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Intramolecular Mobility of Phosphin-3η-allyl Palladium Chloride Complexes The diastereomers of the complexes cis- and trans-2.3-diphenyl-1.3-oxaphosphorinan-3η-allyl palladiumchloride interchange. The activation parameters of the diastereomerization are estimated by line-shape analysis of the 31P—NMR signals. The exchange of allyl protons is described by 16 permutations involved in three graphes of the proposed seven modes of intramolecular movement. The cross-peaks in the 2D-exchange-1H—NMR spectrum display the exchanging protons. The results suggest a π-σ-transition together with a trigonal-bipyramidal arrangement of ligands in the transition state.  相似文献   

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Analytical and Bioanalytical Chemistry -  相似文献   

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Ohne ZusammenfassungVergl. diese Zeitschrift45, 457;46, 69.  相似文献   

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