Synthesis of Hexacarbonyldicobalt-complexed Thiacycloalkynes

DOI: 10.1039/DT9930001857

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1857 - 1862 (1993)

Update date:2022-08-02

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Authors:

Gelling, Andrew

Mohmand, G. Farouq

Jeffery, John C.

Went, Michael J.

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Article abstract of DOI:10.1039/DT9930001857

Reaction of 1R²C<*>CR¹R²OH)(CO)6> (R¹ = R² = 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 predominantely 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 CCH2OH)(CO)6> with HSCH2CH(OH)CH2SH affords complexed thiacycloalkynes with pendant hydroxyl functionalities.The monomeric complexes undergo carbonyl substitution with bis(diphenylphosphino)me thane (dppm) and the X-ray crystal structure of 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, (1)H and (13)C NMR spectra of the new compounds are discussed.

Full text of DOI:10.1039/DT9930001857

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