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CO Cleavage Promoted by Acetylide Addition to Vinyliminium Diiron Complexes
Author(s) -
Busetto Luigi,
Marchetti Fabio,
Zacchini Stefano,
Zanotti Valerio
Publication year - 2006
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200500927
Subject(s) - chemistry , acetylide , cleavage (geology) , stereochemistry , ligand (biochemistry) , bond cleavage , medicinal chemistry , x ray crystallography , catalysis , diffraction , organic chemistry , biochemistry , physics , receptor , geotechnical engineering , optics , fracture (geology) , engineering
The vinyliminium complex [Fe 2 {μ‐η 1 :η 3 ‐C(Me)=C(Me)C=N(Me)(Xyl)}(μ‐CO)(CO)(Cp) 2 ][SO 3 CF 3 ] ( 1 ; Xyl = 2,6‐Me 2 C 6 H 3 ) reacts with LiC≡CR [R = C 6 H 4 Me = Tol, Ph, H, n Bu, SiMe 3 , C(Me)=CH 2 ] affording the amido‐functionalized allylidene complexes [Fe 2 {μ‐κ 1 (O):η 1 (C):η 3 (C)‐C(C≡CR)C(Me)C(Me)C(O)N(Me)(Xyl)}(μ‐CO)(Cp) 2 ] [R = C 6 H 4 Me = Tol, 2 ; R = Ph, 3 ; R = H, 4 ; R = n Bu, 5 ; R = SiMe 3 , 6 ; R = C(Me)=CH 2 , 7 ] in good yields. Labelling experiments with 13 CO‐enriched 1 indicate that formation of 2 – 7 occurs through cleavage of the carbon–oxygen bond of a coordinated CO ligand. The molecular structure of 2 has been determined by an X‐ray diffraction study. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)