Toward an understanding of the mechanism of metal exchange in (propargyl alcohol) Co-2(CO)(6) clusters: Syntheses and structures of [eta(5)-C5Ph2R2-C C-TMS)(Fe(CO)(2)(mu-H)]Co-2(CO)(6), R = Ph or Et

Citation
Ja. Dunn et al., Toward an understanding of the mechanism of metal exchange in (propargyl alcohol) Co-2(CO)(6) clusters: Syntheses and structures of [eta(5)-C5Ph2R2-C C-TMS)(Fe(CO)(2)(mu-H)]Co-2(CO)(6), R = Ph or Et, ORGANOMETAL, 20(22), 2001, pp. 4690-4694
Citations number
35
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
0276-7333 → ACNP
Volume
20
Issue
22
Year of publication
2001
Pages
4690 - 4694
Database
ISI
SICI code
0276-7333(20011029)20:22<4690:TAUOTM>2.0.ZU;2-G
Abstract
The reaction of (5-alkynylcyclopentadienol)Co-2(CO)(6) clusters with iron p entacarbonyl in acetone does not yield the expected product in which the hy droxyl substituent is lost and a tricarbonylcobalt vertex is replaced by an Fe(CO)(3) group. Instead, the product contains an (eta (5)-C5Ph2R2)Fe(CO)( 2)H moiety that is bridged to one of the cobalt vertexes of the intact dico balt-alkyne cluster. The process is rationalized in terms of a decarboxylat ion rather than a dehydroxylation process, and the relevance to the mechani sm of substitution of one metal vertex by another is discussed.