Reactivity of a metallacyclopentatriene intermediate: metal-to-ligand-to-metal re-migration of a phosphine ligand versus a 1,2 hydrogen shiftElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b1/b104927p/

Abstract

The reaction of nona-2,7-diyne, deca-2,8-diyne and hex-1-yne with [RuCp(PR₃)(MeCN)₂]PF₆ (R = Cy, Ph, Me) affords, depending on the structure of the alkyne and the substituent of the phosphine ligand, ruthenium metallacyclopentatriene, allyl carbene and/or butadienyl carbene complexes involving either metal-to-ligand-to-metal migration of the phosphine ligand with concomitant C–H activation or a facile 1,2 hydrogen shift.