Jump to main content
Jump to site search

Issue 4, 2001
Previous Article Next Article

Reactions of nickelocene with an Ru5 cluster: crystal structures of two nickel–ruthenium clusters containing C2ligands

Author affiliations

Abstract

Reactions of nickelocene with Ru55-C2)(μ-SMe)2(μ-PPh2)2(CO)11 have given NiRu56-C2)(μ-SMe)2(μ-PPh2)2(CO)9Cp2 and Ni2Ru46-C2)(μ-SMe)2(μ-PPh2)2(CO)8Cp2 whose molecular structures have been determined. The NiRu5 cluster is related to other heterometallic clusters containing FeRu5, Ru6 or Co2Ru5 cores which contain two edge-fused squares supporting the C2 ligand, one carbon occupying the centre of each square face while retaining the C–C bond. However, there is no formal M–M interaction along the shared edge. Substitution of CO groups by Cp on one Ru atom has occurred. The structure of the Ni2Ru4 cluster is similar, with the six-membered ring having the boat conformation. The C2 ligand takes up two disordered (1  1) positions, either parallel or perpendicular to the non-bonding Ni ⋯ Ni vector. Extended Hückel and density functional calculations have been carried out on Ni2Ru46-C2)(μ-SMe)2(μ-PPh2)2(CO)8Cp2 to rationalise these two observed coordination modes of the C2 unit to the metal framework. Results suggest that the two arrangements are isoenergetic and that the M–C bonding follows the Dewar–Chatt–Duncanson model as previously found for related C2-containing polynuclear organometallic clusters.

Graphical abstract: Reactions of nickelocene with an Ru5 cluster: crystal structures of two nickel–ruthenium clusters containing C2 ligands

Back to tab navigation

Supplementary files

Article information


Submitted
29 Jun 2000
Accepted
07 Dec 2000
First published
31 Jan 2001

J. Chem. Soc., Dalton Trans., 2001, 414-422
Article type
Paper

Reactions of nickelocene with an Ru5 cluster: crystal structures of two nickel–ruthenium clusters containing C2 ligands

C. J. Adams, M. I. Bruce, J. Halet, S. Kahlal, B. W. Skelton and A. H. White, J. Chem. Soc., Dalton Trans., 2001, 414
DOI: 10.1039/B005210H

Search articles by author

Spotlight

Advertisements