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Palladium(II) agostic complex : exchange of Aryl–Pd and Alkyl–Pd bonds

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Thomas, Helen R., Deeth, Robert J., Clarkson, Guy J. and Rourke, Jonathan (2011) Palladium(II) agostic complex : exchange of Aryl–Pd and Alkyl–Pd bonds. Organometallics, Vol.30 (No.21). pp. 5641-5648. doi:10.1021/om200451v

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Official URL: http://dx.doi.org/10.1021/om200451v

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Abstract

Cyclopalladation of 2-tbutyl-6-(4-fluorophenyl)pyridine with palladium acetate cleanly gives cyclometalated complex 3 with an aryl–Pd bond. Replacement of the acetates by chloride gives the monomeric species 4 with a crystal structure confirming the presence of an agostic interaction from the alkyl group. Reaction of 3 with Na(acac) initially gives the monomeric acac complex 5 which maintains the aryl–Pd bond. Complex 5 shows fluxional behavior of the acac group, and this provides a pathway for its isomerization to complex 6 which has an alkyl–Pd bond; complex 6 was characterized crystallographically. Reaction of agostic 4 with triphenylphosphine gives an initial complex that maintains the aryl–Pd bond, but this complex isomerizes to crystallographically characterized 8 which has an alkyl–Pd bond.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Chemistry
Library of Congress Subject Headings (LCSH): Palladium, Transition metal complexes, Organometallic chemistry, Activation (Chemistry), Organic compounds -- Synthesis
Journal or Publication Title: Organometallics
Publisher: American Chemical Society
ISSN: 0276-7333
Official Date: 2011
Dates:
DateEvent
2011Published
Volume: Vol.30
Number: No.21
Page Range: pp. 5641-5648
DOI: 10.1021/om200451v
Status: Peer Reviewed
Publication Status: Published

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