Synthesis of Hexacarbonyldicobalt-Complexed Thiacycloalkynes

Gelling, A. and Mohmand, G.F. and Jeffery, John C. and Went, Michael J. (1993) Synthesis of Hexacarbonyldicobalt-Complexed Thiacycloalkynes. Journal of the Chemical Society-Dalton Transactions (12). pp. 1857-1862. ISSN 0300-9246. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Reaction of [Co2(mu-HOCR1R2C=CCR1R2OH)(CO)6] (R1 = R 2 = H or Me; R1 = H, R2 = Me) with HS(CH2)nSH (n = 2-5) or HS(CH2)2OH in the presence of HBF4.OEt2 affords predominately monomeric hexacarbonyldicobalt-complexed thiacycloalkynes. In many cases, especially with the longer chain dithiols, dimeric compounds are also formed as minor products and in some cases higher oligomers have also been characterised. Reaction of [CO2(mu-HOCH2C=CCH2OH)(CO)6] with HSCH2CH(OH)CH2SH affords complexed thiacycloalkynes with pendant hydroxyl functionalities. The monomeric complexes undergo carbonyl substitution with bis(diphenylphosphino)methane (dppm) and the X-ray crystal Structure of [Co2(mu-CCH2SCH2CH2SCH2C)(mu-dppm)(CO)4] has been determined. The molecule contains a co-ordinated 1,4-dithiacyclooct-6-yne which adopts two conformations in the solid state. The IR, mass, H-1 and C-13 NMR spectra of the new compounds are discussed.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences
Depositing User: M. Nasiriavanaki
Date Deposited: 02 Aug 2009 19:42
Last Modified: 10 Jul 2014 14:46
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