93602-99-4Relevant articles and documents
A general route to novel dinuclear iron carbonyl complexes containing alkanethiolate and bridging organic ligands
Seyferth, Dietmar,Womack, Gary B.,Dewan, John C.
, p. 398 - 400 (1985)
The reaction of Fe3(CO)12 with mercaptans (RSH, R = Et, Me3C) in the presence of stoichiometric Et3N in THF gives the reactive salt [Et3NH+][(μ-RS)(μ-CO)Fe2(CO) 6-]. Reactions of the latter with benzoyl and acetyl chloride, diphenylchlorophosphine, allyl chloride, and propargylic halides have been studied. New bridging ligands (μ-RC=O, μ-Ph2P, μ-C3H6, μ-η1, η2-allenyl) were introduced between the iron atoms in all of these reactions. X-ray crystal structures of (μ-EtS)(μ-C3H6)Fe2(CO)6 and (μ-Me3CS)(μ-η1,η2-CH=C=CH 2)Fe(CO)6 were determined.
A simple route to hexacarbonyldiiron complexes containing a bridging thiolate and an organic bridging ligand by means of [(μ-RS)(μ-CO)Fe2(CO)6]- intermediates
Seyferth, Dietmar,Womack, Gary B.,Archer, Colin M.,Dewan, John C.
, p. 430 - 442 (2008/10/08)
The reaction of thiolate salts, M+SR-, with Fe3(CO)12 in THF at room temperature gives M[(μ-CO)-(μ-RS)Fe2(CO)6]. These react as nucleophiles at the oxygen of the bridging CO ligand (with Et3O+BF4-) and as nucleophiles at iron (with halides of potentially bridging groups: RC(O)Cl, Me2NC(S)Cl, allyl chloride, propargylic halides) to give products of type (μ-RS)(μ-organic group)Fe2(CO)6 in good yield. A less practical route to such products involves the action of 2 molar equiv of LiBEt3H on (μ-CH3CO)(μ-RS)Fe2(CO)6, followed by addition of the halide electrophile. The reaction of the [(μ-CO)(μ-RS)Fe2(CO)6]- anions with propargylic halides was shown to proceed by wav of an SN2′ mechanism. The structures of [Et3NH](μ-CO)(μ-mesitylS)Fe(CO)6], (μ-allyl)(μ-C2H5S)Fe2(CO)6, and (μ-allenyl)(μ-(CH3)3CS)Fe2(CO) 6 were determined by X-ray diffraction.
