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DOI: 10.1039/A702837G (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1997, 3335-3342

Cluster build-up using the [Ru(η5-C5H5)(MeCN)3 ]+ cation; synthesis and structural characterisation of some cyclopentadienyl-substituted hexa- and hepta-nuclear ruthenium carbido clusters[hair space]

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Jack Lewis, Catherine A. Morewood, Paul R. Raithby and M. Carmen Ramirez de Arellano

Abstract

The reaction of the dianion [Ru5C(CO)14]2- with 2 equivalents of [Ru(η5-C5H5)(MeCN)3] + afforded two new clusters, the hexanuclear anion [Ru6C(CO)14(η5-C5H 5)]- 1 and the neutral heptanuclear cluster [Ru7C(CO)14(η5-C5H 5)2] 2 in high yields. In a similar reaction the hexanuclear dianion [Ru6C(CO)16]2- may be ‘capped’ by [Ru(η5-C5H5)(MeCN)3] + to afford good yields of both the heptanuclear monoanion [Ru7C(CO)16(η5-C5H 5)]- 3 and the neutral cluster 2. The clusters 1, 2 and 3 have been fully characterised by both spectroscopic and crystallographic methods. The crystal structures show that the metal framework of all three clusters is based on a central Ru6C octahedral core. In 1 one of the core atoms is co-ordinated to an η5-C5H5 ligand, while in 2 an additional Ru(η5-C5H5) group caps one triangular face of the octahedron to give a capped octahedral framework. In 3 the single η5-C5H5 ligand is co-ordinated to the capping Ru atom in the capped octahedral framework.

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