| Abstract
| - The isomeric mono-phosphoramidite chloro-allyl complexes of Pd(II) can exchange via a mechanism that involves the dinuclear species [Pd(μ-Cl)(η3-CH2C(Me)CH2)]2 as a reagent and not just a trap for free phosphoramidite.
- Several mono-phosphoramidite and bis-phosphoramidite 2-methallyl and 1,3-diphenylallyl allyl complexes of Pd(II) have been prepared. The solid-state structure for one of these has been determined. Themono-phosphoramidite chloro-allyl complexes of Pd(II) exist in two isomeric forms in solution. 1H,1HNMR exchange spectroscopy reveals that the dinuclear species [Pd(μ-Cl)(η3-CH2C(Me)CH2)]2 is involvedin the interconversion between the two isomers. There is evidence to suggest that phosphoramiditedissociation is not responsible for this exchange. The cationic η3-2-methallyl bis-phosphoramidite Pdcomplexes reveal nonequivalent31P resonances, as a consequence of slow allyl dynamics and in agreementwith the preliminary X-ray structure.
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