Expedient, direct synthesis of (L)Pt(0)(1,6-diene) complexes from H 2PtCl6

Guillaume Berthon-Gelloz, Jean Marc Schumers, Fabio Lucaccioni, Bernard Tinant, Johan Wouters, István E. Markó

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

The one-pot synthesis of useful [Pt2(0)(η4-1,6- diene)3] complexes, directly from H2PtCl 6·xH2O, has remained an unaddressed problem. We have found that the treatment of an i-PrOH solution of H2PtCl 6-XH2O by (Me3SiO)2MeSi(CH=CH 2), in the presence of allyl ether (AE), followed by reaction of the in situ generated Pt(O) species with IPr carbene (IPr =1,3-bis(2,6- diisopropylphenyl)imidazol-2-ylidene) enables the isolation of (IPr)Pt(AE) (I) in 50-70% yield. The scope of this method has been extended to other (L)Pt(1,6-diene) complexes (L = 1,3-dicyclohexylimidazol-2-ylidene, triphenylphoshine; 1,6-diene = diethyl 2,2-diallylmalonate (DAM)), and the molecular structure of the (IPr)Pt(DAM) (4) complex has been unequivocally determined by a single-crystal X-ray diffraction analysis. These results are significant for the formation of active L-Pt(O) fragments in catalysis.

langue originaleAnglais
Pages (de - à)5731-5734
Nombre de pages4
journalOrganometallics
Volume26
Numéro de publication23
Les DOIs
Etat de la publicationPublié - 5 nov. 2007

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