Ligand exchange processes in some iron-sulphur-carbonyl and -nitrosyl complexes

Anthony R. Butler, Christopher Glidewel, Andrew R. Hyde, Joseph McGinnis, Julie E. Seymour

    Research output: Contribution to journalArticlepeer-review

    32 Citations (Scopus)

    Abstract

    The complex [Fe2(SMe)2(CO)6] undergoes stepwise exchange with Et2S2 to yield successively [Fe2(SMe)(SEt)(CO)6] and [Fe2(SEt)2(CO)6]. Carbonyl complexes [Fe2(SR)2(CO)6] are efficiently converted to the nitrosyls [Fe2(SR)2(NO)4] by the action either of NO gas or of methanolic sodium nitrite: the analogous species [Fe2S2(CO)6], [Fe2S2(CO)6]2-, and [Fe3S2(CO)9] all, with methanolic nitrite, yield [Fe4S3(NO)7]-. This anion, [Fe4S3(NO)7]-, reacts with sulphur to give the cubane-like [Fe4S4(NO)4]: the synthesis of its selenium analogue, [Fe4Se3(NO)7]- is described. The complexes [Fe2(SR)2(NO)4] (R = Me, Et, Prn, Pri, But, PhCH2) all consist of two isomers in solution, presumed to have structures of C2h and C2v, symmetry: activation parameters for the C2h⇌C2v reaction are reported.

    Original languageEnglish
    Pages (from-to)1045-1052
    Number of pages8
    JournalPolyhedron
    Volume2
    Issue number10
    DOIs
    Publication statusPublished - 1 Jan 1983

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