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Competition between Carbene and Pseudo η3-Allyl Bonding Modes in a Palladium (II) Complex of a Functionalized Bis(imidazolium) Ligand

Citation

Nielsen, DJ and Cavell, KJ and Skelton, BW and White, AH, Competition between Carbene and Pseudo η3-Allyl Bonding Modes in a Palladium (II) Complex of a Functionalized Bis(imidazolium) Ligand, Organometallics, 20, (5) pp. 995-1000. ISSN 0276-7333 (2001) [Refereed Article]

DOI: doi:10.1021/om000905l

Abstract

The reaction of the functionalized bis(imidazolium) salt 1,3-bis(1-methylimidazolium-3-yl)propan-2-one diiodide with palladium(II) acetate gave as the sole product the unexpected complex cis-I 2Pd[(CHR) 2C(O)] (R = 1-methylimidazolium-3-yl). Single-crystal X-ray crystallography and infrared spectroscopy revealed a highly puckered palladacyclobutan-3-one ring with an η 3-allylic (η 3-oxodimethylenemethane) bonding disposition of Pd(II) to the [C-C(O)-C] 2- fragment. No imidazolin-2-ylidene formation was evident. The neutral complex may be viewed as zwitterionic, with the negatively charged ligands at the Pd(II) center balanced by the positive charges on the pendant imidazolium groups.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Other Chemical Sciences
Research Field:Organometallic Chemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Nielsen, DJ (Mr David Nielsen)
Author:Cavell, KJ (Professor Kingsley Cavell)
ID Code:22470
Year Published:2001
Web of Science® Times Cited:30
Deposited By:Chemistry
Deposited On:2001-08-01
Last Modified:2011-08-03
Downloads:0

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