Metal perfluoro-alkane- and -arene-thiolates. Part IV. The reactions of some manganese, iron, and cobalt derivatives with alkynes

Abstract

The products of reactions between the thiolates [{Mn(CO)₄(SR)}₂], [(cp)Fe(CO)₂(SR)], [{Fe(CO)₃(SR)}₂], [{(cp)Co(SCF₃)}₂], [(cp)Co(CO)(SC₆F₅)₂], and [{Co(CO)₃(SC₆F₅)}₂](R = CF₃ or C₆F₅) and the alkynes C(CF₃)⋮C(CF₃) and C(CF₃)⋮CH are described. The products include metallothiacyclobutenes [Mn(CO)₄{(alkyne)SR}] and [(cp)Fe(CO){(alkyne)SR}], metallated vinyls [(cp)Fe(CO)₂{(alkyne)SR}], dimetallated olefins [{Fe(CO)₃(SR)}₂(alkyne)], η⁴-C₄S complexes [Mn(CO)₃{(alkyne)₂SR}] and [(cp)Fe{(alkyne)₂SR}], the η⁴ benzene complex [(cp)CO{(alkyne)₃}], and the ‘flyover’ complex [Co₂(CO)₄{(alkyne)₂S}](cp =η-cyclo-pentadienyl).