039/B504567C
Citation: Chem. Commun., 2005,0, 3313-3315

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    Well-defined imidotitanium alkyl cations: agostic interactions, migratory insertion vs. [2+2] cycloaddition, and the first structurally authenticated AlMe3 adduct of any transition metal alkyl cation

    P. D. Bolton, E. Clot, A. R. Cowley and P. Mountford, Chem. Commun., 2005, 0, 3313
    DOI: 10.1039/B504567C

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