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- W2015508422 abstract "The preparation and propeties are reported of π-methallylpalladium acetate L (L = triphenylphosphine and triphenylarsine). The temperature-dependent NMR spectrum of the adduct of triphenylphosphine shows that the protons cis to the phosphine in the π-methallyl group easily isomerize whereas the other two protons do not exchange in the NMR time-scale below 50°. The process is monomolecular and is assumed to proceed via the well-known π-σ rearrangement. The relative ease of the rearrangement gives some insight into the nature of π-σ reactions in general. At higher temperatures a left-right interchange occurs in the phosphie complex, which is the only reaction observed in the arsine adduct. It is shown that anion exchange does not necessarily lead to left-right interchange of the square-planar complex. It is observed that even before changes in tha allyl group occur, anion exchange, in NMR terms, can be extremely fast. Several examples are given of anion exchange in PdII with retention of configuration." @default.
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- W2015508422 title "NMR studies of π-methallypalladium compounds" @default.
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- W2015508422 doi "https://doi.org/10.1016/s0022-328x(00)83652-9" @default.
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