Synthesis of ferrocenyldiimine metal carbonyl complexes and an investigation of the Mo adduct encapsulated in cyclodextrin
authors Petrovski, Z; Braga, SS; Rodrigues, SS; Pereira, CCL; Goncalves, IS; Pillinger, M; Freire, C; Ramao, CC
nationality International
journal NEW JOURNAL OF CHEMISTRY
keywords HALF-SANDWICH COMPLEXES; BETA-CYCLODEXTRIN; INCLUSION-COMPOUNDS; MOLECULAR ENCAPSULATION; GAMMA-CYCLODEXTRIN; HOST MOLECULES; NMR-SPECTRA; FERROCENE; COMPOUND; DERIVATIVES
abstract Cr and Mo tetracarbonyl complexes bearing the diimine ligand N, N'-bis(ferrocenylmethylene)ethylenediamine (FcNN) have been prepared from the ligand and M(CO)(6). Two isomeric forms of (FcNN)Mo(CO)(4), corresponding to the cis, cis and cis, trans geometries with respect to the C=N bonds of the free ligand, were shown to exist in a 1:12.5 ratio by H-1 NMR (NOE experiments). By contrast, only the trans, trans isomer is observed for the Cr complex (FcNN)Cr(CO)(4). The compounds (FcNN)M(CO)(4) show ferrocene-based irreversible oxidation processes that lead to the deposition of a film at the electrode surface. (FcNN)Mo(CO)(4) was immobilised in permethylated beta-CD (TRIMEB) by addition of the guest to a solution of TRIMEB in dichloromethane. Removal of the solvent led to the isolation of an inclusion compound with a 2 : 1 host : guest stoichiometry, as evidenced by powder X-ray diffraction, thermogravimetric analysis, FTIR and C-13 CP MAS NMR spectroscopy. The electrochemical properties of (FcNN)Mo(CO)(4) upon encapsulation are discussed.
publisher ROYAL SOC CHEMISTRY
issn 1144-0546
year published 2005
volume 29
issue 2
beginning page 347
ending page 354
digital object identifier (doi) 10.1039/b409961c
web of science category Chemistry, Multidisciplinary
subject category Chemistry
unique article identifier WOS:000226734300017
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journal impact factor 3.288
5 year journal impact factor 3.153
category normalized journal impact factor percentile 61.864
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