The University of Southampton
University of Southampton Institutional Repository

New pyridyl modified phosphines: Synthesis and late transition-metal coordination studies

Durran, S.E., Smith, M.B., Dale, S.H., Coles, S.J., Hursthouse, M.B. and Light, M.E. (2006) New pyridyl modified phosphines: Synthesis and late transition-metal coordination studies Inorganica Chimica Acta, 359, (9), pp. 2980-2988. (doi:10.1016/j.ica.2005.12.068).

Record type: Article

Abstract

Using a phosphorus based Mannich condensation reaction the new pyridylphosphines {5-Ph2PCH2N(H)}C5H3(1-Cl) and {2-Ph2PCH2N(H)}C5H3(5-Br)N (1-Br) have been synthesised in good yields (60% and 88%, respectively) from Ph2PCH2OH and the appropriate aminopyridine. The ligands 1-Cl and 1-Br display variable coordination modes depending on the choice of late transition-metal complex used. Hence P-monodentate coordination has been observed for the mononuclear complexes AuCl(1-Cl) (2), AuCl(1-Br) (3), RuCl2(p-cymene)(1-Cl) (4), RuCl2(p-cymene)(1-Br) (5), RhCl2(Cp*)(1-Cl) (6), RhCl2(Cp*)(1-Br) (7), IrCl2(Cp*)(1-Cl) (8), IrCl2(Cp*)(1'-Cl) (8'), IrCl2(Cp*)(1-Br) (9), cis-/trans-PdCl2(1-Cl)(2) (10), cis-/trans-PdCl2(1-Br)(2) (11), cis-PtO2(1-Cl)(2) (12) and cis-PtCl2(1-Br)(2) (13). Reaction of Pd(Me)Cl(cod) (cod = cycloocta-1,5-diene) with either 1 equiv. of 1-Br or the known pyridylphosphines 1'-Cl, 1-OH or 1-H gave the P/N-chelate complexes Pd(Me)Cl(1-Br-1-H) (14)-(17). All new compounds have been fully characterised by spectroscopic and analytical methods. Furthermore the structures of 4, 5, 10 and 16 center dot (CH3)(2)SO have been elucidated by single crystal X-ray crystallography. A crystal structure of the dinuclear metallocycle trans, trans-[PdCl2{ mu-P/N-{Ph2PCH2N(H)} C5H4N}(2) center dot CHCl3, 18 center dot CHCl3, has also been determined. Here 1-H bridges, using both P and pyridyl N donors, two dichloropalladium centres affording a 12-membered ring with the PdCl2 units adopting a head-to-tail arrangement.

Full text not available from this repository.

More information

Published date: 2006
Keywords: phosphines, transition-metals, x-ray crystallography, multinuclear nmr, chelate complexes, bridging ligands py = 2-pyridyl, structural-characterization, catalytic oligomerization, palladium(ii) complexes, condensation-reactions, tertiary phosphines, crystal-structures, nickel-complexes, ligands, chemistry

Identifiers

Local EPrints ID: 44427
URI: http://eprints.soton.ac.uk/id/eprint/44427
ISSN: 0020-1693
PURE UUID: b416d2f6-a6d1-431c-ac20-9a116a301a51
ORCID for S.J. Coles: ORCID iD orcid.org/0000-0001-8414-9272
ORCID for M.E. Light: ORCID iD orcid.org/0000-0002-0585-0843

Catalogue record

Date deposited: 01 Mar 2007
Last modified: 17 Jul 2017 15:14

Export record

Altmetrics

Contributors

Author: S.E. Durran
Author: M.B. Smith
Author: S.H. Dale
Author: S.J. Coles ORCID iD
Author: M.B. Hursthouse
Author: M.E. Light ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×