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Abstract
A series of alkynyl-tricobalt carbonyl clusters, Co₃(μ₃-CnR)(μ-dppm)(CO)₇ [R = But, Ph, C₆H₄I, C₆H₄C≡CPh, SiMe₃, Fc, Au(PPh₃)] containing three, five or seven carbons in the chain, have been prepared by elimination of phosphine–gold(I) halides in reactions between Co₃(μ₃-CBr)(μ-dppm)(CO)₇ and Au(C≡CR)(PPh₃) or between Co₃{μ₃-CC≡CAu(PR₃)} (μ-dppm)(CO)₇ (R = Ph, tol) and IC≡CR′ (R′ = SiMe₃, Fc). The use of poly-substituted arenes or ferrocenes has enabled preparation of the complexes 1,4-{(OC)₇(μ-dppm)Co₃ (μ₃-CC≡C)}₂C₆H₃X-5 (X = H, Br), 1,3,5-{(OC)₇(μ-dppm)Co₃(μ₃-CC≡C)}₃C₆H₃ and 1,1′-{(OC)₇(μ-dppm)Co₃ (μ₃-CC≡C)}₂Fc′ [Fc′ = Fe(η-C₅H₄-)₂]. The X-ray determined molecular structures of 12 of the complexes are reported.
Type
Journal Article
Type of thesis
Series
Citation
Antonova, A.B., Bruce, M.I., Gaudio, M. Humphrey, P.A., Nicholson, B.K., Scoleri, N., Skelton, B.W., White A.H. & Zaitseva, N.N. (2006) Alkynyl and poly-ynyl derivatives of carbon-tricobalt clusters, Journal of Organometallic Chemistry, 691, 4694-4707.
Date
2006-04-01
Publisher
Elsevier S.A.
Degree
Supervisors
Rights
This is an authors version of an article published in the, Journal of Organometallic Chemistry, (c) 2006 Published by Elsevier Science B.V.