Syntheses and Properties of Palladium Complexes Containing Phosphorus−Nitrogen−Phosphorus Ligands with a Tunable Hemilabile Site

A series of phosphorus−nitrogen−phosphorus (PNP) ligands of the type R−N(CH2CH2PPh2)2 (R = C(O)(C6H4OMe-p), t Bu, Ph, C6H4OMe-p) have been prepared. Their coordination chemistry to palladium(II) and palladium(0) complexes was examined using a combination of X-ray crystallography, NMR, and electroch...

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Bibliographic Details
Published in:Organometallics 1999-05, Vol.18 (10), p.1887-1896
Main Authors: Hii, King Kuok (Mimi), Thornton-Pett, Mark, Jutand, Anny, Tooze, Robert P
Format: Article
Language:English
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Summary:A series of phosphorus−nitrogen−phosphorus (PNP) ligands of the type R−N(CH2CH2PPh2)2 (R = C(O)(C6H4OMe-p), t Bu, Ph, C6H4OMe-p) have been prepared. Their coordination chemistry to palladium(II) and palladium(0) complexes was examined using a combination of X-ray crystallography, NMR, and electrochemical techniques. The palladium(0) complexes undergo reactions with aryl iodides to give the palladium(II) complexes [Pd(Ar){R−N(CH2CH2PPh2)2}]+I-, where the rate of oxidative addition was found to be dependent on the nature of the aryl group, as well as the substitution on nitrogen.
ISSN:0276-7333
1520-6041
DOI:10.1021/om980978t