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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 ISSN 0276-7333.
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Official URL: http://dx.doi.org/10.1021/om200451v
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 | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > 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: |
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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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