Issue 9, 2009
From the journal:

Dalton Transactions

Synthesis and structure of indenyl rhodium(I) complexes containing unsaturated phosphines: catalyst precursors for alkene hydroboration†

Christian N. Garon,a   Daniel I. McIsaac,a   Christopher M. Vogels,a   Andreas Decken,b   Ian D. Williams,c   Christian Kleeberg,d   Todd B. Marder*d  and  Stephen A. Westcott*a  

* Corresponding authors

a Department of Chemistry, Mount Allison University, Sackville, Canada
E-mail: swestcott@mta.ca
Fax: +1 506 364-2313
Tel: +1 506 364 2372

b Department of Chemistry, University of New Brunswick, Fredericton, Canada

c Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong

d Department of Chemistry, Durham University, South Road, Durham, UK
E-mail: todd.marder@durham.ac.uk
Fax: +44 191 384 4737
Tel: +44 191 334 2037

Abstract

The indenyl compound (η5-C9H7)Rh(coe)2 (1, coe = cis-cyclooctene) has been prepared as a thermally stable alternative to the diethylene derivative (η5-C9H7)Rh(η2-H2C[double bond, length as m-dash]CH2)2. Compound 1 reacts with unsaturated phosphines Ph2PR (R = CH[double bond, length as m-dash]CH2, 2; CH2CH[double bond, length as m-dash]CH2, 3; and C[triple bond, length as m-dash]C-tert-Bu, 4) to give complexes of the type (η5-C9H7)Rh(Ph2PR)2, where bonding occurs through the phosphorus atom. Addition of Ph2PC[triple bond, length as m-dash]CPPh2 to 1 gave the dimer [(η5-C9H7)Rh(μ-Ph2PC[triple bond, length as m-dash]CPPh2)]2 (5). Solution and solid state data showed that these new phosphine complexes have only a moderate amount of distortion within the indenyl ring. These compounds were found to catalyse the hydroboration of vinylarenes and the first example of an internal hydroboration of diphenylvinylphosphine has been reported.

Graphical abstract: Synthesis and structure of indenyl rhodium(I) complexes containing unsaturated phosphines: catalyst precursors for alkene hydroboration

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Article information

DOI
https://doi.org/10.1039/B812259H
Article type
Paper
Submitted
17 Jul 2008
Accepted
12 Nov 2008
First published
20 Jan 2009

Dalton Trans., 2009, 1624-1631

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Synthesis and structure of indenyl rhodium(I) complexes containing unsaturated phosphines: catalyst precursors for alkene hydroboration

C. N. Garon, D. I. McIsaac, C. M. Vogels, A. Decken, I. D. Williams, C. Kleeberg, T. B. Marder and S. A. Westcott, Dalton Trans., 2009, 1624 DOI: 10.1039/B812259H

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