149856-87-1Relevant articles and documents
Synthesis of Hexacarbonyldicobalt-complexed Thiacycloalkynes
Gelling, Andrew,Mohmand, G. Farouq,Jeffery, John C.,Went, Michael J.
, p. 1857 - 1862 (2007/10/02)
Reaction of 1R2CCR1R2OH)(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.