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Issue 10, 2004
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Preparation, structures and some reactions of novel diynyl complexes of iron and ruthenium

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Abstract

Reactions between HC[triple bond, length as m-dash]CC[triple bond, length as m-dash]CSiMe3 and several ruthenium halide precursors have given the complexes Ru(C[triple bond, length as m-dash]CC[triple bond, length as m-dash]CSiMe3)(L2)Cp′ [Cp′ = Cp, L = CO (1), PPh3 (2); Cp′ = Cp*, L2 = dppe (3)]. Proto-desilylation of 2 and 3 have given unsubstituted buta-1,3-diyn-1-yl complexes Ru(C[triple bond, length as m-dash]CC[triple bond, length as m-dash]CH)(L2)Cp′ [Cp′ = Cp, L = PPh3 (5); Cp′ = Cp*, L2 = 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[triple bond, length as m-dash]CC[triple bond, length as m-dash]CAu(PR3)}(L2)Cp′ [Cp′ = Cp, L = PPh3, R = Ph (7); Cp′ = Cp*, L2 = dppe, R = Ph (8), tol (9)]. The asymmetrically end-capped {Cp(Ph3P)2Ru}C[triple bond, length as m-dash]CC[triple bond, length as m-dash]C{Ru(dppe)Cp*} (10) was obtained from Ru(C[triple bond, length as m-dash]CC[triple bond, length as m-dash]CH)(dppe)Cp* and RuCl(PPh3)2Cp. Single-crystal X-ray structural determinations of 1–3 and 6–9 are reported, with a comparative determination of the structure of Fe(C[triple bond, length as m-dash]CC[triple bond, length as m-dash]CSiMe3)(dppe)Cp* (4), and those of a fifth polymorph of {Ru(PPh3)2Cp}2(μ-C[triple bond, length as m-dash]CC[triple bond, length as m-dash]C) (12), and {Ru(dppe)Cp}2(μ-C[triple bond, length as m-dash]CC[triple bond, length as m-dash]C) (13).

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

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Submitted
12 Dec 2003
Accepted
23 Mar 2004
First published
19 Apr 2004

Dalton Trans., 2004, 1601-1609
Article type
Paper

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, B. W. Skelton, M. E. Smith, L. Toupet and A. H. White, Dalton Trans., 2004, 1601
DOI: 10.1039/B316297B

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