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 originale | Anglais |
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Pages (de - à) | 5731-5734 |
Nombre de pages | 4 |
journal | Organometallics |
Volume | 26 |
Numéro de publication | 23 |
Les DOIs | |
Etat de la publication | Publié - 5 nov. 2007 |
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CCDC 678630: Experimental Crystal Structure Determination
Berthon-Gelloz, G. (Contributeur), Lucaccioni, F. (Contributeur), Marko, I. E. (Contributeur), Schumers, J. M. (Contributeur), Tinant, B. (Contributeur) & Wouters, J. (Contributeur), Cambridge Crystallographic Data Centre, 1 janv. 2008
DOI: 10.5517/ccqs59y, http://www.ccdc.cam.ac.uk/services/structure_request?id=doi:10.5517/ccqs59y&sid=DataCite
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