Issue 23, 2000
From the journal:

Journal of the Chemical Society, Dalton Transactions

Use of the monocationic fragment [Ru(η5-C5H5)(MeCN)3]+ as an ionic coupling reagent in the synthesis of mixed-metal phosphine clusters †

Radchada Buntem,a   John F. Gallagher,a   Jack Lewis,a   Paul R. Raithby ,‡*a   Moira-Ann Renniea  and  Gregory P. Shieldsa  

* Corresponding authors

a Department of Chemistry, Lensfield Road, Cambridge, UK
E-mail: p.r.raithby@bath.ac.uk

Abstract

Deprotonation of [Os3H2(CO)10(PPh3)], with DBU (1,8-diazabicyclo[5.4.0]undec-7-ene), and subsequent treatment with the ionic coupling reagent [Ru(η5-C5H5)(MeCN)3][PF6] afforded the tetrahedral cluster [Os3H(CO)10(PPh3){Ru(η5-C5H5)}]. Reduction of the trinuclear osmium cluster [Os3(CO)11(PPh3)] with K/Ph2CO and subsequent coupling with [Ru(η5-C5H5)(MeCN)3][PF6] yielded the pentanuclear clusters [Os3(CO)11(PPh3){Ru(η5-C5H5)}2], [Os3H2(CO)11(PPh3){Ru(η5-C5H5)}2] and the butterfly cluster [Os3H(CO)11(PPh3){Ru(η5-C5H5)}]. In an analogous reaction using [Os3(CO)11{P(OMe)3}] only one complex [Os3(CO)11{P(OMe)3}{Ru(η5-C5H5)}2] was isolated. This undergoes an orthometallation when heated under reflux in toluene to yield the novel spiked tetrahedral cluster [Os3Ru2H(CO)11{P(OMe)3}(η5-C5H5)(μ3-η5-C5H4)]. All the new complexes have been characterised spectroscopically and the molecular and crystal structures of three have been determined by single-crystal X-ray diffraction. The structure of [Os3Ru2H(CO)11{P(OMe)3}(η5-C5H5)(μ3-η5-C5H4)] shows an uncommon μ3-η5-bonding mode for the deprotonated cyclopentadiene ring.

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Article information

DOI
https://doi.org/10.1039/B006746F
Article type
Paper
Submitted
17 Aug 2000
Accepted
09 Oct 2000
First published
15 Nov 2000

J. Chem. Soc., Dalton Trans., 2000, 4297-4303

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Use of the monocationic fragment [Ru(η5-C5H5)(MeCN)3]+ as an ionic coupling reagent in the synthesis of mixed-metal phosphine clusters

R. Buntem, J. F. Gallagher, J. Lewis, P. R. Raithby<img border="0" src="https://www.rsc.org/images/entities/char_200a.gif" alt=" " xmlns="http://www.rsc.org/schema/rscart38" />, M. Rennie and G. P. Shields, J. Chem. Soc., Dalton Trans., 2000, 4297 DOI: 10.1039/B006746F

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