Chiral Ag(i) and Pt(ii) complexes of ditopic NHC ligands: synthesis, structural and spectroscopic properties
Chiral Ag(i) and Pt(ii) complexes of ditopic NHC ligands: synthesis, structural and spectroscopic properties
The butyl and isopropyl derivatives (4I, 5Br) of chiral pool derived bis-imidazolium dehydrohexitol salts have been prepared. The ditopic N-heterocyclic carbenes 4 and 5 form dinuclear Ag(I) and Pt(II) complexes. All compounds were fully characterised by multinuclear NMR spectroscopy. The bis-imidazolium salt 4I and platinum complexes cis-[Pt-2(mu-2)(dmso)(2)Cl-4] and cis-[Pt-2(mu-4)(dmso)(2)Cl-4] were characterised by X-ray crystallography. In the case of the Pt(II) complexes, the carbene ring is positioned in a sterically preferred orientation, approximately perpendicular to the platinum coordination plane. The H-1, C-13, N-15 and Pt-195 NMR spectra of the platinum complexes show the presence of rotamers due to hindered rotation about the carbene-metal bond.
12839-12846
Marshall, Paul
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Jenkins, Robert L.
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Clegg, William
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Harrington, Ross W.
01d1f0bc-fc3e-43ae-a087-6cce0278128e
Callear, Samantha K.
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Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Fallis, Ian A.
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Dervisi, Athanasia
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2012
Marshall, Paul
864b012f-09b6-49cf-a442-dde2ea28a2d7
Jenkins, Robert L.
7c9a06ba-1439-40e2-a412-7f22697d8280
Clegg, William
5b1994af-8799-4402-9c01-8479959de00b
Harrington, Ross W.
01d1f0bc-fc3e-43ae-a087-6cce0278128e
Callear, Samantha K.
5af7f651-0ff0-4163-80b3-34996d62022a
Coles, Simon J.
3116f58b-c30c-48cf-bdd5-397d1c1fecf8
Fallis, Ian A.
6f14a47a-a4f7-405d-94eb-33fe818a21c5
Dervisi, Athanasia
967db740-d11c-43a5-af7d-75a9eb5ad162
Marshall, Paul, Jenkins, Robert L., Clegg, William, Harrington, Ross W., Callear, Samantha K., Coles, Simon J., Fallis, Ian A. and Dervisi, Athanasia
(2012)
Chiral Ag(i) and Pt(ii) complexes of ditopic NHC ligands: synthesis, structural and spectroscopic properties.
Dalton Transactions, (41), .
(doi:10.1039/c2dt31740k).
Abstract
The butyl and isopropyl derivatives (4I, 5Br) of chiral pool derived bis-imidazolium dehydrohexitol salts have been prepared. The ditopic N-heterocyclic carbenes 4 and 5 form dinuclear Ag(I) and Pt(II) complexes. All compounds were fully characterised by multinuclear NMR spectroscopy. The bis-imidazolium salt 4I and platinum complexes cis-[Pt-2(mu-2)(dmso)(2)Cl-4] and cis-[Pt-2(mu-4)(dmso)(2)Cl-4] were characterised by X-ray crystallography. In the case of the Pt(II) complexes, the carbene ring is positioned in a sterically preferred orientation, approximately perpendicular to the platinum coordination plane. The H-1, C-13, N-15 and Pt-195 NMR spectra of the platinum complexes show the presence of rotamers due to hindered rotation about the carbene-metal bond.
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Published date: 2012
Organisations:
Organic Chemistry: Synthesis, Catalysis and Flow
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Local EPrints ID: 345985
URI: http://eprints.soton.ac.uk/id/eprint/345985
ISSN: 0300-9246
PURE UUID: 30100f0b-cd85-458a-a33e-87bb97504493
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Date deposited: 11 Dec 2012 10:03
Last modified: 15 Mar 2024 03:01
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Contributors
Author:
Paul Marshall
Author:
Robert L. Jenkins
Author:
William Clegg
Author:
Ross W. Harrington
Author:
Samantha K. Callear
Author:
Ian A. Fallis
Author:
Athanasia Dervisi
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