Conversion of CC to CO in alkynyl-metal complexes: oxidation of carbon chains capped by carbon-tricobalt clusters

Michael I. Bruce; Paul A. Humphrey; Natasha N. Zaitseva; Brian K. Nicholson; Brian W. Skelton; Allan H. White

doi:10.1039/C002997C

Conversion of CC to CO in alkynyl-metal complexes: oxidation of carbon chains capped by carbon-tricobalt clusters

Michael I. Bruce,*^a Paul A. Humphrey,^a Natasha N. Zaitseva,^a Brian K. Nicholson,^b Brian W. Skelton^c and Allan H. White^c

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* Corresponding authors

^a School of Chemistry & Physics, University of Adelaide, South Australia
E-mail: michael.bruce@adelaide.edu.au
Fax: + 61 8 8303 4358

^b Department of Chemistry, University of Waikato, New Zealand

^c Chemistry, SBBSC, University of Western Australia, Western Australia

Abstract

Treatment of Co₃(μ₃-CC [triple bond, length as m-dash] CR)(μ-dppm)(CO)₇ with O₂ (air) in the presence of [FcH]PF₆ afforded Co₃{μ₃-CC(O)R}(μ-dppm)(CO)₇ by the formal conversion –CC– + O–O → >C–O + CO. In this way, complexes with R = Ph, Fc, and W(CO)₃Cp, bis-clusters {Co₃(μ-dppm)(CO)₇}₂{μ₃:μ₃-[ [triple bond, length as m-dash] C(O)(CC)C]}, {Co₃(μ-dppm)(CO)₇}₂{μ₃:μ₃-[C(O)(CC)_xC(O)C]} (x = 1, 2), and {Co₃(μ-dppm)(CO)₇}₂{μ₃:μ₃-[CC(O)CCC₆H₄CCC(O)C]}, and heterometallic bis-clusters {Co₃(μ-dppm)(CO)₇}{μ₃:μ₃-[CC(O)CCC]}{M₃(μ-H)₃(CO)₉} (M = Ru, Os) have been prepared. Single-crystal XRD structure determinations of several products are reported together with that of precursor {Co₃(μ-dppm)(CO)₇}₂{μ₃:μ₃-[ [triple bond, length as m-dash] C(CC)₂C₆H₄(CC)₂C]}.

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Publication details

The article was received on 11 Feb 2010, accepted on 11 Jun 2010 and first published on 12 Aug 2010

Article type: Paper

DOI: 10.1039/C002997C

Citation: Dalton Trans., 2010,39, 8801-8811

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Conversion of CC to CO in alkynyl-metal complexes: oxidation of carbon chains capped by carbon-tricobalt clusters

M. I. Bruce, P. A. Humphrey, N. N. Zaitseva, B. K. Nicholson, B. W. Skelton and A. H. White, Dalton Trans., 2010, 39, 8801
DOI: 10.1039/C002997C
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Conversion of CC to CO in alkynyl-metal complexes: oxidation of carbon chains capped by carbon-tricobalt clusters

Abstract

Supplementary files

Publication details

Conversion of CC to CO in alkynyl-metal complexes: oxidation of carbon chains capped by carbon-tricobalt clusters

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