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Ferrocene and Related Iron Complexes: Synthesis, Reactivity and Applications

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Inorganic Chemistry".

Deadline for manuscript submissions: closed (30 April 2024) | Viewed by 550

Special Issue Editor


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Guest Editor
Department of Chemistry and Biochemistry, University of Missouri-St. Louis, St Louis, MO, USA
Interests: organometallic chemistry; iron complexes; catalysts; ligands

Special Issue Information

Dear Colleagues,

Since the discovery of ferrocene’s structure in 1952, the sandwich complexes of iron have intrigued generations of researchers. Over the years, research activities have intensified in the areas of the synthesis of ferrocene derivatives, their structural characterization, their reactivity, redox and electrochemistry, their applications in organic and organometallic synthesis and their use in the wide field of material sciences. Ferrocene and ferrocenium derivatives have been employed as catalysts or reagents (e.g., as oxidants or Lewis acids) in organic transformations. The redox chemistry of ferrocene and its derivatives not only allows for their employment as an electrochemical standard, but also for the investigation of stoichiometric or catalytic electron transfer and electrochemistry. Ferrocene derivatives have been investigated with respect to their cytotoxic activities in bioorganometallic applications. Phosphorus- or heteroatom-substituted ferrocene derivatives can serve as ligands in transition-metal-catalyzed organic reactions. Iron is an abundant and relatively non-toxic base metal, and ferrocene can be easily derivatized, which makes it a good candidate for a variety of applications. This Special Issue aims to compile research on all different aspects of ferrocene chemistry, the synthesis and characterization of their derivatives, their reactivity and electrochemistry and their various applications along the lines described above.

Prof. Dr. Eike Bauer
Guest Editor

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Published Papers (1 paper)

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Research

21 pages, 2967 KiB  
Article
Cleavage of [Pd2(PP)2(μ-Cl)2][BArF24]2 (PP = Bis(phosphino)ferrocene, BArF24 = Tetrakis(3,5-bis(trifluoromethyl)phenyl)borate) with Monodentate Phosphines
by Ian S. Leiby, Virginia Parparcén, Natalya Ding, Klara J. Kunz, Sadie A. Wolfarth, Jeremiah E. Stevens and Chip Nataro
Molecules 2024, 29(9), 2047; https://doi.org/10.3390/molecules29092047 - 29 Apr 2024
Viewed by 319
Abstract
The addition of Na[BArF24] (BArF24 = tetrakis(3,5-bis(trifluoromethyl)phenyl)borate) to [Pd(PP)Cl2] (PP = 1,1′-bis(phosphino)ferrocene ligands) compounds results in the loss of a chloride ligand and the formation of the dimeric species [Pd2(PP)2(μ-Cl)2][BArF [...] Read more.
The addition of Na[BArF24] (BArF24 = tetrakis(3,5-bis(trifluoromethyl)phenyl)borate) to [Pd(PP)Cl2] (PP = 1,1′-bis(phosphino)ferrocene ligands) compounds results in the loss of a chloride ligand and the formation of the dimeric species [Pd2(PP)2(μ-Cl)2][BArF24]2. In most cases, the addition of a monodentate phosphine, PR3, to these dimeric species leads to cleaving of the dimer and formation of [Pd(PP)(PR3)Cl][BArF24]. While these reactions are readily observed via a significant color change, the 31P{1H} NMR spectra offer more significant support, as the singlet for the dimer is replaced with three doublets of doublets. The reaction seems to take place for a wide range of PR3 ligands, although there do appear to be steric limitations to the reaction. The compounds were thoroughly characterized by NMR, and X-ray crystal structures of several of the compounds were obtained. In addition, the ferrocenyl backbone of the 1,1′-bis(phosphino)ferrocene ligands provides an opportunity to examine the oxidative electrochemistry of these compounds. In general, the potential at which oxidations of these compounds occurs shows a dependence on the phosphine substituents. Full article
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