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Synthesis, crystal structure, and NMR investigation of methyl α,α-dimethyl acetate-substituted π-allylpalladium complexes

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Rust,  Jörg
Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Lehmann,  Christian W.
Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Schwarz, I., Rust, J., Lehmann, C. W., & Braun, M. (2000). Synthesis, crystal structure, and NMR investigation of methyl α,α-dimethyl acetate-substituted π-allylpalladium complexes. Journal of Organometallic Chemistry, 605(1), 109-116. doi:10.1016/S0022-328X(00)00276-X.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-5CDF-0
Abstract
The dimeric, trifluoroacetate-bridged π-allylpalladium complex 6 and the cationic allyl complex 8 were prepared and characterized by NMR spectroscopy as well as crystal structure analyses. The carbonyl group of the carboxylic ester moiety does not form a chelate with the metal atom. The activation enthalpy of a π–σ–π conversion could be determined to be 14.6 kcal mol−1 based on the dynamic NMR spectroscopy of the allylpalladium complex 8.