Zincocenes as Mild Cyclopentadienyl Transfer Reagents toward Rhodium(I) Olefin Precursors. Facile Synthesis of (η5-Cp′)Rh(olefin)2Compounds

descriptionPublicationkeyboard_double_arrow_right Article 16 Dec 2008 Spain English Publisher:American Chemical Society (ACS)Journal:Organometallics, volume 28, pages 45-47 (issn: 0276-7333, eissn: 1520-6041,

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Authors: Esqueda Oliva, Ana Cristina; Conejero, Salvador; Maya, Celia; Carmona, Ernesto;

doi: 10.1021/om801046d

handle: 10261/37700

Zincocenes as Mild Cyclopentadienyl Transfer Reagents toward Rhodium(I) Olefin Precursors. Facile Synthesis of (η5-Cp′)Rh(olefin)2Compounds

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Abstract

The Rh(I) cyclopentadienyl olefin compounds [(η5-C5Me4R)Rh(olefin)2] (R = CMe3, SiMe3, SiMe2CMe3; olefin = C2H4, C2H3SiMe3) are readily prepared from the corresponding [RhCl(olefin)2]2 and zincocene, [Zn(C5Me4R)2], precursors. The new compounds undergo hydrogen/deuterium exchange at the olefinic sites in deuterated benzene, at a rate dependent on the cyclopentadienyl substituents.

Financial support from the Spanish Ministerio de Educación y Ciencia (MEC) (Project No. CTQ2007-62814) and Consolider-Ingenio 2010 (No. CSD2007-00006) (FEDER support), the Junta de Andalucía (Project Nos. FQM-3151 and FQM-672) is gratefully acknowledged. A.C.E. thanks the CONACYT for a research grant (Ref. No. 229340).

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Spain

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Keywords

Benzene, Rhodium, Olefin, Cyclopentadienyl complexes, Zincocene, Organometallic

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