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. The mono-phosphoramidite chloro-allyl complexes of Pd(II) exist in two isomeric forms in solution. 1H,1H NMR exchange spectroscopy reveals that the dinuclear species [Pd(μ-Cl)(η3-CH2C(Me)CH2)] 2 is involved in the interconversion between the two isomers. There is evidence to suggest that phosphoramidite dissociation is not responsible for this exchange. The cationic η3-2-methallyl bis-phosphoramidite Pd complexes reveal nonequivalent 31P resonances, as a consequence of slow allyl dynamics and in agreement with the preliminary X-ray structure.

Palladium-Allyl Phosphoramidite Complexes: Solid-State Structures and Solution Dynamics / S. Filipuzzi, P.S. Pregosin, A. Albinati, S. Rizzato. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 25:25(2006), pp. 5955-5964. [10.1021/om060726p]

Palladium-Allyl Phosphoramidite Complexes: Solid-State Structures and Solution Dynamics

A. Albinati
Penultimo
;
S. Rizzato
Ultimo
2006

Abstract

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. The mono-phosphoramidite chloro-allyl complexes of Pd(II) exist in two isomeric forms in solution. 1H,1H NMR exchange spectroscopy reveals that the dinuclear species [Pd(μ-Cl)(η3-CH2C(Me)CH2)] 2 is involved in the interconversion between the two isomers. There is evidence to suggest that phosphoramidite dissociation is not responsible for this exchange. The cationic η3-2-methallyl bis-phosphoramidite Pd complexes reveal nonequivalent 31P resonances, as a consequence of slow allyl dynamics and in agreement with the preliminary X-ray structure.
Settore CHIM/03 - Chimica Generale e Inorganica
2006
http://pubs.acs.org/cgi-bin/article.cgi/orgnd7/2006/25/i25/html/om060726p.html/QueryZIP/C3-I/((((filipuzzi)%3CIN%3E(au,aul)))%3CAND%3E(PUBYR@@%3E=@@1879))%3COR%3E((((filipuzzi)%3CIN%3E(au,aul)))%3CAND%3E(ASAP@@%3CIN%3E@@VOL))
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/28723
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