Preparation, structures and some reactions of novel diynyl complexes of iron and ruthenium

M.I. Bruce, B.G. Ellis, M. Gaudio, C. Lapinte, G. Melino, F. Paul, Brian Skelton, M.E. Smith, L. Toupet, Allan White

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72 Citations (Web of Science)


Reactions between HC=CC=CSiMe3 and several ruthenium halide precursors have given the complexes Ru(C=CC=CSiMe3)(L-2) Cp' [Cp' = Cp, L = CO (1), PPh3 (2); Cp' = Cp*, L-2 = dppe (3)]. Proto-desilylation of 2 and 3 have given unsubstituted buta-1,3-diyn-1-yl complexes Ru(C=CC=CH)(L-2) Cp' [Cp' = Cp, L = PPh3 (5); Cp' = Cp*, L-2 = dppe (6)]. Replacement of H in 5 or 6 with Au(PR3) groups was achieved in reactions with AuCl(PR3) in the presence of KN(SiMe3)(2) to give Ru(C=CC=CAu(PR3)}(L-2) Cp' [Cp' = Cp, L = PPh3, R = Ph (7); Cp' = Cp*, L-2 = dppe, R = Ph (8), tol (9)]. The asymmetrically end-capped {Cp(Ph3P)(2)Ru} C=CC=C{Ru(dppe) Cp*} (10) was obtained from Ru(C=CC=CH)(dppe) Cp* and RuCl(PPh3)(2)Cp. Single-crystal X-ray structural determinations of 1 - 3 and 6 - 9 are reported, with a comparative determination of the structure of Fe(C=CC=CSiMe3)(dppe) Cp* (4), and those of a fifth polymorph of {Ru(PPh3)(2)Cp}(2)(mu-C=CC=C) (12), and {Ru(dppe) Cp}(2)(mu-C=CC=C) (13).
Original languageEnglish
Pages (from-to)1601-1609
JournalDalton Transactions
Issue number10
Publication statusPublished - 2004


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