Dimerisation and reactivity of HC≡CC≡CFc at ruthenium centres

M.I. Bruce, M. Jevric, Brian Skelton, Allan White

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Abstract

In contrast to the simple diynyl complexes formed in reactions between HC CC CFc and MCl(dppe) Cp*; (M = Fe, Ru), an analogous reaction with RuCl(PPh3)(2)Cp*: in the presence of KPF6 and dbu resulted in dimerisation of the diyne at the Ru centre to afford a mixture of [Ru(eta(1),eta(2)-C(C CFc)=C(L)CH=CC=CHFc)(PPh3)Cp*]PF6 (L = dbu 1, PPh3 2). Similar reactions with RuCl(PR3)(2)L gave [Ru{eta(1),eta(2)-C(C CFc)=C (dbu)CH=CC=CHFc}(PR3)L]PF6(L = Cp, R = Ph 3, m-tol 4; L =.eta(5)-C9H7, R = Ph 5). The reaction between 3 and 12, followed by crystallization of the paramagnetic product from MeOH, afforded the dicationic [Ru{C (C CFc)C(dbu)CH=C(OMe)C(OMe)=CHFc}(PPh3)Cp](I-3)(2) 6. The molecular structures of 2 center dot 2CH(2)Cl(2) and 6.S (S = 2CH(2)Cl(2), C6H6) were determined by single-crystal XRD studies. (c) 2010 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)461-467
JournalJournal of Organometallic Chemistry
Volume696
DOIs
Publication statusPublished - 2011

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