Reactions of metalloalkynes VII. Protonation of ruthenium ethyne-1,2-diyl complexes

C.S. Griffith, George Koutsantonis, Brian Skelton, Allan White

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Abstract

The acid-base chemistry of some ruthenium ethyne-1,2-diyl complexes, [{Ru(CO)(2)(eta-C5H4R)}(2)(mu(2)-CdropC](R = H, Me) has been investigated. Initial protonation of [{Ru(CO)(2){eta-C5H4R}}(2)(mu(2)-CdropC)] gave the unexpected complex cation, crystallised as the BF4 salt, [{RU(CO)(2)(eta-C5H4R}}(3)(mu(3)-CdropC)][BF4] (R=Me structurally characterised). This synthesis proved to be unreliable but subsequent, careful protonation experiments gave excellent yields of the protonated ethyne-1,2-diyl complexes, [{Ru(CO)(2){eta-C5H4R)}(2)( mu(2)-eta(1):eta(2)-CdropCH)](BF4) (R=Me structurally characterised) which could be deprotonated in high yield to return the starting ethyne-1,2-diyl complexes. (C) 2003 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)198-204
JournalJournal of Organometallic Chemistry
Volume670
Issue number1-2
DOIs
Publication statusPublished - 2003

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